Planning for the weather is a good way to make your trip to Freetown relaxing and enjoyable, especially when you’re splurging. The hottest months are usually January and December, with an average temperature of 27°C, while the coldest months are August and July, with an average of 26°C. The rainiest months in Freetown are August, July, September and June, with each month seeing an average of 694 mm of rainfall.