May Weather in Caledon, Canada

Last updated: June 18, 2025

In May, the average temperature in Caledon, Canada is a mild 13°C (55°F), though it can swing from a chilly -3°C (26°F) to a warm 32°C (89°F). Expect a fair amount of rain with 97 mm (3.8 in) of precipitation spread over 13 days, while the air remains quite humid, averaging at 82%.

May Temperature in Caledon

In May in Caledon, the average temperature is 13°C (55°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as -3°C (26°F). This varied climate makes Caledon an intriguing destination for travelers seeking both warm and cool experiences.

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

The chart illustrates May temperature patterns in Caledon, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Caledon, May typically has an average temperature of 13°C (55°F), with highs reaching up to 32°C (89°F) and lows dropping to around -3°C (26°F).

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

May Precipitation in Caledon

In Caledon in May, the precipitation amount is 97 mm (3.8 in) over the course of 13 days.

May Precipitation Trends in Caledon

The chart displays monthly precipitation patterns in Caledon, 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 Caledon, May typically receives around 97 mm (3.8 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 Caledon

In Caledon in May, humidity is 82%. With an average temperature of 13°C (55°F), this humidity feels like a heavy blanket wrapping around you, making outdoor activities sticky and uncomfortable for traveling.

May Average Humidity in Caledon

This chart illustrates the average monthly humidity levels in Caledon, 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 Caledon is approximately 82%, 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 Caledon

In Caledon 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 Caledon.

Maximum UV Index Levels in Caledon for May

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

Data source: Caledon 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 Caledon Compares to Other Months

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

This table compares monthly weather conditions in Caledon, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-5°C (22°F)	66 mm (2.6 inches)	90%	low
February Weather	-5°C (24°F)	70 mm (2.8 inches)	90%	moderate
March Weather	0°C (32°F)	59 mm (2.3 inches)	87%	moderate
April Weather	5°C (42°F)	105 mm (4.1 inches)	87%	very high
May Weather	13°C (55°F)	97 mm (3.8 inches)	82%	very high
June Weather	19°C (66°F)	103 mm (4.0 inches)	81%	very high
July Weather	21°C (71°F)	84 mm (3.3 inches)	79%	very high
August Weather	20°C (69°F)	97 mm (3.8 inches)	80%	very high
September Weather	16°C (62°F)	71 mm (2.8 inches)	81%	high
October Weather	10°C (50°F)	101 mm (4.0 inches)	84%	moderate
November Weather	2°C (36°F)	75 mm (3.0 inches)	88%	moderate
December Weather	-2°C (29°F)	70 mm (2.7 inches)	87%	low