In June, the weather in Nakhon Si Thammarat is typically hot. Average daily high temperature in June is about 30 degrees above zero. On average, Nakhon Si Thammarat has 22 rainy, 6 cloudy, and 2 sunny days in June. The rains are usually moderate. June as well as January, April, May, and July is considered the most uncomfortable time to visit Nakhon Si Thammarat.