Planning for the weather is a good way to make your trip to Benin City relaxing and enjoyable, especially when you’re splurging. The hottest months are usually January and February with an average temp of 83°F, while the coldest months are August and July with an average of 78°F. The rainiest months in Benin City are September, June, July, and August, with each month seeing an average of 14 inches of rainfall.