Average annual temperature is 6.2 °C
Absolute maximum temperature: 29.6 °C
Absolute minimum temperature: -33.4 °C
Number of sunny days: 105 days
Number of rainy days: 184 days
Number of snow days: 76 days
Look at detailed online map of Stornoway
* Weather data for Stornoway Canada is based on climate observations for 2026 year
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Absolute maximum temperature (°C) | 5.9 | 7.8 | 5.3 | 23.9 | 27.4 | 29.6 | 29.4 | 24.4 | 27.7 | 26.5 | 14.1 | 12.9 |
| Average daytime temperature (°C) | -2.2 | -2.6 | 1.7 | 11.1 | 16.5 | 20.0 | 24.3 | 20.7 | 20.5 | 14.4 | 2.7 | 1.2 |
| Average temperature (°C) | -5.7 | -8.0 | -2.6 | 5.0 | 10.4 | 15.4 | 19.8 | 16.5 | 15.7 | 10.3 | -1.1 | -2.6 |
| Average night temperature (°C) | -9.0 | -12.8 | -6.3 | 0.0 | 4.8 | 11.5 | 16.2 | 13.0 | 12.0 | 7.2 | -4.3 | -6.3 |
| Absolute minimum temperature (°C) | -21.6 | -33.4 | -13.1 | -10.6 | -2.6 | 5.5 | 10.4 | 7.9 | 5.0 | -4.1 | -13.0 | -23.0 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 |
| Daylight mean duration (h) | 9.1 | 10.4 | 11.9 | 13.5 | 14.9 | 15.6 | 15.3 | 14.1 | 12.5 | 10.9 | 9.5 | 8.7 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 14.0 | 13.0 | 11.0 | 10.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.3 | 5.1 | 5.7 | 8.0 | 10.7 | 8.1 | 9.7 | 9.2 | 8.1 | 5.3 | 5.1 | 3.5 |
| Precipitation (mm) | 113 | 70 | 82 | 82 | 99 | 156 | 195 | 159 | 93 | 106 | 74 | 104 |
| Sunny days | 8 | 5 | 7 | 12 | 18 | 5 | 1 | 4 | 13 | 10 | 9 | 13 |
| Rainy days | 7 | 5 | 6 | 14 | 13 | 25 | 30 | 27 | 17 | 19 | 10 | 11 |
| Snow days | 16 | 18 | 18 | 4 | 0 | 0 | 0 | 0 | 0 | 2 | 11 | 7 |
The best time to visit Stornoway during the most sunny months:
Months with the longest average daylight duration in Stornoway:
The largest precipitation sum in Stornoway is at