If you’re hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Libreville: The hottest months are usually March and February with an average temp of 80°F, while the coldest months are July and August with an average of 76°F. The rainiest months in Libreville are November, October, December, and May, with each month seeing an average of 16 inches of rainfall.