Planning for the weather is an important factor for making your trip to Seri Manjung a success, 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 Seri Manjung are November, December, October, and March, with each month seeing an average of 12 inches of rainfall.