Average annual temperature is 8.0 °C
Absolute maximum temperature: 32.9 °C
Absolute minimum temperature: -17.9 °C
Number of sunny days: 103 days
Number of rainy days: 222 days
Number of snow days: 40 days
Look at detailed online map of Tretsch
* Weather data for Tretsch Switzerland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 11.2 | 12.7 | 16.6 | 18.3 | 20.2 | 30.3 | 31.4 | 32.9 | 26.3 | 24.6 | 11.5 | 9.4 |
| Average daytime temperature (°C) | 2.5 | 5.5 | 8.7 | 8.9 | 15.1 | 21.6 | 22.2 | 21.9 | 21.5 | 16.9 | 5.5 | 3.4 |
| Average temperature (°C) | -1.3 | -0.3 | 3.3 | 4.8 | 10.5 | 16.6 | 17.1 | 16.7 | 15.2 | 11.1 | 1.5 | -0.4 |
| Average night temperature (°C) | -5.5 | -5.5 | -1.6 | 0.6 | 5.5 | 10.2 | 12.1 | 11.8 | 9.7 | 5.9 | -3.3 | -4.8 |
| Absolute minimum temperature (°C) | -13.2 | -17.9 | -8.1 | -5.8 | 1.2 | 6.0 | 5.7 | 4.6 | 3.2 | 0.5 | -13.1 | -15.9 |
| 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) | 9.0 | 10.3 | 11.9 | 13.6 | 15.1 | 15.8 | 15.5 | 14.2 | 12.6 | 10.9 | 9.4 | 8.6 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 4.9 | 6.8 | 7.4 | 7.7 | 9.1 | 13.3 | 12.1 | 9.7 | 9.9 | 7.6 | 3.6 | 3.7 |
| Precipitation (mm) | 83 | 74 | 185 | 208 | 208 | 68 | 383 | 256 | 111 | 168 | 310 | 281 |
| Sunny days | 10 | 15 | 9 | 2 | 2 | 7 | 4 | 10 | 18 | 15 | 2 | 9 |
| Rainy days | 7 | 8 | 17 | 22 | 29 | 23 | 27 | 21 | 12 | 16 | 24 | 16 |
| Snow days | 14 | 5 | 5 | 6 | 0 | 0 | 0 | 0 | 0 | 0 | 4 | 6 |
The best time to visit Tretsch during the most sunny months:
Months with the longest average daylight duration in Tretsch:
The largest precipitation sum in Tretsch is at