Home › Cities › Canada › British Columbia › Port Alberni
Port Alberni, British Columbia climate
Csb Warm-summer Mediterranean
Port Alberni has a seasonal cool-temperate climate (Warm-summer Mediterranean, Köppen Csb). The hottest month is August with an average daily high near 26°C, while the coldest is December averaging around 0°C at night. Precipitation totals about 1803 mm a year and is strongly seasonal — November alone averages 323 mm while July barely receives 23 mm.
Temperature & precipitation
Daily high–low temperature range with the monthly average, plus monthly precipitation · 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)Port Alberni climate normals (1991–2020)
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 10 | 14 | 19 | 21 | 25 | 26 | 22 | 14 | 8 | 4 |
| Avg temp (°C) | 2 | 3 | 5 | 8 | 13 | 15 | 18 | 18 | 15 | 10 | 5 | 2 |
| Avg low (°C) | 0 | −1 | 1 | 3 | 6 | 9 | 11 | 11 | 9 | 5 | 2 | 0 |
| Precipitation (mm) | 300 | 169 | 201 | 103 | 53 | 38 | 23 | 35 | 86 | 188 | 323 | 285 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Avg high (°C) | 5 | 7 | 10 | 14 | 19 | 21 |
| Avg temp (°C) | 2 | 3 | 5 | 8 | 13 | 15 |
| Avg low (°C) | 0 | −1 | 1 | 3 | 6 | 9 |
| Precipitation (mm) | 300 | 169 | 201 | 103 | 53 | 38 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Avg high (°C) | 25 | 26 | 22 | 14 | 8 | 4 |
| Avg temp (°C) | 18 | 18 | 15 | 10 | 5 | 2 |
| Avg low (°C) | 11 | 11 | 9 | 5 | 2 | 0 |
| Precipitation (mm) | 23 | 35 | 86 | 188 | 323 | 285 |
Sky & atmosphere
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 71 | 75 | 72 | 68 | 67 | 51 | 52 | 54 | 68 | 74 | 77 |
| Relative humidity (%) | 94 | 90 | 87 | 82 | 79 | 79 | 79 | 80 | 83 | 88 | 93 | 95 |
| Wind speed (km/h) | 2.2 | 2.3 | 2.2 | 2.1 | 1.7 | 1.6 | 1.5 | 1.7 | 1.9 | 2.2 | 2.3 | 2.3 |
| Jan – Jun | Jan | Feb | Mar | Apr | May | Jun |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 75 | 71 | 75 | 72 | 68 | 67 |
| Relative humidity (%) | 94 | 90 | 87 | 82 | 79 | 79 |
| Wind speed (km/h) | 2.2 | 2.3 | 2.2 | 2.1 | 1.7 | 1.6 |
| Jul – Dec | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|
| Cloud cover (%) | 51 | 52 | 54 | 68 | 74 | 77 |
| Relative humidity (%) | 79 | 80 | 83 | 88 | 93 | 95 |
| Wind speed (km/h) | 1.5 | 1.7 | 1.9 | 2.2 | 2.3 | 2.3 |
Methodology & sources
Temperature & precipitation — 1991–2020 normals computed from 26 years of daily observations at Port Alberni (aut), a weather station, about 13 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.