Plan your trip to the beach with a look at year-round temperatures in Chaloem Phra Kiat: The hottest months are usually April and March, with an average temperature of 29°C, while the coldest months are January and December, with an average of 25°C. The rainiest months in Chaloem Phra Kiat are September, July, August and October, with each month seeing an average of 257 mm of rainfall.