Average annual temperature is 7.1 °C
Absolute maximum temperature: 24.4 °C
Absolute minimum temperature: -11.0 °C
Number of sunny days: 143 days
Number of rainy days: 189 days
Number of snow days: 33 days
Look at detailed online map of Ornö
* Weather data for Ornö Sweden is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 5.0 | 5.6 | 6.4 | 7.6 | 14.4 | 24.4 | 22.9 | 21.3 | 22.7 | 16.1 | 9.6 | 7.0 |
| Average daytime temperature (°C) | 3.0 | 2.2 | 2.2 | 4.6 | 9.3 | 15.8 | 19.0 | 17.9 | 17.3 | 9.5 | 4.1 | 0.9 |
| Average temperature (°C) | 1.9 | 0.8 | 0.5 | 3.2 | 8.0 | 14.3 | 16.6 | 16.0 | 15.2 | 7.2 | 2.4 | -1.4 |
| Average night temperature (°C) | 0.3 | -0.9 | -1.4 | 1.9 | 6.7 | 12.8 | 13.8 | 13.9 | 12.8 | 4.7 | 0.2 | -4.1 |
| Absolute minimum temperature (°C) | -3.8 | -4.4 | -5.1 | -2.8 | 0.8 | 7.0 | 11.1 | 11.9 | 9.8 | -2.2 | -6.6 | -11.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 13.0 | 15.0 | 17.0 | 18.0 | 18.0 | 16.0 | 14.0 | 11.0 | 8.0 | 6.0 |
| Daylight mean duration (h) | 7.1 | 9.3 | 11.8 | 14.5 | 17.0 | 18.4 | 17.7 | 15.4 | 12.8 | 10.2 | 7.7 | 6.3 |
| Daylight minimum duration (h) | 6.0 | 8.0 | 10.0 | 13.0 | 15.0 | 18.0 | 16.0 | 14.0 | 11.0 | 8.0 | 6.0 | 6.0 |
| Sunshine mean duration (h) | 2.2 | 3.4 | 4.6 | 10.1 | 13.5 | 14.7 | 13.9 | 8.6 | 8.2 | 4.9 | 1.6 | 0.9 |
| Precipitation (mm) | 70 | 37 | 92 | 20 | 26 | 40 | 53 | 101 | 40 | 80 | 93 | 55 |
| Sunny days | 9 | 11 | 9 | 17 | 23 | 20 | 6 | 9 | 17 | 10 | 4 | 8 |
| Rainy days | 20 | 12 | 11 | 12 | 8 | 10 | 25 | 22 | 13 | 21 | 20 | 15 |
| Snow days | 2 | 5 | 11 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 8 |
The best time to visit Ornö during the most sunny months:
Months with the longest average daylight duration in Ornö:
The largest precipitation sum in Ornö is at