Planning for the weather is an important factor for making your trip to Khao Yoi a success, especially when you're splurging. The hottest months are usually April and May, with an average temperature of 30°C, while the coldest months are December and January, with an average of 27°C. The rainiest months in Khao Yoi are September, October, May and July, with each month seeing an average of 201 mm of rainfall.