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Orillia (ON) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Orillia.
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Climate overview of Orillia
Orillia, Ontario, Canada, sees big temperature differences between seasons, with July peaking at 26°C (79°F) and January dropping to -3°C (27°F).
Rain/snowfall is high, totalling around 1038 mm (41 in) per year. June is the wettest month and February the driest. The city also experiences warm summers and very cold winters.
Orillia Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Orillia - and find the best time to visit.
Monthly Temperature in Orillia
Visitors to Orillia can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a comfortable 26°C (79°F) in July, the warmest time of the year, to a very cold -3°C (27°F) during cooler months like January.
At night, you can expect temperatures ranging from 16°C (61°F) in July to around -12°C (10°F) during January.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Orillia
Orillia is known for its substantial rain/snowfall, with annual precipitation reaching 1038 mm (41 in). Year-round, Orillia has a balanced climate with minimal variation in precipitation. The difference between the wettest month, June, with 103 mm (4.1 in), and the driest month, February, with 65 mm (2.6 in), is minimal. For more details, please visit our Orillia 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 Orillia
The most comfortable overall weather for exploring Orillia is usually found in May, July, August and September. Conditions are generally least comfortable in January, February, March, 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
mixed
May
excellent
Jun
very good
Jul
excellent
Aug
excellent
Sep
excellent
Oct
good
Nov
cold
Dec
cold
- Best overall: May, July, August and September
- Warmest weather: July and August
- Fewer rainy days: April, May, June, July and August
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: January, with freezing nights around -12°C (10°F).
Frequently asked questions about the climate in Orillia
What is the best time to visit Orillia?
May, July, August and September typically offer the most optimal weather in Orillia. In contrast, January, February, March, November and December tend to have less optimal conditions. Orillia has warm summers and very cold winters.
What temperatures can I expect in Orillia?
Daytime highs range from -3°C (27°F) in January to 26°C (79°F) in July. Nighttime lows range from -12°C (10°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Orillia get?
Annual rainfall is around 1038 mm (41 in). June is the wettest month with 103 mm (4.1 in), while February is the driest with 65 mm (2.6 in).
Orillia 3-Day Forecast
Orillia on the map
Orillia is highlighted - select any city to see its climate.
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