Weather will likely play an important role when you plan your trip to Bahir Dar, and keep in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually March and April with an average temp of 73°F, while the coldest months are November and September with an average of 65°F. The rainiest months in Bahir Dar are July, August, June, and September, with each month seeing an average of 16 inches of rainfall.