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Cornwall (PE) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cornwall.
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Climate overview of Cornwall
Temperatures in Cornwall, Prince Edward Island, Canada, vary greatly throughout the year. July is the hottest month at 24°C (75°F), while February is the coldest at -2°C (28°F).
The city receives considerable rain/snowfall, with around 1140 mm (45 in) annually. December is the wettest month. It has warm summers and very cold winters. July is the sunniest month, averaging 8.5 hours of sunshine per day.
Cornwall Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cornwall - and find the best time to visit.
Monthly Temperature in Cornwall
The climate in Cornwall is known for significant temperature differences throughout the year, making the weather dynamic. Typically, average maximum daytime temperatures range from a comfortable 24°C (75°F) in July to a very cold -2°C (28°F) in the coolest month, February.
Nights vary from 16°C (61°F) in July to around -10°C (14°F) during the colder months.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in Cornwall
Cornwall has a notably wet climate with abundant precipitation, recording 1140 mm (45 in) of rain/snowfall per year. Precipitation levels in Cornwall remain relatively steady throughout the year. December has the most snow/rain, with 118 mm (4.6 in) over 19 days. In the driest month July, this drops slightly to 78 mm (3.1 in), making the city's climate fairly predictable. For more details, please visit our Cornwall Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Sunshine Hours in Cornwall
For those who appreciate different seasons, Cornwall serves as an ideal destination. Expect longer, more sun-filled days in July with an average of 8.5 hours of sunshine daily, and embrace the darker days in November, offering only 2.1 hours of daily sunlight.
Visit our detailed sunshine hours page for more information.
Monthly hours of sunshine
Data from: Charlottetown, Canada (6 KM, 4 Miles).
Daily hours of sunshine
Data from: Charlottetown, Canada (6 KM, 4 Miles).
Daily percentage of sunshine
Data from: Charlottetown, Canada (6 KM, 4 Miles).
Best Time to Visit Cornwall
The most comfortable overall weather for exploring Cornwall is usually found in June, July and August. 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
good
Jun
excellent
Jul
excellent
Aug
excellent
Sep
very good
Oct
mixed
Nov
wet
Dec
cold
- Best overall: June, July and August
- Warmest weather: July and August
- Most sunshine: July
- Seasonal pattern: Warm summers and very cold winters
- Coldest conditions: February, with freezing nights around -10°C (14°F).
Frequently asked questions about the climate in Cornwall
What is the best time to visit Cornwall?
June, July and August typically offer the most optimal weather in Cornwall. In contrast, January, February, March, April, November and December tend to have less optimal conditions. Cornwall has warm summers and very cold winters.
What temperatures can I expect in Cornwall?
Daytime highs range from -2°C (28°F) in February to 24°C (75°F) in July. Nighttime lows range from -10°C (14°F) to 16°C (61°F). Temperatures vary considerably through the year.
How much rain does Cornwall get?
Annual rainfall is around 1140 mm (45 in). December is the wettest month with 118 mm (4.6 in), while July is the driest with 78 mm (3.1 in). In the coldest months, precipitation may fall as snow/rain.
How sunny is Cornwall?
Cornwall receives around 1,853 hours of sunshine per year. July is the sunniest month with 254 hours, while November is the cloudiest with just 64 hours.
Cornwall 3-Day Forecast
Cornwall on the map
Cornwall is highlighted - select any city to see its climate.
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