It is the greatest wildlife show on Earth: roughly two million wildebeest, zebra and gazelle moving in an endless loop across the Serengeti-Mara ecosystem, trailed by lions, cheetahs and crocodiles. But the single most important thing to understand about the Great Migration is that it never stops — it is a continuous, year-round journey, not a one-off event. To witness the moment you’re dreaming of, whether thundering river crossings or newborn calves on the plains, you need to be in the right place at the right time. This Great Migration month-by-month guide tells you exactly where the herds are, and when, so you can plan the perfect Serengeti safari.
What Is the Great Wildebeest Migration?
The Great Migration is the natural movement of enormous herds of wildebeest, along with hundreds of thousands of zebra and gazelle, in a roughly clockwise circuit through Tanzania’s Serengeti and Kenya’s Maasai Mara. Driven by the search for fresh grazing and water, the animals follow the seasonal rains. Along the way they must survive predators on land and crocodiles in the rivers, calve their young, and cover thousands of kilometres each year. Because it follows the rains rather than a calendar, the timing shifts slightly year to year — but the broad pattern is remarkably predictable. Learn more about planning around it on our wildebeest migration safari page.
The Migration at a Glance
| Months | Location | Highlight |
|---|---|---|
| Dec–Mar | Southern Serengeti / Ndutu | Calving season, predator action |
| Apr–May | Central Serengeti | Herds moving north, green season |
| Jun | Western Corridor / Grumeti | Grumeti River crossings begin |
| Jul–Aug | Northern Serengeti | Dramatic Mara River crossings |
| Sep–Oct | Northern Serengeti / Mara | More crossings, big herds |
| Nov | Returning south | Short rains pull herds back |
December to March: Calving Season in the South
As the short rains green the southern Serengeti and the Ndutu plains, the herds gather here to feast on the nutrient-rich grass. This is calving season — around half a million wildebeest are born in just a few weeks, often hundreds in a single morning. The plains fill with wobbly newborns taking their first steps, and the abundance of vulnerable prey draws intense predator activity. Lions, cheetahs and hyenas are everywhere, making this one of the most thrilling and action-packed times to visit. For wildlife drama and superb big-cat sightings, December to March is hard to beat, and it coincides with one of Tanzania’s two dry windows.
April to May: The Green Season Move North
As the calves grow stronger and the southern grass is exhausted, the great columns begin drifting northwest through the central Serengeti. April and May bring the long rains, so this is the lush, green, low-season period — fewer crowds, lower prices and dramatic skies, though occasional heavy showers. The herds are massing and on the move, and photographers love the emerald landscapes. If you don’t mind some rain and want value and solitude, this can be a rewarding time to travel.
June: Crossings Begin in the Western Corridor
By June the rains ease and the herds push into the Western Corridor, where they face their first major obstacle: the Grumeti River. The Grumeti crossings are less famous than the Mara but no less dramatic, with enormous crocodiles lying in wait. June marks the start of the classic dry season — excellent game viewing and the beginning of the river-crossing spectacle.
July to August: The Famous Mara River Crossings
This is the season most travelers picture when they imagine the migration. The herds reach the northern Serengeti and the Mara River, and to continue they must brave its swift, crocodile-filled waters. The crossings are pure, heart-stopping drama — thousands of animals hesitating, then plunging en masse as crocodiles strike and the survivors scramble up the far bank. July and August offer the best chance to witness these crossings, though nature keeps no schedule, so patience and a few days in the right area dramatically improve your odds. This is peak season, so book well ahead.
September to October: More Drama in the North
The herds remain concentrated in the northern Serengeti and across the border in the Maasai Mara through September and into October, often crossing the river multiple times in both directions as they chase grazing. Crowds thin slightly compared with August, yet the spectacle continues. For travelers who want river crossings with marginally fewer vehicles, these shoulder weeks are a smart choice.
November: The Return South
When the short rains arrive in November, they call the herds back toward the southern plains to begin the cycle anew. The animals stream south through the eastern Serengeti, and by December they are back on the Ndutu calving grounds. November is a quieter, greener transitional month with good value and the satisfying sight of the migration on the move once more.
So When Should You Go?
It depends on the experience you want. For the river crossings, target July to October. For calving and explosive predator action, choose January to March. For green-season value and fewer crowds, consider April, May or November. Whatever your window, the key is to position your camp in the right part of the Serengeti for that month — staying in the south during crossing season, for example, would mean missing the show entirely. Our guide to the best time to visit Tanzania adds further detail on weather and wildlife by month.
Where to Stay to Follow the Herds
Because the migration moves, savvy operators use mobile and seasonal camps that relocate with the herds, plus permanent lodges in key zones of the Serengeti. We position your accommodation to match the migration’s expected location for your travel dates, so you wake up close to the action rather than driving hours to reach it. A typical migration safari also pairs the Serengeti with the Ngorongoro Crater for a complete northern-circuit experience.
How Many Days Do You Need?
To give yourself a realistic chance of witnessing a crossing or immersing in the calving spectacle, plan at least three to four nights in the relevant part of the Serengeti, ideally more. River crossings in particular reward patience — the herds may gather at the bank for hours or days before committing. Our 7-day Serengeti migration safari and 11-day Great Migration safari are built specifically to maximise your time where the action is.
Why Book Your Migration Safari with Lauwo Adventures
Timing a migration safari well is an art, and it’s where local knowledge pays off. As a locally owned Tanzanian operator, we track the herds’ movements in real time and position your itinerary and camps accordingly. Our experienced guides know the crossing points, the predator territories and the quiet corners away from the convoy of vehicles. We offer comfortable 4x4s with guaranteed window seats, transparent all-inclusive pricing, and trips that support the communities who share this land. Browse all our Tanzania safari options to begin.
Frequently Asked Questions
What month is best to see the Great Migration?
For the famous Mara River crossings, July to October is best. For the calving season and intense predator action, visit January to March. Both fall within Tanzania’s dry, high-game-viewing windows.
Where is the Great Migration in July and August?
In the northern Serengeti around the Mara River, where the dramatic crossings take place. This is the most popular time to witness the migration.
Can you guarantee seeing a river crossing?
No operator can guarantee a crossing because the herds follow no fixed schedule, but staying several nights in the northern Serengeti during peak crossing season greatly improves your chances.
When is the wildebeest calving season?
Roughly late January to March, in the southern Serengeti and Ndutu plains, when around half a million calves are born in a few short weeks.
How many days do I need for a migration safari?
At least three to four nights in the right part of the Serengeti, though five to seven days gives you the best chance of memorable sightings and a fuller northern-circuit experience.
Ready to Witness the Migration?
The herds are always moving — let’s make sure you’re in exactly the right place to see them. Tell us your travel dates and we’ll design a Serengeti itinerary timed to the migration’s location.
👉 Request your free migration safari quote today and follow the greatest show on Earth.