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Saint-Jean-sur-Richelieu Weather in September
September in Saint-Jean-sur-Richelieu brings high temperatures around 22°C (72°F) during the day, dropping to 11°C (52°F) at night, with quite a bit of rainfall expected, averaging around 103 mm (4.1 in) for the month.
Rainfall in Saint-Jean-sur-Richelieu in September
On average, there are about 12 days with rain during this month, averaging 103 mm (4.1 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Saint-Jean-sur-Richelieu in September
September in Saint-Jean-sur-Richelieu brings typical temperatures with highs around 22°C (72°F) and lows of 11°C (52°F). Conditions stay fairly consistent through the month, making it easier to plan what to wear. Nights cool down to 11°C (52°F), so a light jacket or extra layer is useful once the sun goes down. On the plus side, the cooler nights make for comfortable sleeping conditions.
Sunshine in Saint-Jean-sur-Richelieu in September
The area experiences a moderate amount of sunshine, with approximately 183 hours of sunlight expected. This means a decent mix of sun and overcast.If you're a fan of comfortable temperatures and drier conditions, September is a great time to visit.
Saint-Jean-sur-Richelieu Temperature in September
Min Temperature
11°C (52°F)
Max Temperature
22°C (72°F)
Chance of Rain
40%
Precipitation
103 mm (4.1 in)
Rainy days
12 days
Humidity
60% *
Sunshine
183 hours *
Percentage Sunshine
49% *
* Data from: Montréal, Canada (33 KM, 20 Miles).
Saint-Jean-sur-Richelieu Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Saint-Jean-sur-Richelieu - and find the best time to visit.
Best Places in Canada in September
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Saint-Jean-sur-Richelieu in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Expect heavy rainfall, so bring good rain protection and waterproof bags. It won't hurt to bring your sunglasses along, as you'll see some sunny periods.
What To Do in Saint-Jean-sur-Richelieu in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
Saint-Jean-sur-Richelieu 3-Day Forecast
More climate data for Saint-Jean-sur-Richelieu
Temperature Rainfall Sunshine Humidity
See the full Saint-Jean-sur-Richelieu climate overview or explore weather in Canada.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
22°C (72°F) Niagara Falls23°C (73°F) Montréal
22°C (72°F) Ottawa22°C (72°F) Quebec City
20°C (68°F) Vancouver19°C (66°F) Calgary19°C (66°F) Whistler15°C (59°F) Bucket list
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