Taking the local weather in Tha Mo Sai into account is an important factor for planning your visit, especially if you plan to spend your trip by the pool. The hottest months are usually March and April, with an average temperature of 27°C, while the coldest months are February and January, with an average of 26°C. The rainiest months in Tha Mo Sai are November, December, October and May, with each month seeing an average of 308 mm of rainfall.