Average annual temperature is 12.6 °C
Absolute maximum temperature: 32.6 °C
Absolute minimum temperature: -9.8 °C
Number of sunny days: 171 days
Number of rainy days: 188 days
Number of snow days: 6 days
Look at detailed online map of Bonn
* Weather data for Bonn United States is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 16.0 | 22.2 | 24.1 | 28.0 | 28.3 | 32.6 | 32.5 | 31.5 | 32.4 | 27.9 | 20.2 | 17.1 |
| Average daytime temperature (°C) | 8.4 | 12.1 | 12.0 | 18.9 | 21.7 | 26.1 | 29.0 | 27.4 | 24.9 | 19.0 | 12.2 | 9.3 |
| Average temperature (°C) | 3.7 | 5.2 | 5.5 | 11.9 | 15.5 | 19.7 | 23.2 | 21.8 | 19.2 | 13.6 | 6.4 | 4.8 |
| Average night temperature (°C) | 0.4 | 0.4 | 0.7 | 6.0 | 9.9 | 14.2 | 18.8 | 17.2 | 14.6 | 9.6 | 2.0 | 1.6 |
| Absolute minimum temperature (°C) | -7.0 | -9.8 | -8.0 | -0.9 | 2.2 | 8.8 | 14.5 | 11.3 | 9.0 | 1.7 | -7.0 | -5.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 |
| Daylight mean duration (h) | 9.7 | 10.7 | 12.0 | 13.3 | 14.4 | 14.9 | 14.6 | 13.7 | 12.5 | 11.2 | 10.0 | 9.4 |
| Daylight minimum duration (h) | 9.0 | 10.0 | 11.0 | 12.0 | 13.0 | 14.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 9.0 |
| Sunshine mean duration (h) | 3.4 | 6.9 | 7.3 | 8.8 | 10.0 | 11.0 | 11.2 | 10.9 | 9.5 | 7.5 | 7.1 | 5.1 |
| Precipitation (mm) | 121 | 65 | 119 | 94 | 85 | 111 | 113 | 100 | 32 | 77 | 49 | 101 |
| Sunny days | 8 | 16 | 16 | 15 | 16 | 13 | 7 | 14 | 15 | 16 | 21 | 14 |
| Rainy days | 21 | 11 | 14 | 15 | 15 | 17 | 24 | 17 | 15 | 15 | 8 | 16 |
| Snow days | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Bonn during the most sunny months:
The largest precipitation sum in Bonn is at