If you're hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Libreville: The hottest months are usually March and February, with an average temperature of 27°C, while the coldest months are July and August, with an average of 24°C. The rainiest months in Libreville are November, October, December and May, with each month seeing an average of 400 mm of rainfall.