Planning for the weather is an important factor for making your trip to Koh Phi Phi Leh a success, especially when you’re splurging. The hottest months are usually April and March, with an average temperature of 28°C, while the coldest months are January and February, with an average of 28°C. The rainiest months in Koh Phi Phi Leh are September, October, July and August, with each month seeing an average of 374 mm of rainfall.