If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Quebradillas: The hottest months are usually August and July with an average temp of 81°F, while the coldest months are March and February with an average of 76°F. The rainiest months in Quebradillas are May, September, October, and November, with each month seeing an average of 8 inches of rainfall.