Nuvista Tours and Travel

WILDLIFE & NATURE DEEP DIVES

The Great Migration Explained: When and Where to See It

Wildlife Deep Dive • 8 min read • Updated 2026

More than a million wildebeest, alongside hundreds of thousands of zebra and gazelle, move in a continuous, roughly circular pattern between Tanzania’s Serengeti and Kenya’s Maasai Mara every year, chasing rain and fresh grazing. It’s the largest overland animal migration on Earth, and timing your trip to the right stage of the cycle makes an enormous difference to what you will see.

The Migration Is a Year-Round Cycle, Not an Event

There is no single Migration season; the herds are always somewhere in the Serengeti-Mara ecosystem, moving constantly. What changes throughout the year is exactly where they are and what they are doing, which is why the same trip name (migration safari) can mean very different experiences depending on the month.

December to March: Calving Season, Southern Serengeti

The herds gather on the short-grass plains of the southern Serengeti and Ndutu area, where up to 8,000 wildebeest calves are born each day at the peak. It’s also peak predator season; lions, cheetahs, and hyenas take full advantage of so many vulnerable newborns.

April to May: The Long Rains, Central & Western Serengeti

As the plains dry out, the herds begin moving north and west in enormous columns. This is a quieter, greener season with fewer other travellers, and the sheer scale of the moving herds is still a remarkable sight.

June to July: Grumeti River Crossings

The herds reach the Grumeti River in the western corridor, smaller, less crowded crossings than the famous Mara River ones, but dramatic in their own right, with large Nile crocodiles waiting.

August to October: Mara River Crossings

This is the iconic imagery most people picture: wildebeest plunging steep banks into the crocodile-filled Mara River to cross into Kenya’s Maasai Mara. Crossings can happen at almost any time of day and are never fully predictable, but this three-month window offers the best odds.

November: Return South

As the short rains begin, the herds turn south again back toward the Serengeti, completing the loop before calving season starts once more.
For river crossings specifically: aim for August-ctober in the Mara, or June in the Grumeti area. For newborn calves and predator action: December-March in the southern Serengeti.

Tips for Seeing It Well

Plan Your Migration Safari

Tell us your travel month, and we will recommend exactly where the herds are likely to be.