May Weather in Portneuf, Canada

Last updated: June 18, 2025

In Portneuf, Canada, the average temperature in May hovers around 12°C (54°F), making it a mild yet variable time of year. Temperatures can dip as low as -3°C (27°F) or soar to 33°C (92°F), showcasing the region's unpredictable climate. Expect about 107 mm (4.2 in) of precipitation over 14 days, with an average humidity level of 79% adding to the atmospheric richness of the season.

May Temperature in Portneuf

In May in Portneuf, the average temperature is 12°C (54°F). Maximum temperatures can reach 33°C (92°F), while minimums can drop as low as -3°C (27°F). This variation suggests that travelers should be prepared for both warm and chilly conditions during their visit.

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

The chart illustrates May temperature patterns in Portneuf, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Portneuf, May typically has an average temperature of 12°C (54°F), with highs reaching up to 33°C (92°F) and lows dropping to around -3°C (27°F).

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

May Precipitation in Portneuf

In Portneuf in May, the precipitation amount is 107 mm (4.2 in) spread over a period of 14 days.

May Precipitation Trends in Portneuf

The chart displays monthly precipitation patterns in Portneuf, 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 Portneuf, May typically receives around 107 mm (4.2 inches) of precipitation spread over approximately 14 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 Portneuf

In Portneuf in May, humidity is 79%. With an average temperature of 12°C (54°F), this humidity makes traveling feel quite muggy, leading to a sticky discomfort that can sap your energy and make outdoor activities less enjoyable.

May Average Humidity in Portneuf

This chart illustrates the average monthly humidity levels in Portneuf, 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 Portneuf is approximately 79%, 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 Portneuf

In Portneuf 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 Portneuf.

Maximum UV Index Levels in Portneuf for May

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

Data source: Portneuf 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 Portneuf Compares to Other Months

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

This table compares monthly weather conditions in Portneuf, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-11°C (13°F)	87 mm (3.4 inches)	95%	low
February Weather	-9°C (16°F)	87 mm (3.4 inches)	93%	moderate
March Weather	-4°C (25°F)	97 mm (3.8 inches)	90%	moderate
April Weather	4°C (39°F)	117 mm (4.6 inches)	87%	high
May Weather	12°C (54°F)	107 mm (4.2 inches)	79%	very high
June Weather	17°C (63°F)	128 mm (5.1 inches)	73%	very high
July Weather	20°C (68°F)	126 mm (5.0 inches)	81%	very high
August Weather	19°C (66°F)	120 mm (4.7 inches)	81%	very high
September Weather	14°C (58°F)	109 mm (4.3 inches)	81%	high
October Weather	8°C (46°F)	139 mm (5.5 inches)	87%	moderate
November Weather	-1°C (31°F)	133 mm (5.2 inches)	89%	moderate
December Weather	-8°C (19°F)	107 mm (4.2 inches)	92%	low