Mattawa Weather in September
What's the weather like in Mattawa (Ontario) in September 2024?
The climate in Mattawa during September can be summarized as mild and damp.
September is in the fall / autumn in Mattawa and is typically the 4th warmest month of the year. Daytime maximum temperatures average around a cool 18°C (65°F), whilst at night 7°C (44°F) is normal.
| Daytime temperature | 18.2°C 64.7°F |
|---|---|
| Nightly temperature | 6.9°C 44.3°F |
| Average temperature | 12.5°C 54.5°F |
| Daily sunshine | 5.4 hrs |
| Avg rainfall | 102 mm 4 ins |
| Rainy days | 13 days |
| Sea temperature | 15.3°C 59.5°F |
| Humidity | 80% |
| Windspeed | 11.9kph 7 mph |
On average September is the 2nd wettest month of the year in Mattawa with around 102mm 4 inches of rain making it a damp time to visit. This rainfall is typically spread over 13 days, although this may vary considerably.
On the flip side this corresponds to an average of 5.4 hours of sunshine per day.
September temperatures in Mattawa
September rainfall
September hourly sunshine
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 Mattawa in September 2024.
Other monthly averages
Best places to visit in September
Mattawa weather stats
| Hottest month: | July | 25°C 77°F |
|---|---|---|
| Driest month: | March | 54mm 2.1ins |
| Sunniest month: | July | 9.5hrs |
| Coldest month: | January | -7.4°C 18.7°F |
| Wettest month: | August | 104mm 4.1ins |
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