May weather forecastSaint Clair, MI
May
Weather in May
Ocean temperature
In Saint Clair, Michigan, the average seawater temperature in May is 44.6°F (7°C).Note: One needs to be cautious in 44.6°F (7°C) waters. 55.4°F (13°C) is already forbidding, but sub14°F (-10°C) can seriously disrupt your breathing and lead to a frigid shock, considering one's well-being.
Daylight
In May, the average length of the day is 14h and 40min.On the first day of May, sunrise is at 6:22 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 9:01 pm EDT.
Updated: Jul 30, 2024
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather U.S. | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In May, the average ocean temperature is 44.6°F (7°C). Swimming in 44.6°F (7°C) is considered dangerous. Unprotected immersion in temperatures below 50°F (10°C) causes quickly maximum intensity cold shock with hyperventilation.
In Saint Clair, the average day length in May is 14h and 40min.
On the first day of May, sunrise is at 6:22 am and sunset at 8:31 pm. On the last day of the month, sunrise is at 5:54 am and sunset at 9:01 pm EDT.
Average sea temperature in May
Saint Clair, MI
- Average sea temperature in May: 44.6°F
The best month for swimming (with the highest average sea temperature) is August (73.7°F).
The coldest month (with the lowest average sea temperature) is February (32.4°F).
Average daylight in May
Saint Clair, MI
- Average daylight in May: 14h and 42min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).





