Weather will likely play an important role when you plan your trip to Bamako, but bear 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 temperature of 31°C, while the coldest months are January and December, with an average of 27°C. The rainiest months in Bamako are August, July, September and June, with each month seeing an average of 229 mm of rainfall.