Planning for the weather is an important factor for making your trip to Phlap Phla a success, especially when you’re splurging. The hottest months are usually April and March with an average temp of 82°F, while the coldest months are January and December with an average of 79°F. The rainiest months in Phlap Phla are September, July, August, and June, with each month seeing an average of 17 inches of rainfall.