DWD Precipitation
Radar-based precipitation measurements and forecasts for your exact location, directly in Home Assistant.
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Installation ·
Configuration ·
Entities ·
Rain warnings ·
FAQ ·
Troubleshooting
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[!IMPORTANT]
This integration only works for locations within Germany and areas immediately adjacent to the German border.
The DWD radar composites do not cover other countries.
Features
- Location-precise: values come from the ~1 km radar grid cell containing your coordinates
- Live: the nowcast sensors refresh every 5 minutes
- Two-hour forecast: forecast totals, peak intensity, the wettest hour ahead, and when rain starts and stops
- Precipitation type: rain, drizzle, snow, sleet, graupel, hail, freezing rain
- Measured totals: past hour, past 24 hours, yesterday, and a days-without-rain counter
- Long-term totals: running rain totals for Home Assistant's statistics, so weekly, monthly and yearly sums work out of the box
- Rain warnings: your own warnings, such as "Laundry, 60 minutes ahead", each an on/off entity for automations, optionally only for rain above a minimum
- Rain events for blueprints (optional): each shower followed from the first forecast until it has passed, with forecast and measured amounts side by side
- Adjustable thresholds: choose how much rain counts, for the forecast sensors and for rain events alike
Entities
All entities belong to one DWD Precipitation device per configured location (rain warnings are a device each):
- Radar nowcast, every 5 minutes: Precipitation last 60 min, next 60 min, next 60–120 min and next 120 min; Precipitation intensity now; Peak intensity next 60 min, next 60–120 min and next 120 min; Peak hourly precipitation next 120 min; Precipitation start and end; Precipitation expected; Precipitation type now
- Gauge-adjusted analyses, hourly and daily: Precipitation previous hour, last 24h and yesterday
- For statistics: Precipitation total and Precipitation total daily
- Timespan without precipitation, and the optional Rain events sensor for blueprints
- Rain warnings you add yourself, each a device of its own with an on/off and a status entity
The entity overview lists every entity with its id, unit and update interval.
[!NOTE]
Upgrading from a version before 2026.11.0? Several entities were renamed, and existing installs keep their old entity ids. See Upgrading.
Screenshots
Installation
Home Assistant 2026.11 and newer: DWD Precipitation is in the built-in Marketplace. Go to Settings > Marketplace, search for DWD Precipitation and select Install, or use this button:
Installed with HACS before? Nothing to do: the Marketplace takes it over when Home Assistant 2026.11 first starts.
Home Assistant 2026.10 and older: install it with HACS, then restart Home Assistant:
Then add DWD Precipitation to Home Assistant with this button:
Enter a name and pick the location; the configuration guide explains every option. Manual installation, updates and removal are described in the installation guide.
Data source
All values are based on data from the Deutscher Wetterdienst (DWD), from its Open Data server:
Source: Deutscher Wetterdienst, under CC BY 4.0 (DWD legal notice). The integration processes the data: it reads the radar grid cell holding your location and derives totals, peaks, start and end times and rain events from it. Every entity names the source in its attribution attribute: "Based on data from Deutscher Wetterdienst (DWD)".
This project is not made, endorsed or supported by the DWD. Its rain warnings are rules you set on DWD's radar forecast, not official DWD weather warnings; those are issued by the DWD itself at dwd.de.
Current status of the DWD radar stations
License
This integration is licensed under the Apache License 2.0.
It owes a lot to the contributors of the wradlib package: early versions embedded parts of it, and the test suite still checks every parser and grid lookup against it.
