Average annual temperature is 10.9 °C
Absolute maximum temperature: 35.5 °C
Absolute minimum temperature: -11.0 °C
Number of sunny days: 135 days
Number of rainy days: 219 days
Number of snow days: 11 days
Look at detailed online map of Willisau District
* Weather data for Willisau District 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) | 15.4 | 14.1 | 17.9 | 18.4 | 22.8 | 30.4 | 33.6 | 35.5 | 29.2 | 25.3 | 15.4 | 12.1 |
| Average daytime temperature (°C) | 4.7 | 7.4 | 10.3 | 11.2 | 17.3 | 25.0 | 24.8 | 24.9 | 23.2 | 17.7 | 8.5 | 6.5 |
| Average temperature (°C) | 2.2 | 3.1 | 6.3 | 7.3 | 12.9 | 19.5 | 19.7 | 19.8 | 17.9 | 13.0 | 5.5 | 3.6 |
| Average night temperature (°C) | -0.4 | -0.3 | 2.3 | 3.6 | 8.9 | 13.8 | 15.1 | 14.8 | 13.2 | 8.9 | 2.6 | 1.0 |
| Absolute minimum temperature (°C) | -9.1 | -6.3 | -2.7 | -2.8 | 4.7 | 10.6 | 9.1 | 8.2 | 6.3 | 3.2 | -3.6 | -11.0 |
| 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) | 2.9 | 6.5 | 6.6 | 6.8 | 8.4 | 13.3 | 11.9 | 10.5 | 10.3 | 7.6 | 3.6 | 3.8 |
| Precipitation (mm) | 52 | 23 | 136 | 127 | 146 | 58 | 143 | 115 | 46 | 91 | 180 | 197 |
| Sunny days | 9 | 16 | 11 | 6 | 8 | 13 | 7 | 12 | 21 | 16 | 4 | 12 |
| Rainy days | 14 | 11 | 20 | 24 | 23 | 17 | 24 | 19 | 9 | 15 | 24 | 19 |
| Snow days | 8 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 |
The best time to visit Willisau District during the most sunny months:
Months with the longest average daylight duration in Willisau District:
The largest precipitation sum in Willisau District is at