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Mattawa Weather in September
In Mattawa, September brings pleasant daytime temperatures around 20°C (68°F), with nights cooling to 8°C (46°F). It is the wettest month of the year, so expect more rainfall than usual.
Rainfall in Mattawa in September
This is the wettest month of the year, so having an umbrella ready is a smart choice. Historically, September sees about 13 days of rain, with a monthly average of 98 mm (3.9 in). Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Mattawa in September
Mattawa in September has excellent weather. Days reach 20°C (68°F) and nights cool to 8°C (46°F). Conditions are often most pleasant around the middle of the day. 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.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Mattawa.
Mattawa Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
20°C (68°F)
Chance of Rain
44%
Precipitation
98 mm (3.9 in)
Rainy days
13 days
Mattawa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mattawa - 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 Mattawa in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes.
What To Do in Mattawa in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Mattawa 3-Day Forecast
More climate data for Mattawa
See the full Mattawa 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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