May Weather in Smithers, Canada

Last updated: June 18, 2025

The average temperature in Smithers, Canada during May hovers around 7°C (44°F), creating a cool atmosphere perfect for cozy activities. However, be prepared for a temperature range that can dip as low as -5°C (24°F) and soar up to 23°C (74°F). Expect about 65 mm (2.5 in) of precipitation spread over 13 days, coupled with an average humidity of 88%, making for a refreshing yet damp experience.

May Temperature in Smithers

In May in Smithers, the average temperature is 7°C (44°F), with maximums reaching 23°C (74°F) and minimums dropping as low as -5°C (24°F). Travelers should be prepared for a wide range of temperatures, from mild days to chilly nights.

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

The chart illustrates May temperature patterns in Smithers, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Smithers, May typically has an average temperature of 7°C (44°F), with highs reaching up to 23°C (74°F) and lows dropping to around -5°C (24°F).

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

May Precipitation in Smithers

In Smithers in May, the total precipitation amount is 65 mm (2.5 in) over a span of 13 days.

May Precipitation Trends in Smithers

The chart displays monthly precipitation patterns in Smithers, 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 Smithers, May typically receives around 65 mm (2.5 inches) of precipitation spread over approximately 13 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 Smithers

In Smithers in May, humidity is 88%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that clings to your skin, making outdoor exploration uncomfortable and prompting frequent breaks in sheltered areas.

May Average Humidity in Smithers

This chart illustrates the average monthly humidity levels in Smithers, 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 Smithers is approximately 88%, 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 Smithers

In Smithers 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 Smithers.

Maximum UV Index Levels in Smithers for May

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

Data source: Smithers 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 Smithers Compares to Other Months

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

This table compares monthly weather conditions in Smithers, 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)	102 mm (4.0 inches)	96%	low
February Weather	-9°C (16°F)	76 mm (3.0 inches)	94%	low
March Weather	-3°C (27°F)	82 mm (3.2 inches)	93%	moderate
April Weather	1°C (33°F)	53 mm (2.1 inches)	91%	moderate
May Weather	7°C (44°F)	65 mm (2.5 inches)	88%	very high
June Weather	10°C (51°F)	82 mm (3.2 inches)	84%	very high
July Weather	13°C (55°F)	83 mm (3.3 inches)	87%	very high
August Weather	12°C (54°F)	75 mm (2.9 inches)	88%	high
September Weather	8°C (46°F)	112 mm (4.4 inches)	91%	high
October Weather	1°C (35°F)	125 mm (4.9 inches)	95%	moderate
November Weather	-3°C (27°F)	151 mm (5.9 inches)	98%	low
December Weather	-8°C (17°F)	91 mm (3.6 inches)	98%	low