Open-Meteo Seasonal Forecast APIs API

openapi: 3.0.3
info:
  title: Open-Meteo Air Quality Air Quality APIs Seasonal Forecast APIs API
  description: Hourly air quality forecasts for PM2.5, PM10, ozone, nitrogen dioxide, pollen, and other pollutants from the Copernicus Atmosphere Monitoring Service (CAMS).
  version: '1.0'
  contact:
    name: Open-Meteo
    url: https://open-meteo.com
    email: info@open-meteo.com
  license:
    name: Attribution 4.0 International (CC BY 4.0)
    url: https://creativecommons.org/licenses/by/4.0/
  termsOfService: https://open-meteo.com/en/features#terms
tags:
- name: Seasonal Forecast APIs
paths:
  /v1/seasonal:
    servers:
    - url: https://seasonal-api.open-meteo.com
    - url: https://customer-seasonal-api.open-meteo.com
    get:
      tags:
      - Seasonal Forecast APIs
      summary: Seasonal weather forecast up to 9 months
      description: Long-range seasonal forecasts from multiple ensemble models with 6-hourly and daily data.
      parameters:
      - name: latitude
        in: query
        required: true
        schema:
          type: string
      - name: longitude
        in: query
        required: true
        schema:
          type: string
      - name: hourly
        in: query
        description: A list of weather variables (6-hourly resolution).
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - temperature_2m
            - dew_point_2m
            - pressure_msl
            - sea_surface_temperature
            - snowfall_water_equivalent
            - precipitation
            - soil_temperature_0_to_7cm
            - cloud_cover
            - wind_speed_10m
            - wind_speed_100m
            - wind_speed_200m
            - wind_direction_10m
            - wind_direction_100m
            - wind_direction_200m
            - wind_gusts_10m
            - rain
            - showers
            - snowfall
            - relative_humidity_2m
            - apparent_temperature
            - et0_fao_evapotranspiration
            - vapour_pressure_deficit
            - weather_code
            - sunshine_duration
            - wave_height
            - wave_direction
            - wave_period
            - wave_peak_period
            - soil_temperature_7_to_28cm
            - soil_temperature_28_to_100cm
            - soil_temperature_100_to_255cm
            - soil_moisture_0_to_7cm
            - soil_moisture_7_to_28cm
            - soil_moisture_28_to_100cm
            - soil_moisture_100_to_255cm
            - shortwave_radiation
            - direct_radiation
            - diffuse_radiation
            - direct_normal_irradiance
            - global_tilted_irradiance
            - terrestrial_radiation
            - shortwave_radiation_instant
            - direct_radiation_instant
            - diffuse_radiation_instant
            - direct_normal_irradiance_instant
            - global_tilted_irradiance_instant
            - terrestrial_radiation_instant
      - name: daily
        in: query
        description: A list of daily weather variables.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - sunrise
            - sunset
            - weather_code
            - et0_fao_evapotranspiration
            - vapour_pressure_deficit_max
            - temperature_2m_max
            - temperature_2m_min
            - temperature_2m_mean
            - sunshine_duration
            - dew_point_2m_mean
            - pressure_msl_mean
            - sea_surface_temperature_mean
            - cloud_cover_mean
            - wind_speed_10m_mean
            - wind_speed_100m_mean
            - snow_depth_mean
            - soil_temperature_0_to_7cm_mean
      - name: weekly
        in: query
        description: A list of weekly weather variables.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - wind_speed_10m_mean
            - wind_speed_10m_anomaly
            - wind_speed_100m_mean
            - wind_speed_100m_anomaly
            - wind_direction_10m_mean
            - wind_direction_10m_anomaly
            - wind_direction_100m_mean
            - wind_direction_100m_anomaly
            - snow_depth_mean
            - snow_depth_anomaly
            - snowfall_mean
            - snowfall_anomaly
            - temperature_2m_anomaly_gt0
            - temperature_2m_anomaly_gt1
            - temperature_2m_anomaly_gt2
            - temperature_2m_anomaly_ltm1
            - temperature_2m_anomaly_ltm2
            - pressure_msl_anomaly_gt0
            - surface_temperature_anomaly_gt0
            - precipitation_anomaly_gt0
            - precipitation_anomaly_gt10
            - precipitation_anomaly_gt20
            - temperature_2m_sot10
            - temperature_2m_sot90
            - temperature_2m_efi
            - precipitation_efi
            - precipitation_sot90
            - showers_mean
            - snow_density_mean
            - snow_density_anomaly
            - snow_depth_water_equivalent_mean
            - snow_depth_water_equivalent_anomaly
            - total_column_integrated_water_vapour_mean
            - total_column_integrated_water_vapour_anomaly
            - temperature_2m_mean
            - temperature_2m_anomaly
