Average annual temperature is 11.9 °C
Absolute maximum temperature: 30.2 °C
Absolute minimum temperature: -3.4 °C
Number of sunny days: 102 days
Number of rainy days: 263 days
Look at detailed online map of Trefflay
* Weather data for Trefflay 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) | 12.4 | 15.1 | 16.1 | 17.8 | 20.2 | 28.0 | 26.1 | 26.4 | 30.2 | 26.8 | 14.6 | 13.8 |
| Average daytime temperature (°C) | 8.2 | 9.8 | 11.1 | 13.5 | 16.6 | 22.3 | 20.2 | 20.7 | 22.0 | 17.3 | 11.4 | 10.3 |
| Average temperature (°C) | 6.1 | 6.2 | 8.3 | 9.5 | 12.7 | 17.4 | 16.5 | 16.8 | 17.9 | 13.7 | 9.1 | 8.4 |
| Average night temperature (°C) | 3.9 | 3.1 | 5.8 | 5.8 | 9.1 | 12.7 | 12.9 | 13.3 | 14.1 | 10.5 | 6.9 | 6.3 |
| Absolute minimum temperature (°C) | -3.4 | -1.6 | -1.2 | 0.9 | 6.7 | 9.4 | 8.0 | 10.0 | 8.0 | 6.8 | 1.2 | -0.1 |
| 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) | 3.1 | 6.1 | 5.3 | 8.0 | 11.2 | 11.8 | 9.1 | 8.9 | 8.6 | 6.3 | 4.3 | 2.9 |
| Precipitation (mm) | 112 | 18 | 154 | 103 | 46 | 39 | 94 | 70 | 63 | 89 | 141 | 102 |
| Sunny days | 7 | 11 | 5 | 10 | 16 | 16 | 1 | 8 | 8 | 10 | 4 | 6 |
| Rainy days | 24 | 17 | 26 | 20 | 15 | 14 | 30 | 23 | 22 | 21 | 26 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Trefflay during the most sunny months:
Months with the longest average daylight duration in Trefflay:
The largest precipitation sum in Trefflay is at