May Weather in Winnipeg, Canada

Last updated: June 18, 2025

In May, the average temperature in Winnipeg, Canada hovers around 12°C (54°F), making it a mildly cool period. Temperatures can swing from a chilly -6°C (22°F) to a warm 32°C (89°F), showcasing the region's variability. With an average precipitation of 35 mm (1.4 in) spread over about 7 days, expect a bit of rain, while the average humidity sits at a comfortable 74%. Stay prepared for all weather possibilities!

May Temperature in Winnipeg

In May in Winnipeg, the average temperature is 12°C (54°F). The maximum can reach 32°C (89°F), while the minimum can drop as low as -6°C (22°F). It’s important to pack for a range of temperatures when traveling during this time.

May Weather in Winnipeg: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Winnipeg, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Winnipeg, May typically has an average temperature of 12°C (54°F), with highs reaching up to 32°C (89°F) and lows dropping to around -6°C (22°F).

Data source: Temperature data for Winnipeg generated using information from the Copernicus Climate Change Service.

May Precipitation in Winnipeg

In Winnipeg in May, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.

May Precipitation Trends in Winnipeg

The chart displays monthly precipitation patterns in Winnipeg, with values for each month alongside May’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how May’s conditions compare to those of other months. In Winnipeg, May typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 7 days.

Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

May Humidity in Winnipeg

In Winnipeg in May, humidity is 74%. With an average temperature of 12°C (54°F), this humidity feels like a chilly embrace that can dampen your travel experience, making it essential to dress in layers and prepare for an unexpected drizzle while exploring the sights.

May Average Humidity in Winnipeg

This chart illustrates the average monthly humidity levels in Winnipeg, with May’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In May, average humidity in Winnipeg is approximately 74%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Winnipeg

In Winnipeg in May, the maximum UV index is 8, which corresponds to a very high Exposure Category. This means that the time to burn is only 15 minutes. For more detailed information, you can refer to the Hourly UV Index in Winnipeg.

Maximum UV Index Levels in Winnipeg for May

The chart shows the monthly maximum UV Index (UVI) for Winnipeg in May, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In May, the maximum UV index in Winnipeg typically reaches 8, which falls under the very high exposure category.

Data source: Winnipeg May UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How May Weather in Winnipeg Compares to Other Months

Weather in Winnipeg varies notably across the year, with each month offering distinct climate conditions. This page compares May’s weather to other months in Winnipeg, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Winnipeg, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-14°C (6°F)	18 mm (0.7 inches)	94%	low
February Weather	-16°C (4°F)	15 mm (0.6 inches)	91%	moderate
March Weather	-5°C (23°F)	18 mm (0.7 inches)	90%	moderate
April Weather	2°C (36°F)	29 mm (1.1 inches)	81%	high
May Weather	12°C (54°F)	35 mm (1.4 inches)	74%	very high
June Weather	19°C (66°F)	76 mm (3.0 inches)	75%	very high
July Weather	21°C (70°F)	61 mm (2.4 inches)	74%	very high
August Weather	19°C (67°F)	60 mm (2.4 inches)	77%	very high
September Weather	13°C (57°F)	97 mm (3.8 inches)	75%	high
October Weather	5°C (41°F)	57 mm (2.3 inches)	78%	moderate
November Weather	-5°C (24°F)	27 mm (1.1 inches)	87%	low
December Weather	-11°C (13°F)	24 mm (0.9 inches)	93%	low