August in Khlong Yai is the rainiest month of the year. In August, the weather in Khlong Yai is typically warm. Average daily high temperature in August is about 27 degrees above zero. On average, Khlong Yai has 31 rainy days in August. The rains are usually heavy. August as well as March, April, May, and June is considered the most uncomfortable time to visit Khlong Yai.