April in Samut Prakan is the hottest month of the year. In April, the weather in Samut Prakan is typically hot. Average daily high temperature in April is about 35 degrees above zero. On average, Samut Prakan has 12 rainy, 9 partly cloudy, 8 sunny, and 1 cloudy day in April. The rains are usually heavy. April as well as May, June, July, and August is considered the most uncomfortable time to visit Samut Prakan.