Planning for the weather is a good way to make your trip to Lumut relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and June with an average temp of 82°F, while the coldest months are January and February with an average of 80°F. The rainiest months in Lumut are November, December, October, and March, with each month seeing an average of 12 inches of rainfall.