Average annual temperature is 4.6 °C
Absolute maximum temperature: 25.3 °C
Absolute minimum temperature: -14.6 °C
Number of sunny days: 155 days
Number of rainy days: 148 days
Number of snow days: 62 days
Look at detailed online map of Västerö
* Weather data for Västerö Finland is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 4.1 | 4.6 | 2.7 | 5.3 | 14.8 | 23.2 | 23.1 | 25.3 | 19.3 | 12.6 | 5.3 | 3.8 |
| Average daytime temperature (°C) | -0.4 | -0.9 | -2.9 | 2.0 | 8.9 | 15.2 | 17.2 | 18.4 | 15.7 | 5.5 | 0.3 | -2.8 |
| Average temperature (°C) | -1.7 | -2.7 | -5.1 | -0.6 | 6.9 | 13.2 | 15.9 | 16.6 | 14.1 | 4.1 | -1.3 | -4.5 |
| Average night temperature (°C) | -3.2 | -4.7 | -7.6 | -3.1 | 5.0 | 11.3 | 14.4 | 14.5 | 12.3 | 2.6 | -3.3 | -6.4 |
| Absolute minimum temperature (°C) | -12.1 | -8.9 | -14.6 | -13.1 | -0.8 | 4.1 | 12.5 | 12.5 | 7.8 | -3.3 | -12.7 | -12.7 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 7.0 | 10.0 | 13.0 | 16.0 | 19.0 | 20.0 | 20.0 | 17.0 | 14.0 | 11.0 | 8.0 | 5.0 |
| Daylight mean duration (h) | 5.8 | 8.7 | 11.8 | 15.0 | 18.2 | 20.3 | 19.2 | 16.2 | 13.0 | 9.8 | 6.8 | 4.8 |
| Daylight minimum duration (h) | 4.0 | 7.0 | 10.0 | 13.0 | 16.0 | 19.0 | 17.0 | 14.0 | 11.0 | 8.0 | 5.0 | 4.0 |
| Sunshine mean duration (h) | 1.5 | 3.1 | 5.6 | 9.7 | 13.0 | 15.0 | 12.2 | 10.0 | 6.9 | 5.3 | 0.7 | 0.5 |
| Precipitation (mm) | 50 | 25 | 48 | 38 | 37 | 22 | 105 | 107 | 75 | 97 | 80 | 46 |
| Sunny days | 12 | 13 | 13 | 20 | 19 | 21 | 12 | 6 | 8 | 13 | 6 | 12 |
| Rainy days | 12 | 4 | 3 | 9 | 10 | 9 | 19 | 25 | 22 | 17 | 12 | 6 |
| Snow days | 7 | 11 | 15 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 12 | 13 |
The best time to visit Västerö during the most sunny months:
Months with the longest average daylight duration in Västerö:
The largest precipitation sum in Västerö is at