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Cornwall Weather in August
With daytime temperatures of 24°C (75°F) and nighttime lows of 16°C (61°F), August in Cornwall brings high temperatures during the day. Do keep in mind that quite a bit of rainfall is typical. Around 85 mm (3.3 in) falls on average.
Rainfall in Cornwall in August
You can expect rain on around 12 days based on historical patterns, with 85 mm (3.3 in) average for the month. Individual showers can be quite heavy this month. A proper umbrella or rain jacket is worth having.
Temperature in Cornwall in August
Cornwall in August has excellent weather. Days reach 24°C (75°F) and nights cool to 16°C (61°F). During August, the summer season is in full swing. The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. Nights drop to around 16°C (61°F), which is noticeably cooler than the daytime. A light jacket for the evening is a sensible addition, and the cool nights tend to make sleeping comfortable.
Sunshine in Cornwall in August
The city usually sees around 221 hours of sunlight, indicating many sunny days , a great month for sightseeing.If you're inclined towards comfortable temperatures and drier conditions, August is a good time to visit Cornwall.
Cornwall Temperature in August
Min Temperature
16°C (61°F)
Max Temperature
24°C (75°F)
Chance of Rain
39%
Precipitation
85 mm (3.3 in)
Rainy days
12 days
Sunshine
221 hours *
Percentage Sunshine
50% *
* Data from: Charlottetown, Canada (6 KM, 4 Miles).
Cornwall Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Cornwall - and find the best time to visit.
Best Places in Canada in August
Find out more about the weather in Canada and which places have the best travel conditions in this month. See all of Canada in August →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Cornwall in August
Pleasant temperatures in August mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Prepare for significant rainfall with proper waterproof clothing and shoes. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Cornwall in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling9/10 -
Walking9/10 -
Barbeque8/10 -
Camping8/10 -
Outdoor sports9/10
Cornwall 3-Day Forecast
More climate data for Cornwall
See the full Cornwall climate overview or explore weather in Canada.
Popular in August
Where to go in August - average daytime high across popular destinations.
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