Chemainus (BC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Chemainus.
Climate overview of Chemainus
Chemainus, British Columbia, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to 7°C (45°F) in December.
With around 1428 mm (56 in) of annual rain/snowfall, Chemainus has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has a distinct rainy season from November to January, with warm summers and cold winters. The wettest month is November. The most sunshine falls in July, with an average of 9.6 hours of daily sunshine.
Chemainus Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Chemainus - and find the best time to visit.
Monthly Temperature in Chemainus
Depending on the time of the year, temperatures range from comfortable to chilly in Chemainus. Average daytime temperatures reach a comfortable 25°C (77°F) in July. In December, the coolest month of the year, temperatures drop to a chilly 7°C (45°F).
At night, temperatures range from around 14°C (57°F) in July to 2°C (36°F) in December.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Chemainus
Chemainus has a relatively rain/snowy climate with high precipitation levels, averaging 1428 mm (56 in) of rain/snowfall annually. Chemainus can be quite wet during November, receiving approximately 203 mm (8 in) of precipitation over 19 rainy days.
In contrast, during the driest month (July), you will experience much drier conditions, with 36 mm (1.4 in) of precipitation spread across 7 rainy days. For more details, please visit our Chemainus Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Chemainus
Chemainus can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.6 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 1.9 hours of sunlight per day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Daily hours of sunshine
Daily percentage of sunshine
Humidity in Chemainus by Month
The relative humidity is high throughout the year in Chemainus.
The city experiences its highest humidity in January, reaching 81%. In July, the humidity drops to its lowest level at 61%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Chemainus
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: June, July, August and September
- Warmest weather: July and August
- Most sunshine: July and August
- Fewest rainy days: July and August
- Seasonal pattern: A distinct rainy season from November to January, with warm summers and cold winters
Frequently asked questions about the climate in Chemainus
What is the best time to visit Chemainus?
June, July, August and September typically offer the most optimal weather in Chemainus. In contrast, January, February, March, November and December tend to have less optimal conditions. Chemainus has a distinct rainy season from November to January, with warm summers and cold winters.
What temperatures can I expect in Chemainus?
Daytime highs range from 7°C (45°F) in December to 25°C (77°F) in July. Nighttime lows range from 2°C (36°F) to 14°C (57°F). Temperatures vary considerably through the year.
How much rain does Chemainus get?
Annual rainfall is around 1428 mm (56 in). November is the wettest month with 203 mm (8 in), while July is the driest with 36 mm (1.4 in).
How sunny is Chemainus?
Chemainus receives around 1,932 hours of sunshine per year. July is the sunniest month with 289 hours, while December is the cloudiest with just 56 hours.
Chemainus 3-Day Forecast
Chemainus on the map
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