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May Weather in Seaforth, Canada

Last updated: June 18, 2025

In May, the average temperature in Seaforth, Canada hovers around 12°C (53°F). While you may experience a minimum chill of -2°C (29°F), the highs can reach a warm 28°C (82°F). Expect about 97 mm (3.8 in) of precipitation spread over 13 days, with an average humidity level of 82%, creating a uniquely refreshing atmosphere.

May Temperature in Seaforth

In May in Seaforth, the average temperature is 12°C (53°F). The maximum can reach 28°C (82°F), and the minimum can be as low as -2°C (29°F). Be prepared for a wide range of temperatures when traveling, so pack accordingly!

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

The chart illustrates May temperature patterns in Seaforth, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Seaforth, May typically has an average temperature of 12°C (53°F), with highs reaching up to 28°C (82°F) and lows dropping to around -2°C (29°F).
JanFebMarAprMayJunJulAugSepOctNovDec252632415364706963523831
Data source: Temperature data for Seaforth 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 Seaforth

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

May Precipitation Trends in Seaforth

The chart displays monthly precipitation patterns in Seaforth, 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 Seaforth, May typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec8590781049791791159913611588
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Seaforth

In Seaforth in May, humidity is 82%. With an average temperature of 12°C (53°F), this humidity feels like a damp blanket enveloping you, making travel uncomfortable and sticky, as you navigate through the thick air that weighs heavily on your skin.

May Average Humidity in Seaforth

This chart illustrates the average monthly humidity levels in Seaforth, 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 Seaforth is approximately 82%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%90%88%87%83%81%79%80%81%84%88%87%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Seaforth

In Seaforth 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 Seaforth.

Maximum UV Index Levels in Seaforth for May

The chart shows the monthly maximum UV Index (UVI) for Seaforth 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 Seaforth typically reaches 9, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec2458910997532
Data source: Seaforth 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 Seaforth Compares to Other Months

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

This table compares monthly weather conditions in Seaforth, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-4°C (25°F)85 mm (3.4 inches)90%low
February Weather-4°C (26°F)90 mm (3.5 inches)90%moderate
March Weather0°C (33°F)78 mm (3.1 inches)87%moderate
April Weather5°C (41°F)104 mm (4.1 inches)87%very high
May Weather12°C (53°F)97 mm (3.8 inches)82%very high
June Weather18°C (64°F)91 mm (3.6 inches)81%very high
July Weather21°C (70°F)79 mm (3.1 inches)79%very high
August Weather20°C (69°F)115 mm (4.5 inches)80%very high
September Weather17°C (63°F)99 mm (3.9 inches)81%high
October Weather11°C (52°F)136 mm (5.3 inches)84%moderate
November Weather3°C (38°F)115 mm (4.5 inches)88%moderate
December Weather0°C (32°F)88 mm (3.5 inches)87%low

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