Planning for the weather is an important factor for making your trip to Sam Suan a success, especially when you're splurging. The hottest months are usually April and March, with an average temperature of 30°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Sam Suan are September, August, July and May, with each month seeing an average of 237 mm of rainfall.