The wildebeest migration is not an event you witness on a single day. It is a continuous, year-round movement of around 1.5 million wildebeest, 200,000 zebras, and several hundred thousand gazelle across the Serengeti-Mara ecosystem, a circuit driven by rainfall, grass quality, and the instinct to follow both.
RAIN, GRASS & INSTINCT
The Clockwise Migration Cycle
The herds follow a broadly clockwise route from the southern Serengeti into the western corridor, north to the Mara River, across into Kenya's Masai Mara, and back south again. The timing varies from year to year depending on when the rains arrive. The pattern is reliable. The exact dates are not.
THE YEAR-ROUND MOVEMENT
Where to Be and When
December to March: Calving Season, Southern Serengeti
The herds concentrate on the short-grass plains around the Ndutu area in the southern Serengeti and Ngorongoro Conservation Area. February is typically peak calving up to 8,000 calves per day at the height of the season. Predator activity is extremely high: lion, cheetah, leopard, and wild dog are all present and hunting consistently. The landscape is flat and open, which makes for exceptional visibility.
This is one of the most underrated times to visit the Serengeti. The spectacle of calving season rivals river crossing season for visual drama, without the concentration of visitors that July to October brings.
April to June: Western Corridor
As the long rains arrive, the herds push westwards through the central Serengeti and into the western corridor, where the Grumeti River provides the first significant water crossing of the year. Grumeti crossings are less predictable than the Mara crossings further north and often overlooked, but they are genuinely dramatic and typically far less crowded.
April and May are also the long rains in Tanzania, lower visitor numbers and lower prices, but travel should be planned carefully around which areas remain accessible.
July to October: River Crossing Season, Northern Serengeti & Masai Mara
This is the most searched and most visited phase of the migration. The herds accumulate on the banks of the Mara River in the northern Serengeti at Kogatende and Lamai, and in Kenya's Masai Mara and periodically attempt to cross. The crossings involve thousands of animals plunging into crocodile-dense water, and the chaos, noise, and predator activity make this one of the most photographed wildlife events on earth.
Crossings are unpredictable. Herds can wait on the bank for days before something triggers the move. Being camped nearby and able to respond quickly is the only reliable strategy. Mobile tented camps that position according to herd movements give the best access. Permanent lodges require longer drives.
Peak season bookings for the northern Serengeti and Masai Mara during July to October should be made nine to twelve months in advance. The best camps fill well ahead of this window.
November: Return South
As the short rains arrive, the herds begin moving south and east through the Lobo area of the eastern Serengeti, beginning the return to the southern plains. November is a quieter period that suits travelers who want the movement of the migration without the peak-season crowd.
TANZANIA VS KENYA DECISIONS
Serengeti or Masai Mara?
Both sit within the same ecosystem and during peak crossing season (July to October), the herds move between the two. The decision of where to base yourself is about logistics, experience type, and budget rather than one location being categorically better.
The northern Serengeti gives access to river crossings on the Tanzanian side of the border, with the advantage of being part of a wider Tanzania circuit that can include the central Serengeti, Ngorongoro, and Tarangire. The Masai Mara offers faster access from Nairobi and the option to combine with conservancy-based camps that allow night drives and walking safaris — activities not permitted inside Tanzania's national parks.
For clients who want the full migration circuit, Zorani can plan journeys that move between the northern Serengeti and the Masai Mara during crossing season, though this requires domestic flights and careful timing.
PRACTICAL REALITIES
What to Ask Before Booking
The right questions before committing to a migration journey are not about which lodge has the best reviews.
The right questions before committing to a migration journey are not about which lodge has the best reviews. They are: When are you traveling? What are you most interested in calving season, river crossings, or the movement itself? How much flexibility do you have to wait for a crossing to happen? Are you prepared to fly between camps if the herds move unexpectedly?
Zorani plans migration journeys around these practical realities rather than around a fixed itinerary that leaves clients in the wrong location at the wrong time.
READY FOR ADVENTURE
Talk to a Travel Designer
Begin planning your bespoke the great migration journey. Our designers will handle every detail of your safari.
SPEAK TO AN EXPERT