Saint-Denis-sur-Richelieu (QC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Saint-Denis-sur-Richelieu.
Climate overview of Saint-Denis-sur-Richelieu
Saint-Denis-sur-Richelieu, Quebec, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 27°C (81°F) in July, while winters cool to -4°C (25°F) in January.
With around 1161 mm (46 in) of annual rain/snowfall, Saint-Denis-sur-Richelieu has a notably wet climate. However, this rain/snowfall is not evenly distributed, the city has warm summers and very cold winters. The wettest month is October. Sunshine peaks in July, when the city sees around 9.1 hours of sunshine per day.
Saint-Denis-sur-Richelieu Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint-Denis-sur-Richelieu - and find the best time to visit.
Monthly Temperature in Saint-Denis-sur-Richelieu
Depending on the time of the year, temperatures range from comfortable to very cold in Saint-Denis-sur-Richelieu. Average daytime temperatures reach a comfortable 27°C (81°F) in July. In January, the coolest month of the year, temperatures drop to a very cold -4°C (25°F).
At night, temperatures range from around 16°C (61°F) in July to -15°C (5°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Saint-Denis-sur-Richelieu
Saint-Denis-sur-Richelieu has a relatively rain/snowy climate with high precipitation levels, averaging 1161 mm (46 in) of rain/snowfall annually. Despite minor fluctuations, Saint-Denis-sur-Richelieu enjoys fairly consistent precipitation throughout the year. In October, you can expect around 113 mm (4.4 in) of precipitation, while in February, Saint-Denis-sur-Richelieu receives about 73 mm (2.9 in). For more details, please visit our Saint-Denis-sur-Richelieu 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 Saint-Denis-sur-Richelieu
Saint-Denis-sur-Richelieu can be enjoyed more throughout the sunniest month of July under a blue sky, with approximately 9.1 hours of sunshine daily. In contrast, the city experiences much darker days in December, with only 2.7 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 Saint-Denis-sur-Richelieu by Month
The relative humidity is high throughout the year in Saint-Denis-sur-Richelieu.
The city experiences its highest humidity in December, reaching 71%. In May, the humidity drops to its lowest level at 51%. What does this mean? Read our detailed page on humidity levels for further details.
Relative humidity over the year
Best Time to Visit Saint-Denis-sur-Richelieu
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: May, June, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -15°C (5°F).
Frequently asked questions about the climate in Saint-Denis-sur-Richelieu
What is the best time to visit Saint-Denis-sur-Richelieu?
May, June, July, August and September typically offer the most optimal weather in Saint-Denis-sur-Richelieu. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Saint-Denis-sur-Richelieu has warm summers and very cold winters.
What temperatures can I expect in Saint-Denis-sur-Richelieu?
Daytime highs range from -4°C (25°F) in January to 27°C (81°F) in July. Nighttime lows range from -15°C (5°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Saint-Denis-sur-Richelieu get?
Annual rainfall is around 1161 mm (46 in). October is the wettest month with 113 mm (4.4 in), while February is the driest with 73 mm (2.9 in).
How sunny is Saint-Denis-sur-Richelieu?
Saint-Denis-sur-Richelieu receives around 2,042 hours of sunshine per year. July is the sunniest month with 272 hours, while December is the cloudiest with just 80 hours. Overall, Saint-Denis-sur-Richelieu enjoys abundant sunshine.
Saint-Denis-sur-Richelieu 3-Day Forecast
Saint-Denis-sur-Richelieu on the map
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