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Calgary Weather in August
August in Calgary brings high temperatures, with highs of 24°C (75°F) and nights dropping to 8°C (46°F). Rainfall is on the higher side this month, averaging around 69 mm (2.7 in), so keep a rain jacket handy.
Rainfall in Calgary in August
Historically, the month has about 9 days of rain, averaging 69 mm (2.7 in) in total. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Calgary in August
The excellent temperature in Calgary in August makes it a solid month to visit, with 24°C (75°F) during the day and 8°C (46°F) at night. The summer season takes place during August. Conditions stay fairly consistent through the month, making it easier to plan what to wear. At 8°C (46°F) overnight, it gets properly cold after dark. On the bright side, cold nights tend to make for excellent sleeping conditions.
Sunshine in Calgary in August
Expect sunny days throughout the month, with an estimated 282 hours of sunshine. This makes it a pleasant time to visit Calgary.If you favor pleasant temperatures and minimal rainfall, August is one of the best months to visit Calgary.
Calgary Temperature in August
Min Temperature
8°C (46°F)
Max Temperature
24°C (75°F)
Chance of Rain
30%
Precipitation
69 mm (2.7 in)
Rainy days
9 days
Humidity
46%
Sunshine
282 hours
Percentage Sunshine
62%
Calgary Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Calgary - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Calgary typically stay consistent throughout August, with daily highs averaging around 24°C (75°F). Nights are cool, with lows typically ranging from 8°C (46°F) to 12°C (54°F).
Average temperatures in August
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in August
Historical weather records for Calgary in August
Browse day-by-day weather records for Calgary spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Calgary historical weather extremes in August
Based on 50 years of weather observations in Calgary between 1976 and 2026, these are the recorded extremes.
- The hottest August day on record in Calgary reached 36°C (97°F) (August 10, 2018).
- Calgary registered its coldest August night on August 25, 1992, with temperatures dropping to -3°C (27°F).
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 Calgary in August
For Calgary in August, you'll want flexible clothing. It's wise to pack cotton shirts, comfortable shorts, and a pair of jeans for cooler evenings. A light sweater or jacket is useful for air-conditioned spaces (like buses) or unexpected cool moments. Rain is likely on several days, so bring a good rain jacket. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.
What To Do in Calgary in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming9/10 -
Cycling10/10 -
Walking10/10 -
Barbeque8/10 -
Camping4/10 -
Outdoor sports10/10
Calgary 3-Day Forecast
More climate data for Calgary
Temperature Rainfall Sunshine Humidity
See the full Calgary 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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