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North Cowichan, British Columbia climate
Csb Warm-summer Mediterranean
North Cowichan has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is July with an average daily high near 75°F, while the coldest is January averaging around 36°F at night. Precipitation totals about 39 inches a year and is strongly seasonal — January alone averages 6.5 inches while July barely receives 0.77 inches. Light snow accumulates each winter (13 inches of snow per year on average).
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation split into rain and snow · 1991–2020 normals · hover a month for the exact figuresHours of sunshine per day
Estimated sunny hours each month — daylight length × clear-sky fraction · 1991–2020 monthly cloud cover (NASA POWER)North Cowichan climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 46 | 51 | 57 | 64 | 69 | 75 | 74 | 68 | 57 | 49 | 44 |
| Avg temp (°F) | 40 | 41 | 45 | 50 | 57 | 61 | 66 | 66 | 61 | 52 | 44 | 40 |
| Avg low (°F) | 36 | 36 | 39 | 43 | 49 | 54 | 58 | 58 | 54 | 47 | 40 | 36 |
| Precipitation (in) | 6.5 | 3.5 | 3.6 | 2.2 | 1.6 | 1.3 | 0.8 | 1.0 | 1.7 | 4.1 | 6.1 | 6.2 |
| Snowfall (in) | 3.4 | 3.0 | 1.0 | 0.0 | — | — | — | — | 0.0 | 0.1 | 0.9 | 4.6 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°F) | 44 | 46 | 51 | 57 | 64 | 69 |
| Avg temp (°F) | 40 | 41 | 45 | 50 | 57 | 61 |
| Avg low (°F) | 36 | 36 | 39 | 43 | 49 | 54 |
| Precipitation (in) | 6.5 | 3.5 | 3.6 | 2.2 | 1.6 | 1.3 |
| Snowfall (in) | 3.4 | 3.0 | 1.0 | 0.0 | — | — |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°F) | 75 | 74 | 68 | 57 | 49 | 44 |
| Avg temp (°F) | 66 | 66 | 61 | 52 | 44 | 40 |
| Avg low (°F) | 58 | 58 | 54 | 47 | 40 | 36 |
| Precipitation (in) | 0.8 | 1.0 | 1.7 | 4.1 | 6.1 | 6.2 |
| Snowfall (in) | — | — | 0.0 | 0.1 | 0.9 | 4.6 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 74 | 76 | 73 | 68 | 66 | 48 | 49 | 53 | 69 | 77 | 80 |
| Relative humidity (%) | 90 | 85 | 83 | 79 | 76 | 75 | 72 | 72 | 76 | 83 | 88 | 90 |
| Wind speed (mph) | 3.8 | 3.7 | 3.7 | 3.4 | 2.9 | 3.0 | 2.7 | 2.7 | 2.8 | 3.4 | 3.9 | 4.1 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 79 | 74 | 76 | 73 | 68 | 66 |
| Relative humidity (%) | 90 | 85 | 83 | 79 | 76 | 75 |
| Wind speed (mph) | 3.8 | 3.7 | 3.7 | 3.4 | 2.9 | 3.0 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 48 | 49 | 53 | 69 | 77 | 80 |
| Relative humidity (%) | 72 | 72 | 76 | 83 | 88 | 90 |
| Wind speed (mph) | 2.7 | 2.7 | 2.8 | 3.4 | 3.9 | 4.1 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 30 years of daily observations at Saltspring ST Mary's L, a weather station, about 11 km from the city centre. The underlying daily records come from NOAA's global station network.
Cloud, humidity, wind & sunshine — modelled estimates from NASA POWER, NASA's satellite-and-reanalysis climatology. This is the standard global source for atmospheric variables, which are not measured at most weather stations.