If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Matsusaka: The hottest months are usually August and July with an average temp of 75°F, while the coldest months are January and February with an average of 44°F. The rainiest months in Matsusaka are June, October, September, and July, with each month seeing an average of 11 inches of rainfall.