If you're hoping to get lost in the rain on your romantic getaway, check out these details about year-round temperatures in Ibadan: The hottest months are usually January and February with an average temp of 84°F, while the coldest months are August and July with an average of 78°F. The rainiest months in Ibadan are September, June, July, and August, with each month seeing an average of 9 inches of rainfall.