Weather will likely play an important role when you plan your trip to Musoma, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually February and September, with an average temperature of 23°C, while the coldest months are June and July, with an average of 22°C. The rainiest months in Musoma are April, November, December and May, with each month seeing an average of 210 mm of rainfall.