Planning for the weather is a good way to make your trip to Na Noi relaxing and enjoyable, especially when you're splurging. 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 Na Noi are August, July, September and June, with each month seeing an average of 300 mm of rainfall.