April in Phuket is the hottest month of the year. In April, the weather in Phuket is typically hot. Average daily high temperature in April is about 29 degrees above zero. On average, Phuket has 27 rainy, 2 sunny, and 1 partly cloudy day in April. The rains are usually heavy. April as well as January, March, May, and June is considered the most uncomfortable time to visit Phuket.