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Laval (QC) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Laval.
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Climate overview of Laval
The climate in Laval, Quebec, Canada, is marked by large temperature swings across the seasons, ranging from 27°C (81°F) in July to -4°C (25°F) in January.
The city has a wet climate, receiving around 1136 mm (45 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. October is the wettest month. The sunniest month is July, with 9.1 hours of sunshine per day on average.
Laval Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Laval - and find the best time to visit.
Monthly Temperature in Laval
In Laval, temperatures differ significantly between summer and winter months. On average, daytime temperatures range from a comfortable 27°C (81°F) in July to a very cold -4°C (25°F) in January.
Nighttime temperatures range from 16°C (61°F) in July to -14°C (7°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Laval
Laval experiences significant rain/snowfall throughout the year, averaging 1136 mm (45 in) of precipitation annually. The wettest period in Laval occurs in October, which receives around 111 mm (4.4 in) of precipitation. During the driest month, February, Laval experiences moderate snowfall, totaling 73 mm (2.9 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Laval 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 Laval
In Laval, summer days are longer and more sunny, with daily sunshine hours peaking at 9.1 hours in July. As the darker season arrives, the brightness of the sun becomes less. December sees a soft sun for only 2.7 hours per average day.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Montréal, Canada (17 KM, 10 Miles).
Daily hours of sunshine
Data from: Montréal, Canada (17 KM, 10 Miles).
Daily percentage of sunshine
Data from: Montréal, Canada (17 KM, 10 Miles).
Water Temperature in Laval
The mean water temperature over the year ranges from 3°C (37°F) in February to 21°C (70°F) in August.
Water temperature over the year
Data from: Montréal, Canada (17 KM, 10 Miles).
Humidity in Laval by Month
The relative humidity is high throughout the year in Laval.
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
Data from: Montréal, Canada (17 KM, 10 Miles).
Wind Speed in Laval
The average wind speed over the year ranges from 5 m/s (10 knots) to 7 m/s (14 knots). It is lower in June, July, August and September and higher in January, February, March and December. What does this mean?
The mean monthly wind speed over the year (meters per second)
Data from: Montréal, Canada (17 KM, 10 Miles).
Best Time to Visit Laval
For comfortable weather, consider visiting Laval in May, July, August and September. Conditions are usually least favourable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
very cold
Mar
cold
Apr
wet
May
excellent
Jun
very good
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
cold
Dec
cold
- Best overall: May, July, August and September
- Warmest weather: July and August
- Most sunshine: July
- Best for swimming: August and September.
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -14°C (7°F).
Frequently asked questions about the climate in Laval
What is the best time to visit Laval?
May, July, August and September typically offer the most optimal weather in Laval. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Laval has warm summers and very cold winters.
What temperatures can I expect in Laval?
Daytime highs range from -4°C (25°F) in January to 27°C (81°F) in July. Nighttime lows range from -14°C (7°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Laval get?
Annual rainfall is around 1136 mm (45 in). October is the wettest month with 111 mm (4.4 in), while February is the driest with 73 mm (2.9 in).
How sunny is Laval?
Laval 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, Laval enjoys abundant sunshine.
Laval 3-Day Forecast
Laval on the map
Laval is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
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22°C (72°F) Ottawa22°C (72°F) Quebec City
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