Average annual temperature is 12.5 °C
Absolute maximum temperature: 30.4 °C
Absolute minimum temperature: -3.0 °C
Number of sunny days: 111 days
Number of rainy days: 254 days
Look at detailed online map of Tréanna
* Weather data for Tréanna 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) | 12.6 | 13.7 | 15.0 | 19.2 | 23.5 | 27.6 | 25.6 | 28.5 | 30.4 | 26.1 | 15.0 | 14.7 |
| Average daytime temperature (°C) | 8.8 | 10.3 | 11.2 | 14.0 | 18.0 | 23.1 | 19.9 | 20.8 | 22.1 | 17.4 | 12.2 | 11.1 |
| Average temperature (°C) | 6.7 | 6.7 | 8.7 | 10.0 | 13.6 | 18.2 | 16.8 | 17.1 | 18.1 | 14.1 | 9.9 | 9.2 |
| Average night temperature (°C) | 4.5 | 3.5 | 6.3 | 6.4 | 9.5 | 13.5 | 13.6 | 13.7 | 14.5 | 11.1 | 7.8 | 7.1 |
| Absolute minimum temperature (°C) | -3.0 | -0.2 | -1.2 | 2.9 | 6.2 | 9.5 | 10.4 | 10.4 | 9.2 | 7.0 | 3.0 | 0.2 |
| 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 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.9 | 10.2 | 11.9 | 13.7 | 15.2 | 16.0 | 15.6 | 14.3 | 12.6 | 10.8 | 9.3 | 8.4 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 3.7 | 6.3 | 5.1 | 8.3 | 11.7 | 12.2 | 9.5 | 9.5 | 9.1 | 5.9 | 4.3 | 3.1 |
| Precipitation (mm) | 144 | 15 | 231 | 108 | 63 | 82 | 132 | 73 | 87 | 127 | 200 | 143 |
| Sunny days | 7 | 17 | 5 | 8 | 17 | 18 | 5 | 7 | 9 | 10 | 4 | 4 |
| Rainy days | 24 | 11 | 26 | 22 | 14 | 12 | 26 | 24 | 21 | 21 | 26 | 27 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Tréanna during the most sunny months:
Months with the longest average daylight duration in Tréanna:
The largest precipitation sum in Tréanna is at