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St. Peter's Weather in September
September in St. Peter's brings pleasant temperatures, with daytime highs of 20°C (68°F) and nights around 13°C (55°F). Quite a bit of rainfall is expected, around 112 mm (4.4 in), so pack an umbrella.
Rainfall in St. Peter's in September
You can typically expect 10 days of rain this month, averaging around 112 mm (4.4 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in St. Peter's in September
If you're visiting St. Peter's in September, expect highs of 20°C (68°F) and overnight lows around 13°C (55°F). September marks the summer season. Temperatures can feel cooler in the morning and evening, so layering is often the best approach. At 13°C (55°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.So this is a great month to visit if you prefer dry days with pleasant temperatures.
St. Peter's Temperature in September
Min Temperature
13°C (55°F)
Max Temperature
20°C (68°F)
Chance of Rain
32%
Precipitation
112 mm (4.4 in)
Rainy days
10 days
St. Peter's Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in St. Peter's - 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 St. Peter's in September
For St. Peter's in September, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. High rain levels are expected, so pack waterproof gear and an umbrella or poncho.
What To Do in St. Peter's in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping6/10 -
Outdoor sports9/10
St. Peter's 3-Day Forecast
More climate data for St. Peter's
See the full St. Peter's 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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