Weather can make or break a roadtrip, so here’s some data about year-round temperatures in Minbu to help you plan yours: The hottest months are usually April and May with an average temp of 86°F, while the coldest months are January and December with an average of 75°F. The rainiest months in Minbu are August, June, September, and July, with each month seeing an average of 9 inches of rainfall.