Average annual temperature is 11.1 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -5.1 °C
Number of sunny days: 120 days
Number of rainy days: 245 days
Look at detailed online map of Sisland
* Weather data for Sisland United Kingdom is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 13.3 | 14.6 | 15.3 | 16.2 | 19.5 | 27.0 | 27.6 | 25.7 | 29.6 | 23.2 | 14.7 | 13.9 |
| Average daytime temperature (°C) | 8.2 | 9.6 | 9.9 | 11.8 | 15.4 | 21.0 | 20.9 | 21.1 | 21.7 | 16.5 | 10.2 | 9.6 |
| Average temperature (°C) | 5.0 | 6.1 | 7.0 | 7.9 | 11.6 | 16.7 | 17.1 | 17.0 | 17.4 | 12.9 | 7.4 | 7.2 |
| Average night temperature (°C) | 1.8 | 3.0 | 3.8 | 3.8 | 7.8 | 12.2 | 13.2 | 13.1 | 13.3 | 9.7 | 4.7 | 4.3 |
| Absolute minimum temperature (°C) | -5.1 | -3.3 | -3.9 | -0.2 | 3.0 | 8.8 | 8.9 | 8.7 | 9.3 | 3.6 | -3.4 | -3.8 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 8.0 | 10.0 | 12.0 | 14.0 | 16.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.3 | 9.9 | 11.9 | 13.9 | 15.8 | 16.7 | 16.3 | 14.7 | 12.7 | 10.6 | 8.8 | 7.7 |
| Daylight minimum duration (h) | 7.0 | 9.0 | 10.0 | 12.0 | 14.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 7.0 |
| Sunshine mean duration (h) | 4.2 | 4.9 | 4.5 | 9.1 | 10.9 | 12.0 | 10.8 | 11.2 | 8.5 | 5.2 | 4.0 | 2.5 |
| Precipitation (mm) | 49 | 4 | 87 | 76 | 65 | 23 | 132 | 69 | 82 | 141 | 84 | 75 |
| Sunny days | 12 | 15 | 1 | 8 | 16 | 20 | 5 | 8 | 12 | 8 | 9 | 6 |
| Rainy days | 19 | 13 | 30 | 22 | 15 | 10 | 26 | 23 | 18 | 23 | 21 | 25 |
| Snow days | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Sisland during the most sunny months:
Months with the longest average daylight duration in Sisland:
The largest precipitation sum in Sisland is at