Monthly weather forecast and climate
Saint Ignace, MI

Average sea temperature - Saint Ignace, MI

The best month for swimming (with the highest average sea temperature) is August (68.6°F).
The coldest month (with the lowest average sea temperature) is March (33.1°F).

Average daylight - Saint Ignace, MI

The month with the longest days is June (Average daylight: 15.7h).
The month with shortest days is December (Average daylight: 8.7h).