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Mattawa Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Mattawa.
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Climate overview of Mattawa
Temperatures in Mattawa, Canada, vary greatly throughout the year. July is the hottest month at 26°C (79°F), while January is the coldest at -6°C (21°F).
The city receives around 987 mm (39 in) of rain/snowfall per year. It experiences warm summers and very cold winters. September is the wettest month and February the driest.
Mattawa Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Mattawa - and find the best time to visit.
Monthly Temperature in Mattawa
The climate in Mattawa is known for significant temperature differences throughout the year, making the weather dynamic. On average, daytime temperatures range from a comfortable 26°C (79°F) in July to a very cold -6°C (21°F) in January.
Nighttime temperatures range from 13°C (55°F) in July to -17°C (1°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Mattawa
Generally, Mattawa receives mid-range precipitation levels, with 987 mm (39 in) annually. The amount of precipitation varies moderately throughout the year. The wettest month, September, sees around 98 mm (3.9 in) of rainfall, perfect for those who enjoy a bit of rain now and then. The driest month, February, still receives a respectable 59 mm (2.3 in) of snowfall. For more details, please visit our Mattawa Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit Mattawa
The most comfortable overall weather for exploring Mattawa is usually found in June, July, August and September. Conditions are generally least comfortable in January, February, March, April, November and December.
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
Jan
very cold
Feb
very cold
Mar
cold
Apr
cold
May
very good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
excellent
Oct
mixed
Nov
cold
Dec
very cold
- Best overall: June, July, August and September
- Warmest weather: July and August
- Fewer rainy days: February, March, April, May and July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -17°C (1°F).
Frequently asked questions about the climate in Mattawa
What is the best time to visit Mattawa?
June, July, August and September typically offer the most optimal weather in Mattawa. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Mattawa has warm summers and very cold winters.
What temperatures can I expect in Mattawa?
Daytime highs range from -6°C (21°F) in January to 26°C (79°F) in July. Nighttime lows range from -17°C (1°F) to 13°C (55°F). Temperatures vary considerably through the year.
How much rain does Mattawa get?
Annual rainfall is around 987 mm (39 in). September is the wettest month with 98 mm (3.9 in), while February is the driest with 59 mm (2.3 in).
Mattawa 3-Day Forecast
Mattawa on the map
Mattawa is highlighted - select any city to see its climate.
Popular in September
Where to go in September - average daytime high across popular destinations.
Toronto
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