Average annual temperature is 5.6 °C
Absolute maximum temperature: 29.1 °C
Absolute minimum temperature: -16.6 °C
Number of sunny days: 132 days
Number of rainy days: 169 days
Number of snow days: 64 days
Look at detailed online map of Hersala
* Weather data for Hersala 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) | 3.1 | 5.0 | 6.0 | 18.0 | 23.6 | 29.0 | 25.3 | 29.1 | 22.3 | 14.0 | 7.2 | 3.3 |
| Average daytime temperature (°C) | -0.9 | -1.1 | 0.4 | 9.5 | 15.3 | 21.3 | 20.5 | 20.6 | 18.0 | 5.6 | 0.5 | -3.6 |
| Average temperature (°C) | -2.8 | -3.3 | -3.0 | 3.8 | 10.4 | 16.4 | 16.7 | 16.9 | 14.5 | 3.4 | -1.0 | -5.3 |
| Average night temperature (°C) | -4.6 | -6.6 | -6.7 | -1.5 | 4.9 | 10.8 | 13.1 | 13.4 | 11.5 | 1.3 | -2.9 | -7.0 |
| Absolute minimum temperature (°C) | -16.6 | -16.0 | -16.5 | -10.6 | -1.6 | 2.8 | 11.2 | 10.3 | 7.4 | -6.1 | -13.4 | -12.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 7.0 | 10.0 | 13.0 | 16.0 | 18.0 | 19.0 | 19.0 | 17.0 | 14.0 | 11.0 | 8.0 | 6.0 |
| Daylight mean duration (h) | 6.6 | 9.0 | 11.8 | 14.7 | 17.4 | 19.1 | 18.3 | 15.8 | 12.9 | 10.1 | 7.3 | 5.7 |
| Daylight minimum duration (h) | 5.0 | 7.0 | 10.0 | 13.0 | 16.0 | 18.0 | 17.0 | 14.0 | 11.0 | 8.0 | 6.0 | 5.0 |
| Sunshine mean duration (h) | 0.8 | 2.4 | 5.1 | 11.6 | 12.3 | 14.8 | 12.2 | 8.7 | 6.8 | 4.0 | 0.1 | 0.4 |
| Precipitation (mm) | 73 | 28 | 75 | 19 | 40 | 34 | 107 | 123 | 52 | 110 | 67 | 44 |
| Sunny days | 10 | 13 | 9 | 22 | 16 | 15 | 6 | 8 | 10 | 10 | 7 | 6 |
| Rainy days | 11 | 3 | 10 | 8 | 15 | 15 | 25 | 23 | 20 | 19 | 13 | 7 |
| Snow days | 10 | 12 | 12 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 10 | 18 |
The best time to visit Hersala during the most sunny months:
Months with the longest average daylight duration in Hersala:
The largest precipitation sum in Hersala is at