Average annual temperature is 5.4 °C
Absolute maximum temperature: 29.1 °C
Absolute minimum temperature: -16.3 °C
Number of sunny days: 118 days
Number of rainy days: 179 days
Number of snow days: 68 days
Look at detailed online map of Iso-Äiniö
* Weather data for Iso-Äiniö 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) | 2.8 | 4.4 | 5.1 | 17.5 | 23.3 | 28.1 | 24.0 | 29.1 | 21.8 | 13.5 | 6.5 | 2.8 |
| Average daytime temperature (°C) | -1.2 | -1.5 | -0.3 | 9.1 | 14.8 | 20.6 | 20.1 | 20.1 | 17.6 | 5.1 | 0.1 | -3.9 |
| Average temperature (°C) | -2.9 | -3.5 | -3.3 | 3.7 | 10.0 | 16.2 | 16.8 | 16.9 | 14.3 | 3.2 | -1.3 | -5.5 |
| Average night temperature (°C) | -4.6 | -6.6 | -6.8 | -1.4 | 4.9 | 11.0 | 13.4 | 13.9 | 11.5 | 1.5 | -3.0 | -7.1 |
| Absolute minimum temperature (°C) | -15.0 | -16.3 | -16.3 | -11.3 | -1.8 | 2.5 | 11.3 | 12.1 | 7.7 | -4.3 | -13.9 | -12.9 |
| 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) | 6.5 | 9.0 | 11.8 | 14.7 | 17.5 | 19.2 | 18.3 | 15.8 | 12.9 | 10.0 | 7.3 | 5.6 |
| 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 | 2.4 | 5.2 | 11.5 | 12.3 | 15.1 | 12.1 | 8.8 | 7.0 | 4.0 | 0.1 | 0.3 |
| Precipitation (mm) | 67 | 27 | 74 | 18 | 50 | 43 | 97 | 125 | 46 | 111 | 70 | 43 |
| Sunny days | 9 | 13 | 9 | 23 | 13 | 14 | 5 | 6 | 8 | 6 | 6 | 6 |
| Rainy days | 11 | 2 | 10 | 7 | 16 | 16 | 26 | 25 | 22 | 21 | 15 | 8 |
| Snow days | 11 | 13 | 12 | 0 | 2 | 0 | 0 | 0 | 0 | 4 | 9 | 17 |
The best time to visit Iso-Äiniö during the most sunny months:
Months with the longest average daylight duration in Iso-Äiniö:
The largest precipitation sum in Iso-Äiniö is at