If you’re looking forward to lots of outings with your partner, take a look at these details about year-round temperatures in Nong Kwai: 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 Nong Kwai are September, August, July and October, with each month seeing an average of 213 mm of rainfall.