July in Khao Lak is the windiest month of the year. In July, the weather in Khao Lak is typically hot. Average daily high temperature in July is about 28 degrees above zero. On average, Khao Lak has 30 rainy and 1 sunny day in July. The rains are usually heavy. July as well as January, March, April, and May is considered the most uncomfortable time to visit Khao Lak.