            - dew_point_2m_mean
            - dew_point_2m_anomaly
            - pressure_msl_mean
            - pressure_msl_anomaly
            - sea_surface_temperature_mean
            - sea_surface_temperature_anomaly
            - wind_u_component_10m_mean
            - wind_u_component_10m_anomaly
            - wind_v_component_10m_mean
            - wind_v_component_10m_anomaly
            - wind_u_component_100m_mean
            - wind_u_component_100m_anomaly
            - wind_v_component_100m_mean
            - wind_v_component_100m_anomaly
            - snowfall_water_equivalent_mean
            - snowfall_water_equivalent_anomaly
            - precipitation_mean
            - precipitation_anomaly
            - cloud_cover_mean
            - cloud_cover_anomaly
            - sunshine_duration_mean
            - sunshine_duration_anomaly
            - soil_temperature_0_to_7cm_mean
            - soil_temperature_0_to_7cm_anomaly
            - temperature_max6h_2m_mean
            - temperature_max6h_2m_anomaly
            - temperature_min6h_2m_mean
            - temperature_min6h_2m_anomaly
      - name: monthly
        in: query
        description: A list of monthly weather variables.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - wind_gusts_10m_anomaly
            - wind_speed_10m_mean
            - wind_speed_10m_anomaly
            - albedo_mean
            - albedo_anomaly
            - cloud_cover_low_mean
            - cloud_cover_low_anomaly
            - showers_mean
            - showers_anomaly
            - runoff_mean
            - runoff_anomaly
            - snow_density_mean
            - snow_density_anomaly
            - snow_depth_water_equivalent_mean
            - snow_depth_water_equivalent_anomaly
            - total_column_integrated_water_vapour_mean
            - total_column_integrated_water_vapour_anomaly
            - temperature_2m_mean
            - temperature_2m_anomaly
            - dew_point_2m_mean
            - dew_point_2m_anomaly
            - pressure_msl_mean
            - pressure_msl_anomaly
            - sea_surface_temperature_mean
            - sea_surface_temperature_anomaly
            - wind_u_component_10m_mean
            - wind_u_component_10m_anomaly
            - wind_v_component_10m_mean
            - wind_v_component_10m_anomaly
            - snowfall_water_equivalent_mean
            - snowfall_water_equivalent_anomaly
            - precipitation_mean
            - precipitation_anomaly
            - shortwave_radiation_mean
            - shortwave_radiation_anomaly
            - longwave_radiation_mean
            - longwave_radiation_anomaly
            - cloud_cover_mean
            - cloud_cover_anomaly
            - sunshine_duration_mean
            - sunshine_duration_anomaly
            - soil_temperature_0_to_7cm_mean
            - soil_temperature_0_to_7cm_anomaly
            - soil_temperature_7_to_28cm_mean
            - soil_temperature_7_to_28cm_anomaly
            - soil_temperature_28_to_100cm_mean
            - soil_temperature_28_to_100cm_anomaly
            - soil_temperature_100_to_255cm_mean
            - soil_temperature_100_to_255cm_anomaly
            - soil_moisture_0_to_7cm_mean
            - soil_moisture_0_to_7cm_anomaly
            - soil_moisture_7_to_28cm_mean
            - soil_moisture_7_to_28cm_anomaly
            - soil_moisture_28_to_100cm_mean
            - soil_moisture_28_to_100cm_anomaly
            - soil_moisture_100_to_255cm_mean
            - soil_moisture_100_to_255cm_anomaly
            - temperature_max24h_2m_mean
            - temperature_max24h_2m_anomaly
            - temperature_min24h_2m_mean
            - temperature_min24h_2m_anomaly
            - sea_ice_cover_mean
            - sea_ice_cover_anomaly
            - latent_heat_flux_mean
            - latent_heat_flux_anomaly
            - sensible_heat_flux_mean
            - sensible_heat_flux_anomaly
            - evapotranspiration_mean
            - evapotranspiration_anomaly
            - snowfall_mean
            - snowfall_anomaly
            - snow_depth_mean
            - snow_depth_anomaly
      - name: temperature_unit
        in: query
        schema:
          type: string
          default: celsius
          enum:
          - celsius
          - fahrenheit
      - name: wind_speed_unit
        in: query
        schema:
          type: string
          default: kmh
          enum:
          - kmh
          - ms
          - mph
          - kn
      - name: precipitation_unit
        in: query
        schema:
          type: string
          default: mm
          enum:
          - mm
          - inch
      - name: timeformat
        in: query
        schema:
          type: string
          default: iso8601
          enum:
          - iso8601
          - unixtime
      - name: timezone
        in: query
        schema:
          type: string
      - name: past_days
        in: query
        schema:
          type: integer
          default: 0
          minimum: 0
          maximum: 92
      - name: forecast_days
        in: query
        description: Number of forecast days. Up to 217 days (7 months).
