- Bonn ›
- Weather by month
Bonn Weather by Month
Average temperatures, rainfall and humidity for Bonn, Germany, month by month, built from OpenWeather’s historical records. Use it to see what a typical Bonn month looks like before you travel — then check the live Bonn forecast for the days ahead.
Warmest month
July
25°C average high
Coolest month
January
1°C average low
Wettest month
October
76 mm of rain
Driest month
February
50 mm of rain
Average temperature and rainfall in Bonn by month
Averages of the daily highs and lows recorded in each month, with total rainfall, mean humidity and mean wind speed.
| Month | Avg high | Avg low | Record low / high | Rainfall | Humidity | Wind |
|---|---|---|---|---|---|---|
| January | 6°C | 1°C | -11°C / 15°C | 63 mm | 85% | 14 km/h |
| February | 8°C | 2°C | -12°C / 20°C | 50 mm | 79% | 14 km/h |
| March | 12°C | 3°C | -17°C / 25°C | 66 mm | 71% | 13 km/h |
| April | 15°C | 5°C | -5°C / 27°C | 54 mm | 67% | 12 km/h |
| May | 19°C | 9°C | 0°C / 33°C | 67 mm | 69% | 11 km/h |
| June | 24°C | 13°C | 5°C / 39°C | 64 mm | 69% | 10 km/h |
| July | 25°C | 15°C | 7°C / 39°C | 60 mm | 68% | 10 km/h |
| August | 25°C | 15°C | 6°C / 38°C | 69 mm | 70% | 10 km/h |
| September | 21°C | 11°C | 2°C / 34°C | 70 mm | 76% | 10 km/h |
| October | 15°C | 9°C | -4°C / 28°C | 76 mm | 83% | 11 km/h |
| November | 10°C | 5°C | -6°C / 21°C | 60 mm | 85% | 12 km/h |
| December | 7°C | 3°C | -14°C / 18°C | 61 mm | 85% | 13 km/h |
Best time to visit Bonn
The most comfortable time to visit Bonn is generally June to August, balancing mild daytime temperatures against the driest stretch of the year. The city has strongly marked seasons and rainfall is spread evenly across the months, totalling about 759 mm a year.
Travellers who prefer heat should aim for July, when highs average 25°C. October is the month to avoid if rain would spoil your plans — it averages 76 mm, roughly 2× the rainfall of the driest month (February).
Source: OpenWeather historical and statistical weather data. Values are long-term averages, not a forecast — see the Bonn forecast for what is happening now.
Weather across Germany right now
- Aachen22°C
- Augsburg29°C
- Berlin21°C
- Bielefeld19°C
- Bochum18°C
- Bonn25°C
- Braunschweig19°C
- Bremen18°C
- Chemnitz25°C
- Cologne23°C
- Dortmund18°C
- Dresden27°C
- Duisburg18°C
- Düsseldorf21°C
- Essen18°C
- Frankfurt28°C
- Freiburg im Breisgau30°C
- Gelsenkirchen18°C
- Hamburg18°C
- Hannover19°C
- Karlsruhe31°C
- Kiel18°C
- Leipzig25°C
- Mannheim30°C
- Mönchengladbach17°C
- Munich29°C
- Münster17°C
- Nuremberg29°C
- Saarbrücken29°C
- Stuttgart31°C
- Wiesbaden28°C
- Wuppertal20°C
