Planning for the weather is an important factor for making your trip to Benin City a success, especially when you're splurging. The hottest months are usually January and February, with an average temperature of 28°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Benin City are September, June, July and August, with each month seeing an average of 348 mm of rainfall.