Weather in Winnipeg in August 2025
- August is usually the hottest month of the year in Winnipeg;
Average weather
Average temperature in Winnipeg in August
Going from a maximum of +88°F during the day to a minimum of +46°F during the night, the temperature in August averages around +79°F.
The average maximum temperature goes down 4% by the end of the month, compared with the beginning of the month, from +84°F to +82°F.
Is Winnipeg warm or cold in August?
Winnipeg is typically warm in August.
Maximum temperatures go up compared to the previous month from +79°F to +79°F. The minimum temperature also goes down from +59°F to +55°F.
It’s generally warm, but pack a long-sleeve shirt for evenings.
August is the hottest month in Winnipeg, here is the comparison with other months:
Climate in Winnipeg in August
| July | August | September | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +79°F | +79°F | +68°F | ||||
| Min. temperature | ||||||
| +39°F | +32°F | +21°F | ||||
| Max. temperature | ||||||
| +99°F | +99°F | +99°F | ||||
| Rainfall | ||||||
| 91 mm | 83 mm | 61 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 4 m/s | ||||
| Humidity | ||||||
| 72% | 72% | 72% | ||||
| Air pressure | ||||||
| 1012 HPa | 1012 HPa | 1013 HPa | ||||
| Sunny days | ||||||
| 4 | 6 | 5 | ||||
| Cloudy days | ||||||
| 9 | 10 | 11 | ||||
| Rainy days | ||||||
| 16 | 14 | 13 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
August weather is still as good as in July. The temperature levels stay the same in the area of +79°F for average maximum temperature during the day. As August arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 91 mm to 83 mm. Humidity levels don’t change as the month goes on, averaging around 72%. The average wind speed doesn’t change much during August, staying around 3 m/s. The good news is there are likely to be more sunny days in August, from 4 to 6.
September brings much the same weather, it remains good.
Wind
The average wind speed is 3 m/s getting up to 8 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Winnipeg is gradually increasing during August, going from 4 m/s to 8 m/s over the course of the month.
Rain
How was the weather last August in Winnipeg?
Climate Change Over the Years
The climate in Winnipeg in August has not changed that much over the last 43 years.
The average temperature was the lowest in 1996 (+43°F) and the highest in 2021 (+53°F). The driest year was 1988 with only 222 mm of rainfall, and the wettest year was 2022 with 1095 mm.
FAQ
Is August a good time to visit Winnipeg?
Can you sunbathe in Winnipeg in August?
Is Winnipeg rainy in August?
Is it sunny in Winnipeg in August?
Other cities in Canada
Monthly weather in Winnipeg
Source of the data
For this page, we’ve looked at the typical weather in Winnipeg, based on historical hourly weather data from January 1, 1979, to December 31, 2022.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.