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Port Severn (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Port Severn.
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Climate overview of Port Severn
Port Severn, Ontario, Canada, experiences significant temperature variation throughout the year. Summers bring daytime highs of 25°C (77°F) in July, while winters cool to -3°C (27°F) in January.
The city has a wet climate, receiving around 1046 mm (41 in) of rain/snowfall per year. Despite the high annual total, it has warm summers and very cold winters. October is the wettest month.
Port Severn Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Port Severn - and find the best time to visit.
Monthly Temperature in Port Severn
Depending on the time of the year, temperatures range from comfortable to very cold in Port Severn. On average, daytime temperatures range from a comfortable 25°C (77°F) in July to a very cold -3°C (27°F) in January.
Nighttime temperatures range from 17°C (63°F) in July to -11°C (12°F) in January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Port Severn
Port Severn has a relatively rain/snowy climate with high precipitation levels, averaging 1046 mm (41 in) of rain/snowfall annually. The wettest period in Port Severn occurs in October, which receives around 101 mm (4 in) of precipitation. During the driest month, February, Port Severn experiences moderate snowfall, totaling 65 mm (2.6 in). The consistent precipitation levels throughout the year contribute to a relatively stable climate. For more details, please visit our Port Severn 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 Port Severn
Conditions in Port Severn are generally most comfortable in June, July and September. They are typically 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
very good
Sep
excellent
Oct
mixed
Nov
cold
Dec
cold
- Best overall: June, July and September
- Warmest weather: July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -11°C (12°F).
Frequently asked questions about the climate in Port Severn
What is the best time to visit Port Severn?
June, July and September typically offer the most optimal weather in Port Severn. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Port Severn has warm summers and very cold winters.
What temperatures can I expect in Port Severn?
Daytime highs range from -3°C (27°F) in January to 25°C (77°F) in July. Nighttime lows range from -11°C (12°F) to 17°C (63°F). Temperatures vary considerably through the year.
How much rain does Port Severn get?
Annual rainfall is around 1046 mm (41 in). October is the wettest month with 101 mm (4 in), while February is the driest with 65 mm (2.6 in).
Port Severn 3-Day Forecast
Port Severn on the map
Port Severn is highlighted - select any city to see its climate.
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