Planning for the weather is an important factor for making your trip to Mueang Loei a success, 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 22°C. The rainiest months in Mueang Loei are August, September, July and May, with each month seeing an average of 270 mm of rainfall.