Average annual temperature is 14.8 °C
Absolute maximum temperature: 38.2 °C
Absolute minimum temperature: -1.5 °C
Number of sunny days: 148 days
Number of rainy days: 217 days
Look at detailed online map of By
* Weather data for By France is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 19.2 | 16.5 | 23.6 | 24.1 | 28.7 | 30.6 | 31.7 | 38.2 | 34.0 | 31.8 | 20.2 | 16.2 |
| Average daytime temperature (°C) | 9.7 | 11.1 | 14.3 | 16.5 | 21.0 | 25.6 | 25.0 | 26.5 | 26.8 | 22.0 | 14.2 | 11.9 |
| Average temperature (°C) | 7.4 | 6.4 | 10.6 | 12.7 | 16.8 | 21.5 | 20.7 | 21.9 | 21.3 | 17.0 | 11.4 | 9.1 |
| Average night temperature (°C) | 5.0 | 3.0 | 7.5 | 9.2 | 13.0 | 17.7 | 16.5 | 17.4 | 16.9 | 12.7 | 8.5 | 6.4 |
| Absolute minimum temperature (°C) | -1.5 | -1.4 | -0.9 | 2.5 | 9.4 | 15.6 | 13.9 | 11.9 | 10.3 | 8.6 | -0.1 | 0.2 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.2 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 11.0 | 9.5 | 8.8 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 9.0 | 8.0 |
| Sunshine mean duration (h) | 4.4 | 6.9 | 7.2 | 9.4 | 12.1 | 11.5 | 11.9 | 11.0 | 10.0 | 7.1 | 4.9 | 4.0 |
| Precipitation (mm) | 137 | 38 | 107 | 63 | 49 | 100 | 33 | 41 | 74 | 194 | 224 | 158 |
| Sunny days | 8 | 23 | 10 | 13 | 11 | 14 | 12 | 14 | 16 | 14 | 4 | 9 |
| Rainy days | 23 | 5 | 21 | 17 | 20 | 16 | 19 | 17 | 14 | 17 | 26 | 22 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit By during the most sunny months:
Months with the longest average daylight duration in By:
The largest precipitation sum in By is at