Other facts from our historical weather data: Which months have the greatest rainfall in Musoma? Most rainfall (rainy season) is seen in April, November and December. Which is the warmest month in Musoma? September has an average maximum temperature of 29°C (84°F) and is the warmest month of the year. Which is the coldest month in Musoma? The coldest month is July with an average maximum temperature of 27°C (81°F). Which is the wettest month in Musoma? April tops the wettest month list with 196mm (7.7 in) of rainfall. Which is the driest month in Musoma? July is the driest month with 27mm (1.1 in) of precipitation. No idea where to travel to this year? We have a tool that recommends destinations based on your ideal conditions. Find out where to go with our weather planner.