Planning for the weather is an important factor for making your trip to Tha Song Yang a success, especially when you're splurging. The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Tha Song Yang are July, August, June and September, with each month seeing an average of 959 mm of rainfall.