Average annual temperature is 5.4 °C
Absolute maximum temperature: 29.7 °C
Absolute minimum temperature: -15.3 °C
Number of sunny days: 143 days
Number of rainy days: 165 days
Number of snow days: 57 days
Look at detailed online map of Mustajoki
* Weather data for Mustajoki 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 | 5.4 | 4.7 | 15.5 | 22.5 | 29.4 | 23.8 | 29.7 | 23.0 | 13.7 | 6.6 | 4.3 |
| Average daytime temperature (°C) | -0.6 | -0.6 | 0.1 | 9.7 | 15.0 | 20.8 | 19.9 | 19.9 | 17.7 | 5.7 | -0.3 | -3.6 |
| Average temperature (°C) | -2.2 | -2.8 | -3.1 | 3.7 | 10.0 | 16.1 | 16.2 | 16.6 | 14.2 | 3.3 | -1.9 | -5.4 |
| Average night temperature (°C) | -3.8 | -5.4 | -6.6 | -1.4 | 4.5 | 10.8 | 12.6 | 13.4 | 11.3 | 1.2 | -3.7 | -7.6 |
| Absolute minimum temperature (°C) | -13.5 | -13.0 | -15.3 | -10.4 | -2.7 | 3.1 | 10.5 | 11.1 | 6.2 | -6.7 | -15.2 | -15.3 |
| 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) | 6.4 | 9.0 | 11.8 | 14.8 | 17.6 | 19.3 | 18.5 | 15.8 | 12.9 | 10.0 | 7.2 | 5.5 |
| 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) | 1.0 | 2.9 | 5.5 | 10.8 | 12.7 | 14.9 | 12.1 | 8.7 | 7.5 | 4.7 | 0.7 | 0.3 |
| Precipitation (mm) | 79 | 27 | 92 | 34 | 35 | 26 | 147 | 147 | 104 | 92 | 85 | 27 |
| Sunny days | 10 | 16 | 10 | 21 | 20 | 15 | 4 | 5 | 7 | 14 | 9 | 12 |
| Rainy days | 12 | 1 | 10 | 9 | 11 | 15 | 27 | 26 | 23 | 16 | 11 | 4 |
| Snow days | 9 | 11 | 11 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 10 | 15 |
The best time to visit Mustajoki during the most sunny months:
Months with the longest average daylight duration in Mustajoki:
The largest precipitation sum in Mustajoki is at