In November, the weather in Koh Lanta Yai is typically hot. Average daily high temperature in November is about 28 degrees above zero. On average, Koh Lanta Yai has 24 rainy, 2 sunny, 2 cloudy, and 2 partly cloudy days in November. The rains are usually heavy. November as well as April, May, June, and July is considered the most uncomfortable time to visit Koh Lanta Yai.