Climate Insights for Port Alberni

The climate in Port Alberni is cool. The average annual temperature is 8°C and approximately 2282mm of precipitation falls per year. Port Alberni receives a notable amount of rainfall throughout the year, including during its driest month. Port Alberni is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are February, December, January, when temperatures can drop to -1°C. Port Alberni experiences heavy snowfall, typically from January through December.

Temperatures in Port Alberni vary considerably across the year, with a 23°C difference between the coldest and warmest months. August is the warmest month, though highs remain moderate at 22°C with a mean of 16°C. The coldest month is February, when overnight lows fall to -1°C and the daily average is 2°C. Daily temperature variation is modest, with an average difference of 7°C between highs and lows. The sharpest temperature change occurs between September and October, with a 5°C shift in average temperatures.

Port Alberni is a very wet location, receiving approximately 2282mm of precipitation annually, which averages out to around 190mm per month. The wettest month is January, averaging 389mm of rainfall. November and December also tend to see above-average precipitation. The driest month is July, with just 44mm. That's 345mm less than January, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Port Alberni receives heavy snowfall, accumulating around 320cm annually from January through December. The snowiest month is January, with approximately 79cm. Winter travel should account for significant snow cover.

Port Alberni is relatively calm, with an average annual wind speed of 2km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is November, averaging 2km/h, though still comfortable for most outdoor activities. The calmest conditions occur in August, with average winds dropping to 1km/h, making it an ideal period for wind-sensitive activities. There is moderate seasonal variation in wind speed, with a 1km/h gap between the calmest and windiest months.

It is currently summer in Port Alberni, which began on June 21, 2026. Port Alberni is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 22°C, while the coldest stretch bottoms out in February near -1°C. Autumn is next, beginning on September 23, 2026 — 93 days from now.

The best time to visit Port Alberni is during July and August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 16°C with modest rainfall averaging 49mm per month. By contrast, February can be quite cold with temperatures dropping to -1°C. A light rain jacket is recommended, though showers are generally brief and shouldn't disrupt your plans.

The table below shows monthly climate averages for Port Alberni based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.