Climate Insights for Winnipeg

The climate in Winnipeg is cool. The average annual temperature is 5°C and approximately 838mm of precipitation falls per year. September is the wettest month, receiving around 129mm of rainfall. Winnipeg is in the Northern Hemisphere. Summer begins at the end of June and lasts through September. The summer months are: August, July, June. The coldest months are January, December, February, when temperatures can drop to -17°C. Snowfall occurs from January to December, with around 156cm accumulating over the season.

Winnipeg has a wide annual temperature range, spanning 43°C from the coldest to warmest months. The warmest month is August, when average highs reach 26°C and the mean temperature sits around 19°C. January brings the harshest conditions, with lows dropping to -17°C and an average temperature of -14°C. On average, daily temperatures fluctuate by about 9°C between overnight lows and afternoon highs. The sharpest temperature change occurs between November and December, with a 16°C shift in average temperatures.

Winnipeg is a moderately rainy area, receiving approximately 838mm of precipitation annually, which averages out to around 70mm per month. The wettest month is September, averaging 129mm of rainfall. July and June also tend to see above-average precipitation. The driest month is January, with just 14mm. That's 115mm less than September, the wettest month. Rainfall is heavily concentrated in certain months, creating a distinct wet and dry season. Visitors should plan around these patterns, as the difference between peak and low months is dramatic. Snowfall is a regular feature from January to December, with around 156cm accumulating over the season. December typically sees the most snow at around 69cm.

Winnipeg is relatively calm, with an average annual wind speed of 4km/h. For context, sustained winds below 12km/h are generally light, while anything above 25km/h is considered strong. The windiest month is December, averaging 5km/h, though still comfortable for most outdoor activities. The calmest conditions occur in July, with average winds dropping to 4km/h, making it an ideal period for wind-sensitive activities. Wind conditions are fairly consistent throughout the year, varying by only 1km/h between the calmest and windiest months.

It is currently summer in Winnipeg, which began on June 21, 2026. Winnipeg is in the Northern Hemisphere, where spring begins in March, summer in June, autumn in September, and winter in December. The warmest period peaks in August at around 26°C, while the coldest stretch bottoms out in January near -17°C. Autumn is next, beginning on September 23, 2026 — 52 days from now.

The best time to visit Winnipeg is during August, when the weather is most comfortable for travellers. During these months, average temperatures hover around 19°C with modest rainfall averaging 79mm per month. By contrast, January can be quite cold with temperatures dropping to -17°C. Despite being the best months overall, some rain is still likely — pack a waterproof layer and plan a mix of indoor and outdoor activities.

The table below shows monthly climate averages for Winnipeg based on historical weather data. Min and max temperatures represent typical overnight lows and afternoon highs for each month, shown in degrees Celsius (°C). Precipitation is measured in millimetres (mm) and indicates the average total rainfall per month. Snow is measured in centimetres (cm) and reflects average monthly snowfall accumulation. Wind speed is the average sustained speed in kilometres per hour (km/h). All values are based on averages from over 10 years of historical weather data. The current month is highlighted for quick reference.