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 Rim Nuea: The hottest months are usually April and March, with an average temperature of 28°C, while the coldest months are January and December, with an average of 23°C. The rainiest months in Rim Nuea are September, August, July and October, with each month seeing an average of 213 mm of rainfall.