Planning for the weather is a good way to make your trip to Mansuar Island relaxing and enjoyable, especially when you're splurging. The hottest months are usually October and November, with an average temperature of 27°C, while the coldest months are July and August, with an average of 26°C. The rainiest months in Mansuar Island are April, May, March and June, with each month seeing an average of 402 mm of rainfall.