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 temp of 81°F, while the coldest months are August and July with an average of 79°F. The rainiest months in Freetown are August, July, September, and June, with each month seeing an average of 27 inches of rainfall.