Average annual temperature is 10.4 °C
Absolute maximum temperature: 35.3 °C
Absolute minimum temperature: -6.5 °C
Number of sunny days: 167 days
Number of rainy days: 194 days
Number of snow days: 4 days
Look at detailed online map of Cowichan Bay
* Weather data for Cowichan Bay 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) | 11.5 | 10.7 | 14.8 | 21.7 | 30.7 | 28.8 | 33.2 | 35.3 | 27.2 | 23.8 | 15.7 | 12.8 |
| Average daytime temperature (°C) | 6.8 | 6.6 | 9.6 | 11.6 | 21.9 | 23.0 | 27.9 | 27.7 | 21.4 | 15.4 | 9.3 | 8.4 |
| Average temperature (°C) | 4.1 | 3.1 | 4.3 | 6.9 | 15.3 | 16.6 | 20.3 | 20.5 | 14.8 | 9.1 | 4.2 | 5.1 |
| Average night temperature (°C) | 1.7 | 0.7 | 0.3 | 3.1 | 10.0 | 10.7 | 12.4 | 13.4 | 9.1 | 5.0 | 0.3 | 2.7 |
| Absolute minimum temperature (°C) | -4.6 | -4.9 | -5.4 | -2.0 | 6.3 | 6.3 | 8.8 | 8.8 | 2.8 | -6.5 | -5.0 | -3.3 |
| 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) | 2.5 | 3.9 | 7.0 | 6.5 | 11.9 | 12.5 | 13.8 | 12.0 | 8.8 | 6.1 | 4.8 | 2.3 |
| Precipitation (mm) | 113 | 138 | 105 | 141 | 24 | 27 | 11 | 18 | 58 | 143 | 163 | 220 |
| Sunny days | 5 | 4 | 11 | 5 | 20 | 20 | 29 | 26 | 13 | 17 | 13 | 4 |
| Rainy days | 25 | 21 | 20 | 25 | 11 | 10 | 2 | 5 | 17 | 14 | 17 | 27 |
| Snow days | 1 | 3 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
The best time to visit Cowichan Bay during the most sunny months:
Months with the longest average daylight duration in Cowichan Bay:
The largest precipitation sum in Cowichan Bay is at