Met Office

The Met Office is the United Kingdom’s national meteorological service.

The Met Office weather integrationIntegrations connect and integrate Home Assistant with your devices, services, and more. [Learn more] uses the Met Office’s DataHub API to retrieve forecast data for the location you select. It provides a weather entity with hourly, twice-daily, and daily forecasts.

Prerequisites

1. Register for a Met Office DataHub account.
2. After registration, subscribe to Site Specific Global Spot dataset to obtain your API key. Free tier subscription gives 360 calls per day, which is enough for using this integration

Configuration

To add the Met Office service to your Home Assistant instance, use this My button:

Details about the API are available in the DataHub API documentation. The datapoint-python library is used to retrieve data.

Multiple forecast locations

If adding multiple forecasts, it is important to note that there are restrictions of the number of API queries allowed on the free tier. Currently that restricts this integration to a single location. Multiple locations require a paid plan.

The Latitude and Longitude of the forecast location are used to generate the unique ID for a given forecast. Therefore if adding multiple forecasts, each must have a unique location.

Supported functionality

The Met Office integration provides the following entities.

This integration creates several weather entities for each entry created in the configuration by location: one weather entity with a summary and a forecast (daily, hourly, and twice-daily), and sensor entities for individual reporting on each of the individual measurements

Weather

The weather platform provides current conditions and forecasts that can be used with the weather dashboard card.

The integration supports three types of forecasts:

• Hourly forecast
  • Description: Detailed conditions including temperature, precipitation, wind, and cloud coverage.
  • Remarks: Provides information for next 3 days
• Twice daily forecast
  • Description: Shows expected conditions for day and night.
  • Remarks: Provides information for next 7 days
• Daily forecast
  • Description: Shows daily high/low temperatures and midday conditions.
  • Remarks: Provides information for next 7 days

Sensors

The following current weather data is provided:

• Weather
  • Description: One word summary of current weather conditions
• Temperature
  • Description: Current air temperature
  • Unit: °C
• Wind speed
  • Description: Current wind speed
  • Unit: m/s
• Probability of precipitation
  • Description: Chance of rain for the next hour
  • Unit: %
• UV index
  • Description: UV index on standard international scale

The following sensors are also provided however are disabled by default:

• Feels like temperature
  • Description: Subjective temperature accounting for wind and humidity
  • Unit: °C
• Humidity
  • Description: Relative humidity
  • Unit: %
• Pressure
  • Description: Atmospheric pressure
  • Unit: Pa
• Wind direction
  • Description: Wind direction in degrees
  • Unit: ° (degrees)
• Wind gust
  • Description: Maximum wind gust speed
  • Unit: m/s
• Visibility distance
  • Description: Distance of visibility
  • Unit: m

Diagnostic sensors

The following diagnostic sensors are disabled by default.

• Station Name
  • Description: Closest weather station for the configured location

Data updates

Weather data is automatically updated every 15 minutes from the Met Office DataHub.

Removing the integration

This integration follows standard integration removal.

To remove an integration instance from Home Assistant

1. Go to Settings > Devices & services and select the integration card.
2. From the list of devices, select the integration instance you want to remove.
3. Next to the entry, select the three dots menu. Then, select Delete.

After deleting the integration, you can unsubscribe from the Site Specific Global Spot dataset in your Met Office DataHub account.