Weather will likely play an important role when you plan your trip to Bahir Dar, but bear 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 temperature of 23°C, while the coldest months are November and September, with an average of 19°C. The rainiest months in Bahir Dar are July, August, June and September, with each month seeing an average of 400 mm of rainfall.