Average annual temperature is 5.0 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -17.4 °C
Number of sunny days: 135 days
Number of rainy days: 170 days
Number of snow days: 60 days
Look at detailed online map of Iso-Röyhiö
* Weather data for Iso-Röyhiö 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 | 4.6 | 14.1 | 22.5 | 29.6 | 24.3 | 28.9 | 21.8 | 13.4 | 5.8 | 3.6 |
| Average daytime temperature (°C) | -1.0 | -1.3 | -0.3 | 8.1 | 15.0 | 20.9 | 19.8 | 19.8 | 17.3 | 5.3 | -0.7 | -4.0 |
| Average temperature (°C) | -2.8 | -3.5 | -3.6 | 2.4 | 10.0 | 16.2 | 16.2 | 16.5 | 14.0 | 2.9 | -2.2 | -6.0 |
| Average night temperature (°C) | -4.8 | -6.4 | -7.2 | -2.6 | 4.4 | 10.5 | 12.6 | 13.3 | 11.0 | 0.7 | -3.8 | -8.4 |
| Absolute minimum temperature (°C) | -14.9 | -14.3 | -16.3 | -10.3 | -3.0 | 2.2 | 10.6 | 10.2 | 5.9 | -5.9 | -15.1 | -17.4 |
| 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 | 5.0 |
| Daylight mean duration (h) | 6.4 | 8.9 | 11.8 | 14.8 | 17.6 | 19.4 | 18.5 | 15.9 | 12.9 | 10.0 | 7.2 | 5.4 |
| 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) | 0.7 | 2.9 | 5.2 | 10.9 | 12.1 | 14.8 | 11.8 | 9.0 | 6.7 | 4.7 | 0.5 | 0.3 |
| Precipitation (mm) | 70 | 28 | 84 | 33 | 44 | 36 | 129 | 177 | 102 | 92 | 83 | 34 |
| Sunny days | 12 | 16 | 9 | 21 | 18 | 16 | 5 | 7 | 4 | 10 | 8 | 9 |
| Rainy days | 12 | 1 | 9 | 9 | 12 | 14 | 26 | 24 | 26 | 17 | 10 | 10 |
| Snow days | 7 | 11 | 13 | 0 | 1 | 0 | 0 | 0 | 0 | 4 | 12 | 12 |
The best time to visit Iso-Röyhiö during the most sunny months:
Months with the longest average daylight duration in Iso-Röyhiö:
The largest precipitation sum in Iso-Röyhiö is at