If you’re looking forward to lots of outings with your partner, check out these details about year-round temperatures in Higashiizu: The hottest months are usually August and July with an average temp of 74°F, while the coldest months are January and February with an average of 47°F. The rainiest months in Higashiizu are June, September, July, and October, with each month seeing an average of 12 inches of rainfall.