Average annual temperature is 10.3 °C
Absolute maximum temperature: 36.9 °C
Absolute minimum temperature: -13.1 °C
Number of sunny days: 142 days
Number of rainy days: 215 days
Number of snow days: 8 days
Look at detailed online map of Lake Cowichan
* Weather data for Lake Cowichan 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) | 11.3 | 9.4 | 15.3 | 24.4 | 31.8 | 32.1 | 32.1 | 36.9 | 29.0 | 24.8 | 13.2 | 12.0 |
| Average daytime temperature (°C) | 6.5 | 5.8 | 9.0 | 11.3 | 22.8 | 24.1 | 27.5 | 28.1 | 21.2 | 15.4 | 9.1 | 7.8 |
| Average temperature (°C) | 3.8 | 2.3 | 3.7 | 6.4 | 15.5 | 16.5 | 19.8 | 20.7 | 14.8 | 9.7 | 4.7 | 4.9 |
| Average night temperature (°C) | 1.8 | -0.3 | -0.4 | 2.6 | 9.0 | 9.5 | 12.5 | 14.0 | 9.7 | 6.0 | 1.9 | 2.9 |
| Absolute minimum temperature (°C) | -6.0 | -13.1 | -10.3 | -3.7 | 4.2 | 4.8 | 9.5 | 9.0 | 2.9 | -6.5 | -3.5 | -1.6 |
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Daylight maximum duration (h) | 9.0 | 10.0 | 12.0 | 14.0 | 15.0 | 16.0 | 16.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 |
| Daylight mean duration (h) | 8.8 | 10.2 | 11.9 | 13.7 | 15.3 | 16.1 | 15.7 | 14.3 | 12.6 | 10.8 | 9.2 | 8.3 |
| Daylight minimum duration (h) | 8.0 | 9.0 | 11.0 | 12.0 | 14.0 | 15.0 | 15.0 | 13.0 | 11.0 | 9.0 | 8.0 | 8.0 |
| Sunshine mean duration (h) | 2.3 | 3.6 | 6.6 | 6.1 | 12.0 | 12.6 | 13.6 | 11.8 | 8.4 | 6.3 | 4.7 | 2.2 |
| Precipitation (mm) | 165 | 165 | 117 | 196 | 29 | 32 | 15 | 19 | 92 | 193 | 187 | 281 |
| Sunny days | 3 | 5 | 8 | 3 | 19 | 16 | 24 | 19 | 12 | 16 | 12 | 5 |
| Rainy days | 27 | 19 | 22 | 27 | 12 | 14 | 7 | 12 | 18 | 15 | 17 | 25 |
| Snow days | 1 | 4 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
The best time to visit Lake Cowichan during the most sunny months:
Months with the longest average daylight duration in Lake Cowichan:
The largest precipitation sum in Lake Cowichan is at