Planning for the weather is a good way to make your trip to Perak relaxing and enjoyable, especially when you're splurging. The hottest months are usually May and June with an average temp of 79°F, while the coldest months are January and December with an average of 77°F. The rainiest months in Perak are November, December, October, and April, with each month seeing an average of 15 inches of rainfall.