Longueuil Weather in September

What's the weather like in Longueuil (Quebec) in September 2024?

The climate in Longueuil during September can be summarized as mild and a little damp.

September is in the fall / autumn in Longueuil and is typically the 4th warmest month of the year. Daytime maximum temperatures average around 20°C (67°F), whilst at night 10°C (50°F) is normal.

Longueuil weather averages (imperial / metric)
Daytime temperature 19.6°C 67.3°F
Nightly temperature 10.2°C 50.4°F
Average temperature 14.9°C 58.8°F
Daily sunshine 6.3 hrs
Avg rainfall 94 mm 3.7 ins
Rainy days 12 days
Sea temperature 15.1°C 59.2°F
Humidity 76%
Windspeed 11.5kph 7 mph

On average September is the 4th wettest month of the year in Longueuil with around 94mm 3.7 inches of rain making it a a little damp time to visit. This rainfall is typically spread over 12 days, although this may vary considerably.

On the flip side this corresponds to an average of 6.3 hours of sunshine per day.

September temperatures in Longueuil

Longueuil average temperature in September

September rainfall

Longueuil average rain in September

September hourly sunshine

Longueuil average rain in September

The data used in these monthly averages covers a period of over 100 years right up until last year. As such they are a valid prediction of what to expect for the weather in Longueuil in September 2024.

Other monthly averages

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Longueuil weather stats

Longueuil weather statistics
Hottest month: July 26.4°C 79.5°F
Driest month: February 63mm 2.5ins
Sunniest month: July 9.3hrs
Coldest month: January -6°C 21.2°F
Wettest month: August 101mm 4ins
Map showing location of Longueuil (45.53121, -73.51806) Longueuil map pin © Google

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