Planning for the weather is a good way to make your trip to Ruhengeri relaxing and enjoyable, especially when you're splurging. 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. The rainiest months in Ruhengeri are April, November, October and March, with each month seeing an average of 319 mm of rainfall.