Every year, more than 1.5 million wildebeest, 200,000 zebras, and hundreds of thousands of gazelles move in a vast, clockwise loop between Tanzania’s Serengeti and Kenya’s Maasai Mara. It is the largest overland migration on earth, and witnessing it in person rearranges something inside you. The dust, the noise, the sheer biomass — no documentary prepares you for the scale.
The migration is not a single event but a year-round cycle dictated by rainfall. From January to March, the herds gather on the short-grass plains of the southern Serengeti and Ndutu, where roughly 8,000 calves are born every day. This is calving season — a photographer’s dream, and the easiest time to see big cats hunting. By April and May the herds drift north-west through the central Serengeti, following the rains. June and July bring the dramatic Grumeti River crossings, and from late July through October the famous Mara River crossings unfold on the border with Kenya — the iconic scenes of wildebeest plunging into crocodile-filled waters.
Choosing where to base yourself is the single biggest decision. Mobile tented camps that move with the herds — such as those in Ndutu in February or the Mara North in August — put you within minutes of the action. Permanent lodges are more comfortable but can mean long game drives to reach the herds if you visit at the wrong time of year. Our advice: pick your dates first, then let the herds choose your camp.
Beyond the wildebeest, the migration sustains an entire ecosystem. Lion prides grow fat, hyena clans patrol the river banks, and vultures circle in numbers you will not see anywhere else on earth. Plan four to six nights in the Serengeti to truly slow down and absorb it — anything shorter and you are simply ticking a box.