There's nothing like an all-inclusive holiday in Ruhengeri to rejuvenate you, especially when you know what kind of weather to expect. Here's some information to help you choose when to book: The hottest months are usually August and July, with an average temperature of 17°C, while the coldest months are November and December, with an average of 16°C. July and June are the driest months, while April and November are the rainiest months.