If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Penebel: The hottest months are usually November and March with an average temp of 78°F, while the coldest months are August and September with an average of 76°F. The rainiest months in Penebel are December, January, November, and February, with each month seeing an average of 11 inches of rainfall.