Weather is probably a major factor when you plan your trip to Ruharambuga, but bear in mind that cheaper options are usually available when the weather isn't as good. The hottest months are usually August and September, with an average temperature of 20°C, while the coldest months are January and June, with an average of 19°C. The rainiest months in Ruharambuga are April, November, December and October, with each month seeing an average of 212 mm of rainfall.