        schema:
          type: integer
          default: 183
          minimum: 0
          maximum: 217
      - name: start_date
        in: query
        description: Start date in ISO 8601 format.
        schema:
          type: string
          format: date
      - name: end_date
        in: query
        description: End date in ISO 8601 format.
        schema:
          type: string
          format: date
      - name: cell_selection
        in: query
        schema:
          type: string
          enum:
          - land
          - sea
          - nearest
      - name: models
        in: query
        description: Manually select one or more weather models.
        explode: false
        schema:
          type: array
          items:
            type: string
            enum:
            - best_match
            - ecmwf_seasonal_seamless
            - ecmwf_seas5
            - ecmwf_ec46
            - ecmwf_seasonal_ensemble_mean_seamless
            - ecmwf_seas5_ensemble_mean
            - ecmwf_ec46_ensemble_mean
      - name: apikey
        in: query
        description: Only required for commercial subscriptions.
        schema:
          type: string
      responses:
        '200':
          description: OK
          content:
            application/json:
              schema:
                type: object
                properties:
                  latitude:
                    type: number
                    format: float
                  longitude:
                    type: number
                    format: float
                  elevation:
                    type: number
                    format: float
                  generationtime_ms:
                    type: number
                    format: float
                  utc_offset_seconds:
                    type: integer
                  timezone:
                    type: string
                  timezone_abbreviation:
                    type: string
                  hourly:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                    additionalProperties:
                      type: array
                      items:
                        type: number
                        format: float
                  hourly_units:
                    type: object
                    properties:
                      time:
                        type: string
                    additionalProperties:
                      type: string
                  daily:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                    additionalProperties:
                      type: array
                      items:
                        type: number
                        format: float
                  daily_units:
                    type: object
                    properties:
                      time:
                        type: string
                    additionalProperties:
                      type: string
                  weekly:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                      wind_speed_10m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_speed_10m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_speed_100m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_speed_100m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_direction_10m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_direction_10m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_direction_100m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_direction_100m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_depth_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_depth_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      snowfall_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snowfall_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly_gt0:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly_gt1:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly_gt2:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly_ltm1:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly_ltm2:
                        type: array
                        items:
                          type: number
                          format: float
                      pressure_msl_anomaly_gt0:
                        type: array
                        items:
                          type: number
                          format: float
                      surface_temperature_anomaly_gt0:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_anomaly_gt0:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_anomaly_gt10:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_anomaly_gt20:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_sot10:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_sot90:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_efi:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_efi:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_sot90:
                        type: array
                        items:
                          type: number
                          format: float
                      showers_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_density_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_density_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_depth_water_equivalent_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snow_depth_water_equivalent_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      total_column_integrated_water_vapour_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      total_column_integrated_water_vapour_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_2m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      dew_point_2m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      dew_point_2m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      pressure_msl_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      pressure_msl_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      sea_surface_temperature_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      sea_surface_temperature_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_u_component_10m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_u_component_10m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_v_component_10m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_v_component_10m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_u_component_100m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_u_component_100m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_v_component_100m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_v_component_100m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      snowfall_water_equivalent_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      snowfall_water_equivalent_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      precipitation_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      cloud_cover_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      cloud_cover_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      sunshine_duration_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      sunshine_duration_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      soil_temperature_0_to_7cm_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      soil_temperature_0_to_7cm_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_max6h_2m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_max6h_2m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_min6h_2m_mean:
