September in Phang Nga is the coldest month of the year. In September, the weather in Phang Nga is typically warm. Average daily high temperature in September is about 27 degrees above zero. On average, Phang Nga has 28 rainy and 2 cloudy days in September. The rains are usually heavy. September as well as April, May, June, and July is considered the most uncomfortable time to visit Phang Nga.