Weather will likely play an important role when you plan your trip to Kasama, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually October and September, with an average temperature of 23°C, while the coldest months are July and June, with an average of 18°C. The rainiest months in Kasama are January, December, February and March, with each month seeing an average of 300 mm of rainfall.