Average annual temperature is 12.9 °C
Absolute maximum temperature: 33.3 °C
Absolute minimum temperature: -5.8 °C
Number of sunny days: 129 days
Number of rainy days: 235 days
Number of snow days: 1 day
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) | 15.4 | 15.8 | 20.1 | 20.6 | 26.2 | 30.9 | 31.9 | 31.1 | 33.3 | 27.1 | 16.8 | 13.4 |
| Average daytime temperature (°C) | 7.7 | 9.5 | 12.2 | 14.0 | 19.6 | 26.7 | 24.8 | 23.8 | 25.3 | 19.0 | 11.5 | 9.2 |
| Average temperature (°C) | 5.5 | 5.3 | 8.5 | 9.7 | 14.9 | 21.1 | 20.1 | 19.6 | 19.7 | 14.3 | 8.6 | 7.1 |
| Average night temperature (°C) | 3.0 | 1.6 | 4.6 | 5.3 | 10.0 | 14.9 | 15.1 | 15.5 | 14.5 | 10.2 | 5.7 | 4.9 |
| Absolute minimum temperature (°C) | -4.7 | -5.8 | -2.4 | -1.7 | 5.9 | 10.5 | 10.5 | 10.8 | 6.2 | 4.4 | -1.8 | -3.4 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.8 | 10.2 | 11.9 | 13.7 | 15.2 | 16.0 | 15.6 | 14.3 | 12.6 | 10.8 | 9.2 | 8.4 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.4 | 5.6 | 6.4 | 8.0 | 11.6 | 12.7 | 11.1 | 10.0 | 9.5 | 6.8 | 4.5 | 1.9 |
| Precipitation (mm) | 76 | 8 | 82 | 69 | 71 | 93 | 63 | 104 | 52 | 110 | 116 | 79 |
| Sunny days | 6 | 19 | 7 | 7 | 16 | 18 | 11 | 4 | 17 | 13 | 3 | 8 |
| Rainy days | 24 | 9 | 24 | 23 | 15 | 12 | 20 | 27 | 13 | 18 | 27 | 23 |
| Snow days | 1 | 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