Weather is probably a major factor when you plan your trip to Mueang Loei, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually April and March with an average temp of 83°F, while the coldest months are January and December with an average of 72°F. The rainiest months in Mueang Loei are August, September, July, and May, with each month seeing an average of 11 inches of rainfall.