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May Weather in Renfrew, Canada

Last updated: June 18, 2025

In May, the average temperature in Renfrew, Canada hovers around 12°C (55°F). You'll experience a temperature range that can drop to a chilly -4°C (24°F) or rise to a balmy 34°C (94°F). Prepare for some moisture, as 111 mm (4.4 in) of precipitation is expected over 13 days, with an average humidity level of 75%—perfect for those who enjoy a refreshing atmosphere!

May Temperature in Renfrew

In May in Renfrew, the average temperature is 12°C (55°F). The maximum can reach 34°C (94°F), and the minimum can be as low as -4°C (24°F). This variation makes it essential for travelers to pack for both warm and cold conditions.

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

The chart illustrates May temperature patterns in Renfrew, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Renfrew, May typically has an average temperature of 12°C (55°F), with highs reaching up to 34°C (94°F) and lows dropping to around -4°C (24°F).
JanFebMarAprMayJunJulAugSepOctNovDec161827415464706759473221
Data source: Temperature data for Renfrew generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

May Precipitation in Renfrew

In Renfrew in May, the precipitation amount reaches 111 mm (4.4 in) over the course of 13 days.

May Precipitation Trends in Renfrew

The chart displays monthly precipitation patterns in Renfrew, 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 Renfrew, May typically receives around 111 mm (4.4 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec68707410911192100110661108273
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Renfrew

In Renfrew in May humidity is 75%. With an average temperature of 12°C (55°F), this humidity feels like a damp blanket wrapping around you, making travel slightly uncomfortable as the chill magnifies the moisture in the air.

May Average Humidity in Renfrew

This chart illustrates the average monthly humidity levels in Renfrew, 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 Renfrew is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec93%93%86%82%75%68%69%67%72%83%88%89%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Renfrew

In Renfrew 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 Renfrew.

Maximum UV Index Levels in Renfrew for May

The chart shows the monthly maximum UV Index (UVI) for Renfrew 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 Renfrew typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec245899997532
Data source: Renfrew 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 Renfrew Compares to Other Months

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

This table compares monthly weather conditions in Renfrew, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-9°C (16°F)68 mm (2.7 inches)93%low
February Weather-8°C (18°F)70 mm (2.8 inches)93%moderate
March Weather-3°C (27°F)74 mm (2.9 inches)86%moderate
April Weather5°C (41°F)109 mm (4.3 inches)82%very high
May Weather12°C (55°F)111 mm (4.4 inches)75%very high
June Weather18°C (64°F)92 mm (3.6 inches)68%very high
July Weather21°C (70°F)99 mm (3.9 inches)69%very high
August Weather19°C (67°F)110 mm (4.3 inches)67%very high
September Weather15°C (59°F)66 mm (2.6 inches)72%high
October Weather8°C (48°F)110 mm (4.3 inches)83%moderate
November Weather0°C (32°F)82 mm (3.2 inches)88%moderate
December Weather-6°C (22°F)73 mm (2.9 inches)89%low

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