April weather forecastSaint Clair, MI
April
Weather in April
Ocean temperature
In April, the average ocean temperature in Saint Clair, Michigan, is 37.2°F (2.9°C).Note: When swimming, this is deemed life-endangering and extremely risky. The painful cold water instigates fast-paced hyperventilation. Wearing a specialized swimsuit is necessary to lessen thermal harm.
Daylight
In April, the average length of the day is 13h and 25min.On the first day of the month, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of April, sunrise is at 6:24 am and sunset at 8:29 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 April, the average ocean temperature is 37.2°F (2.9°C). For swimming, this is considered life-threatening and very dangerous. The water feels painfully cold, and hyperventilation quickly occurs. A specialized swimsuit is mandatory to reduce thermal damage.
The average day length in April is 13h and 25min.
On the first day of April, sunrise is at 7:10 am and sunset at 7:56 pm. On the last day of the month, sunrise is at 6:24 am and sunset at 8:29 pm EDT.
Average sea temperature in April
Saint Clair, MI
- Average sea temperature in April: 37.3°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 April
Saint Clair, MI
- Average daylight in April: 13h and 24min
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).





