If you're hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Golfito: The hottest months are usually March and February with an average temp of 76°F, while the coldest months are January and February with an average of 75°F. The rainiest months in Golfito are October, August, November, and July, with each month seeing an average of 34 inches of rainfall.