If you’re hoping to get lost in the rain on your romantic getaway, take a look at these details about year-round temperatures in Nang Rong: 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 Nang Rong are September, July, August and October, with each month seeing an average of 257 mm of rainfall.