                        type: array
                        items:
                          type: number
                          format: float
                      temperature_min6h_2m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                  weekly_units:
                    type: object
                    properties:
                      time:
                        type: string
                      wind_speed_10m_mean:
                        type: string
                      wind_speed_10m_anomaly:
                        type: string
                      wind_speed_100m_mean:
                        type: string
                      wind_speed_100m_anomaly:
                        type: string
                      wind_direction_10m_mean:
                        type: string
                      wind_direction_10m_anomaly:
                        type: string
                      wind_direction_100m_mean:
                        type: string
                      wind_direction_100m_anomaly:
                        type: string
                      snow_depth_mean:
                        type: string
                      snow_depth_anomaly:
                        type: string
                      snowfall_mean:
                        type: string
                      snowfall_anomaly:
                        type: string
                      temperature_2m_anomaly_gt0:
                        type: string
                      temperature_2m_anomaly_gt1:
                        type: string
                      temperature_2m_anomaly_gt2:
                        type: string
                      temperature_2m_anomaly_ltm1:
                        type: string
                      temperature_2m_anomaly_ltm2:
                        type: string
                      pressure_msl_anomaly_gt0:
                        type: string
                      surface_temperature_anomaly_gt0:
                        type: string
                      precipitation_anomaly_gt0:
                        type: string
                      precipitation_anomaly_gt10:
                        type: string
                      precipitation_anomaly_gt20:
                        type: string
                      temperature_2m_sot10:
                        type: string
                      temperature_2m_sot90:
                        type: string
                      temperature_2m_efi:
                        type: string
                      precipitation_efi:
                        type: string
                      precipitation_sot90:
                        type: string
                      showers_mean:
                        type: string
                      snow_density_mean:
                        type: string
                      snow_density_anomaly:
                        type: string
                      snow_depth_water_equivalent_mean:
                        type: string
                      snow_depth_water_equivalent_anomaly:
                        type: string
                      total_column_integrated_water_vapour_mean:
                        type: string
                      total_column_integrated_water_vapour_anomaly:
                        type: string
                      temperature_2m_mean:
                        type: string
                      temperature_2m_anomaly:
                        type: string
                      dew_point_2m_mean:
                        type: string
                      dew_point_2m_anomaly:
                        type: string
                      pressure_msl_mean:
                        type: string
                      pressure_msl_anomaly:
                        type: string
                      sea_surface_temperature_mean:
                        type: string
                      sea_surface_temperature_anomaly:
                        type: string
                      wind_u_component_10m_mean:
                        type: string
                      wind_u_component_10m_anomaly:
                        type: string
                      wind_v_component_10m_mean:
                        type: string
                      wind_v_component_10m_anomaly:
                        type: string
                      wind_u_component_100m_mean:
                        type: string
                      wind_u_component_100m_anomaly:
                        type: string
                      wind_v_component_100m_mean:
                        type: string
                      wind_v_component_100m_anomaly:
                        type: string
                      snowfall_water_equivalent_mean:
                        type: string
                      snowfall_water_equivalent_anomaly:
                        type: string
                      precipitation_mean:
                        type: string
                      precipitation_anomaly:
                        type: string
                      cloud_cover_mean:
                        type: string
                      cloud_cover_anomaly:
                        type: string
                      sunshine_duration_mean:
                        type: string
                      sunshine_duration_anomaly:
                        type: string
                      soil_temperature_0_to_7cm_mean:
                        type: string
                      soil_temperature_0_to_7cm_anomaly:
                        type: string
                      temperature_max6h_2m_mean:
                        type: string
                      temperature_max6h_2m_anomaly:
                        type: string
                      temperature_min6h_2m_mean:
                        type: string
                      temperature_min6h_2m_anomaly:
                        type: string
                  monthly:
                    type: object
                    properties:
                      time:
                        type: array
                        items:
                          type: string
                      wind_gusts_10m_anomaly:
                        type: array
                        items:
                          type: number
                          format: float
                      wind_speed_10m_mean:
                        type: array
                        items:
                          type: number
   

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# Full source: https://raw.githubusercontent.com/api-evangelist/open-meteo/refs/heads/main/openapi/open-meteo-seasonal-forecast-apis-api-openapi.yml