Mississauga Weather in August
August in Mississauga brings high temperatures, with daytime highs of 26°C (79°F) and nights around 17°C (63°F). Quite a bit of rainfall is expected, around 69 mm (2.7 in), so pack an umbrella.
Rainfall in Mississauga in August
Rain is expected on roughly 9 days, totalling around 69 mm (2.7 in) for the month. Rainfall intensity is on the higher side this month. Expect more substantial showers rather than light, passing rain.
Temperature in Mississauga in August
Mississauga in August has perfect weather. Days reach 26°C (79°F) and nights cool to 17°C (63°F). The summer season takes place during August. Overall, the month follows a fairly predictable daily temperature pattern. At 17°C (63°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Mississauga in August
Expect a lot of sunshine this month, with about 276 hours of sun. These sunny conditions add to the overall experience.So this is a great month to visit if you prefer dry days with pleasant temperatures.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mississauga's climate page.
Mississauga Temperature in August
Min Temperature
17°C (63°F)
Max Temperature
26°C (79°F)
Chance of Rain
31%
Precipitation
69 mm (2.7 in)
Rainy days
9 days
Humidity
56%
Sunshine
276 hours
Percentage Sunshine
64%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Mississauga typically stay consistent throughout August, with daily highs averaging around 26°C (79°F). Nights are pleasant, with lows typically ranging from 15°C (59°F) to 18°C (64°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 for Mississauga in August
Browse day-by-day weather records for Mississauga spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Mississauga historical weather extremes in August
Based on 49 years of weather observations (1976-2025), these are the most extreme conditions recorded in Mississauga.
- The hottest August day on record in Mississauga reached 36°C (97°F) (August 8, 2001).
- The lowest daytime temperature in August was 14°C (57°F), recorded on August 28, 1986.
- The lowest overnight temperature recorded in August was 2°C (36°F) (August 29, 1982).
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 →
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What to Wear in Mississauga in August
Warm but pleasant conditions in Mississauga in August. Focus on lightweight, maybe with natural fabrics, cotton blend shirts, comfortable shorts, and breathable footwear. A light cover-up for sun protection is smart too. Wet weather is likely, so pack waterproof gear for multiple rainy days. You'll definitely want to pack sunglasses and sunscreen. There will be plenty of bright sunshine this month.What To Do in Mississauga in August
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Canada, check out our Mississauga's climate page.
Temperature Rainfall Sunshine Humidity
See the full Mississauga climate overview or explore weather in Canada.
