June in Huatulco is the cloudiest month of the year. In June, the weather in Huatulco is typically warm. Average daily high temperature in June is about 24 degrees above zero. On average, Huatulco has 29 rainy and 1 partly cloudy day in June. The rains are usually heavy. June as well as May, July, August, and September is considered the most uncomfortable time to visit Huatulco.