May Weather in Windsor, Canada

Last updated: June 18, 2025

In May, the average temperature in Windsor, Canada hovers around 12°C (55°F). Expect fluctuations with a minimum of -2°C (29°F) and a maximum reaching 34°C (93°F). Be prepared for some rain, as precipitation totals about 105 mm (4.1 in) over 13 days, contributing to an average humidity of 78%.

May Temperature in Windsor

In May in Windsor, the average temperature is 12°C (55°F), with maximums reaching 34°C (93°F) and minimums dipping as low as -2°C (29°F). Be sure to pack for a wide range of temperatures when traveling to Windsor this time of year!

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

The chart illustrates May temperature patterns in Windsor, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Windsor, May typically has an average temperature of 12°C (55°F), with highs reaching up to 34°C (93°F) and lows dropping to around -2°C (29°F).

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

May Precipitation in Windsor

In Windsor in May, the precipitation amount is 105 mm (4.1 in) over the course of 13 days.

May Precipitation Trends in Windsor

The chart displays monthly precipitation patterns in Windsor, 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 Windsor, May typically receives around 105 mm (4.1 inches) of precipitation spread over approximately 13 days.

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

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Millimeters (mm) Inches (in)

May Humidity in Windsor

In Windsor in May humidity is 78%. With average temperature 12°C (55°F), this humidity feels like a damp chill that wraps around you, making outdoor activities less enjoyable and travel a bit uncomfortable unless you're layered appropriately.

May Average Humidity in Windsor

This chart illustrates the average monthly humidity levels in Windsor, 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 Windsor is approximately 78%, 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 Windsor

In Windsor in May, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Windsor.

Maximum UV Index Levels in Windsor for May

The chart shows the monthly maximum UV Index (UVI) for Windsor 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 Windsor typically reaches 9, which falls under the very high exposure category.

Data source: Windsor 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 Windsor Compares to Other Months

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

This table compares monthly weather conditions in Windsor, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-8°C (17°F)	86 mm (3.4 inches)	91%	low
February Weather	-7°C (20°F)	82 mm (3.2 inches)	89%	moderate
March Weather	-2°C (28°F)	82 mm (3.2 inches)	85%	moderate
April Weather	5°C (42°F)	115 mm (4.5 inches)	84%	high
May Weather	12°C (55°F)	105 mm (4.1 inches)	78%	very high
June Weather	17°C (63°F)	130 mm (5.1 inches)	72%	very high
July Weather	20°C (68°F)	120 mm (4.7 inches)	75%	very high
August Weather	19°C (67°F)	123 mm (4.8 inches)	74%	very high
September Weather	15°C (59°F)	78 mm (3.1 inches)	77%	high
October Weather	9°C (48°F)	138 mm (5.4 inches)	85%	moderate
November Weather	1°C (33°F)	115 mm (4.5 inches)	86%	moderate
December Weather	-5°C (23°F)	83 mm (3.3 inches)	85%	low