Cornwall (PE) Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit Cornwall.
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. 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
Daily hours of sunshine
Daily percentage of sunshine
Best Time to Visit Cornwall
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.
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 (PE) 3-Day Forecast
Cornwall on the map
Cornwall is highlighted — select any city to see its climate.
Popular this month
Where to go in June — average daytime high across popular destinations.
Montréal
25°C (77°F) Niagara Falls
25°C (77°F) Ottawa25°C (77°F) Quebec City
23°C (73°F) Toronto22°C (72°F) Calgary20°C (68°F) Vancouver19°C (66°F) Whistler15°C (59°F) 
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