Saint-Jean Weather in September
Saint-Jean in September averages 20°C (68°F) during the day and 8°C (46°F) at night. Keep in mind that quite a bit of rainfall is expected this month.
Rainfall in Saint-Jean in September
You can expect rain on around 14 days based on historical patterns, with 117 mm (4.6 in) average for the month. When it rains this month, it tends to come down fairly heavily. Showers can be substantial even if they don't last all day.
Temperature in Saint-Jean in September
If you're visiting Saint-Jean in September, expect highs of 20°C (68°F) and overnight lows around 8°C (46°F). This creates a mild day-to-night pattern that is generally easy to manage with the right clothing. With overnight lows of 8°C (46°F), nights are cold. The cold air does make for deep, comfortable sleep if you have enough blankets.
Sunshine in Saint-Jean in September
The month experiences a moderate amount of sunlight, with 163 hours of sunshine. This provides a nice balance between sunshine and clouds.Our weather planner can help you find worldwide destinations with pleasant weather during this period. June, July, August and September typically offer the best weather for Saint-Jean.
Saint-Jean Temperature in September
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Saint-Jean Weather by Month
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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 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 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. Sunglasses could come in handy during the sunnier parts of your trip.
What To Do in Saint-Jean 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 -
Camping3/10 -
Outdoor sports9/10
Saint-Jean 3-Day Forecast
Temperature Rainfall Sunshine Humidity
See the full Saint-Jean 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) 
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