When to Visit Rusizi National Park-Wildlife Safaris
In general, there is a short dry season from December to January, relatively heavy rains from February to May, followed by a long dry season between June and September and substantial rainfall between October and December.
The amount of rainfall varies considerably from region to region but is generally in the range 500–2,000 mm per annum; the mean at Bujumbura is c. 960 mm.
Precipitation in the western mountains is higher (average 1,375 mm annually) but is lower over the eastern plateaus, between c.1,100–1,250 mm per year. Mean annual temperatures on the plateau are around 21°C, reaching 33°C during the main dry season. Temperatures can fall to 6°C in some areas and frosts occur on the highest and most exposed peaks.