If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Arhavi: The hottest months are usually August and July with an average temp of 72°F, while the coldest months are January and February with an average of 46°F. The rainiest months in Arhavi are September, October, August, and July, with each month seeing an average of 10 inches of rainfall.