Uganda concentrates the Bwindi Impenetrable Forest's mountain gorillas (half the world's population), the chimpanzees of Kibale Forest, the Murchison Falls Nile cataract, and the Rwenzori Mountains' glacier-clad equatorial peaks.
Long dry season with Bwindi gorilla trekking at peak, chimpanzee tracking at Kibale reliable, and Murchison Falls game drives accessible without monsoon road closures.
Short dry season with Bwindi gorilla permits at peak demand, Christmas through New Year window booked far ahead, and Queen Elizabeth National Park tree-climbing lions visible.
Long rains with afternoon storms across the country, lower gorilla-permit demand, and Bwindi forest at peak greenery though trails muddy.
Short rains with afternoon storms manageable, Murchison Falls at peak flow, and the country greening up between the dry-season concentrations.