May Weather in Duncan, Canada

Last updated: June 18, 2025

In May, the average temperature in Duncan, Canada hovers around 12°C (55°F). Expect a cool minimum of 1°C (34°F) and a warm maximum of 27°C (81°F). During this time, you'll likely encounter 54 mm (2.1 in) of precipitation over 10 days, with an average humidity level of 81%. Whether you're exploring or relaxing, be prepared for a mix of weather!

May Temperature in Duncan

In May in Duncan, the average temperature is 12°C (55°F), with maximums reaching 27°C (81°F) and minimums dropping as low as 1°C (34°F). It's a great time to visit for those who enjoy mild weather and are prepared for some temperature variations.

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

The chart illustrates May temperature patterns in Duncan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Duncan, May typically has an average temperature of 12°C (55°F), with highs reaching up to 27°C (81°F) and lows dropping to around 1°C (34°F).

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

May Precipitation in Duncan

In Duncan in May, the total precipitation amount is 54 mm (2.1 in) over the course of 10 days.

May Precipitation Trends in Duncan

The chart displays monthly precipitation patterns in Duncan, 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 Duncan, May typically receives around 54 mm (2.1 inches) of precipitation spread over approximately 10 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 Duncan

In Duncan in May humidity is 81%. With an average temperature of 12°C (55°F), this humidity feels like a damp blanket enveloping you, making outdoor activities feel heavier and encouraging frequent breaks to hydrate and cool off while traveling.

May Average Humidity in Duncan

This chart illustrates the average monthly humidity levels in Duncan, 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 Duncan is approximately 81%, 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 Duncan

In Duncan 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 Duncan.

Maximum UV Index Levels in Duncan for May

The chart shows the monthly maximum UV Index (UVI) for Duncan 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 Duncan typically reaches 8, which falls under the very high exposure category.

Data source: Duncan 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 Duncan Compares to Other Months

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

This table compares monthly weather conditions in Duncan, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (38°F)	215 mm (8.5 inches)	86%	low
February Weather	2°C (36°F)	131 mm (5.2 inches)	85%	moderate
March Weather	5°C (41°F)	118 mm (4.6 inches)	86%	moderate
April Weather	8°C (47°F)	111 mm (4.4 inches)	86%	high
May Weather	12°C (55°F)	54 mm (2.1 inches)	81%	very high
June Weather	15°C (60°F)	48 mm (1.9 inches)	83%	very high
July Weather	18°C (65°F)	18 mm (0.7 inches)	84%	very high
August Weather	19°C (66°F)	24 mm (1.0 inches)	77%	very high
September Weather	15°C (59°F)	120 mm (4.7 inches)	76%	high
October Weather	9°C (49°F)	151 mm (6.0 inches)	88%	moderate
November Weather	6°C (43°F)	245 mm (9.6 inches)	87%	low
December Weather	3°C (37°F)	214 mm (8.4 inches)	87%	low