Other facts from our historical weather data: Which months have the greatest rainfall in Shama? Most rainfall (rainy season) is seen in May and June. Which is the wettest month in Shama? June tops the wettest month list with 245mm (9.6 in) of rainfall. Which is the driest month in Shama? January is the driest month with 44mm (1.7 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.