Smaller and situated north-west of Selous, Ruaha National Park is fed by the Great Ruaha River and is the centre of an ecosystem spanning 50,000km. Like Selous, it straddles two biomes - savannah and miombo - and as such is home to diverse and healthy populations of animal. It is, however, much drier than Selous, receiving on average 500mm of rain per annum; and it’s also hotter, with temperatures ranging between 15°C and 40°C, the coolest month being June, when daytime temperatures hover around the 30°C mark.
All of which means that Ruaha is genuinely arid, and much more vulnerable to drought than Selous. The dry season - May through November - is long, hot (but not humid) and is the best time for game, while January through to April is good for bird watching.