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May Weather in Port Sanilac, United States

Last updated: June 24, 2025

In May, the average temperature in Port Sanilac, United States hovers around 7°C (45°F). Expect a range where the minimum can drop to 0°C (32°F), while the maximum may reach 18°C (65°F). Be prepared for approximately 100 mm (3.9 in) of precipitation spread over 11 days, and keep in mind that the average humidity is a high 80%.

May Temperature in Port Sanilac

In May in Port Sanilac, the average temperature is 7°C (45°F). Maximums can reach 18°C (65°F) and minimums can be as low as 0°C (32°F). Be prepared for cool weather, and pack layers to ensure comfort during your travels.

May Weather in Port Sanilac: Daily Temperature Highs, Lows, and Averages

The chart illustrates May temperature patterns in Port Sanilac, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Sanilac, May typically has an average temperature of 7°C (45°F), with highs reaching up to 18°C (65°F) and lows dropping to around 0°C (32°F).
JanFebMarAprMayJunJulAugSepOctNovDec282732374557687065544134
Data source: Temperature data for Port Sanilac 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 Port Sanilac

In Port Sanilac in May, the precipitation amount is 100 mm (3.9 in) over the course of 11 days.

May Precipitation Trends in Port Sanilac

The chart displays monthly precipitation patterns in Port Sanilac, 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 Port Sanilac, May typically receives around 100 mm (3.9 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec888779113100777182891369979
Data source: Precipitation data for May generated using information from the Copernicus Climate Change Service.
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May Humidity in Port Sanilac

In Port Sanilac in May, humidity is 80%. With an average temperature of 7°C (45°F), this humidity feels like you're wrapped in a damp blanket, making it quite uncomfortable for traveling and leaving you feeling chilly and clammy as you explore the area.

May Average Humidity in Port Sanilac

This chart illustrates the average monthly humidity levels in Port Sanilac, 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 Port Sanilac is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec88%87%85%86%80%80%80%81%80%84%90%86%
Data source: Humidity data for May generated using information from the Copernicus Climate Change Service.

May UV Index in Port Sanilac

In Port Sanilac 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 Port Sanilac.

Maximum UV Index Levels in Port Sanilac for May

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

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

This table compares monthly weather conditions in Port Sanilac, showing how May’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather-2°C (28°F)88 mm (3.5 inches)88%low
February Weather-3°C (27°F)87 mm (3.4 inches)87%moderate
March Weather0°C (32°F)79 mm (3.1 inches)85%moderate
April Weather3°C (38°F)113 mm (4.4 inches)86%very high
May Weather7°C (45°F)100 mm (3.9 inches)80%very high
June Weather14°C (58°F)77 mm (3.0 inches)80%very high
July Weather20°C (68°F)71 mm (2.8 inches)80%very high
August Weather21°C (70°F)82 mm (3.2 inches)80%very high
September Weather18°C (65°F)89 mm (3.5 inches)80%high
October Weather12°C (55°F)136 mm (5.3 inches)84%moderate
November Weather5°C (41°F)99 mm (3.9 inches)89%moderate
December Weather1°C (34°F)79 mm (3.1 inches)86%low

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