Planning for the weather is a good way to make your trip to Medjumbe Island relaxing and enjoyable, especially when you're splurging. The hottest months are usually December and November, with an average temperature of 27°C, while the coldest months are July and August, with an average of 24°C. The rainiest months in Medjumbe Island are January, February, March and December, with each month seeing an average of 262 mm of rainfall.