This updated 2026 guide explains the Great Wildebeest Migration month by month across the Serengeti-Mara ecosystem, including why timing is approximate and how to position a safari well.
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February 26, 2026
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The Great Migration is often marketed as if it happens in one place, in one month, on a predictable schedule. That is not how it works. In 2026, the strongest migration trip will still come from understanding the Serengeti-Mara ecosystem as a year-round cycle shaped by rainfall, grass and river conditions, not by a fixed calendar promise.
The Maasai Mara’s official migration guide describes the movement as a year-round journey of more than two million animals between the Serengeti in Tanzania and the Maasai Mara in Kenya. The broader migration cycle typically includes over 1.5 million wildebeest, hundreds of thousands of zebras and large numbers of gazelles moving through the ecosystem in a clockwise pattern as the rains shift. This is why the migration should be planned as a moving system rather than a single event.
The official Maasai Mara migration guide places calving season in the southern Serengeti and Ngorongoro area from late January through March. As conditions change, the herds move west and north through the Serengeti around April to June, then typically reach the Mara River around July through September. By October, the herds begin shifting south again with the short rains. Those dates are useful planning markers, but rainfall can push the movement earlier or later in any given year.
Kenya is usually the better fit for travelers who care most about the Mara River drama and the classic July to October migration narrative. Tanzania is stronger for clients who want the wider migration story across more months, including calving season and the western corridor movement before the Kenya crossings. The right answer depends on what part of the cycle matters most. A client chasing crossings should not book a calving-focused area, and a client who wants birthing season should not assume the Mara is the answer.
River crossings are the most dramatic migration image, but they are also the least controllable part of the experience. The Maasai Mara’s official material is clear that crossings are unpredictable, even within the core season. Clients should therefore book for overall migration positioning, predator density and time in the right sector, not with the expectation that one exact river crossing can be guaranteed on cue. A well-positioned migration safari is still excellent even when one headline crossing does not happen in front of the vehicle.
The best migration planning rule for 2026 is to choose the right geography first, then give the trip enough nights to work. Kenya is strongest for Mara-focused migration timing, while Tanzania can carry the story across more of the year. Once the correct zone is chosen, avoid moving too often. A better-positioned camp with enough time almost always outperforms an itinerary that changes location too quickly in search of a perfect crossing report.
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