April in Hat Yai is the hottest month of the year. In April, the weather in Hat Yai is typically hot. Average daily high temperature in April is about 31 degrees above zero. On average, Hat Yai has 28 rainy, 1 sunny, and 1 cloudy day in April. The rains are usually heavy. April as well as January, May, June, and July is considered the most uncomfortable time to visit Hat Yai.