If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Central Manitoulin: The hottest months are usually August and July, with an average temperature of 16°C, while the coldest months are February and January, with an average of -4°C. The snowiest months in Central Manitoulin are January, February, November and March, with each month seeing an average of 14 cm of snowfall.