The Great Wildebeest Migration is one of the most spectacular wildlife events on earth, a perpetual, circular journey of roughly 1.5 million wildebeest, accompanied by hundreds of thousands of zebra and gazelle, as they move clockwise through the ecosystems of Tanzania and Kenya in search of fresh grass and water. Unlike a one-off event with a fixed date on the calendar, the migration is a living, breathing phenomenon shaped by rainfall, terrain, and instinct. Understanding its rhythms is the key to being in the right place at precisely the right time.
This guide breaks the Great Wildebeest Migration down month by month so you can plan your safari with confidence.
The Annual Circuit: An Overview
The migration covers approximately 1,800 kilometres in a year, looping across the Serengeti National Park in Tanzania, through Kenya's Maasai Mara, and back again. The herds never truly stop. Even when they appear to linger in one area, smaller groups are always moving, feeding, and reacting to the smell of distant rain. Broadly speaking, the journey can be divided into four major phases:
- Calving on the southern Serengeti plains (December to March)
- Northward migration through the central and western Serengeti (April to June)
- River crossings at the Grumeti and Mara Rivers (June to October)
- Return south through the eastern Serengeti (November to December)
Month-by-Month Location Guide
The table below gives a reliable overview of herd concentrations throughout the year. Remember that exact timing shifts by two to four weeks depending on annual rainfall, so treat this as a strong guideline rather than a fixed timetable.
| Month | Primary Location | Key Wildlife Highlight |
|---|---|---|
| January | Southern Serengeti (Ndutu, Ngorongoro border) | Calving season begins; newborn wildebeest |
| February | Southern Serengeti (Ndutu plains) | Peak calving; predator activity at its highest |
| March | Southern/Central Serengeti | Herds begin drifting north as rains ease |
| April | Central Serengeti (Seronera area) | Long rains; lush plains; herds spreading north |
| May | Central to Western Serengeti | Herds consolidating; moving toward Grumeti |
| June | Western Corridor (Grumeti River) | First major river crossings of the year |
| July | Northern Serengeti / Maasai Mara border | Buildup toward Mara River crossings |
| August | Maasai Mara, Kenya | Peak Mara River crossings; peak visitor season |
| September | Maasai Mara | Herds linger; crossings continue; excellent game |
| October | Northern Serengeti / Maasai Mara | Herds beginning to turn south |
| November | Central and Eastern Serengeti | Short rains trigger southward movement |
| December | Southern Serengeti / Ndutu | Arrival on calving plains; cycle restarts |
January and February: The Calving Season
The southern plains around Ndutu and the Ngorongoro Conservation Area are the nursery of the migration. Between late January and mid-March, up to 8,000 calves are born every single day during the peak of calving. This extraordinary productivity is linked to the short-grass plains, which are rich in minerals essential for lactating mothers.
Calving season attracts an extraordinary concentration of predators -- lions, cheetahs, leopards, hyenas, African wild dogs, and jackals all benefit from the seasonal abundance of vulnerable young. The drama here is intimate and relentless.
Why Visit Now
- Soft golden light on the open Ndutu plains makes for superb photography
- Cheetah sightings are exceptional; cheetahs thrive on newborn calves
- Fewer crowds than the Mara River crossing season
- Lodges around Lake Ndutu offer superb access to the plains
March and April: The Long Rains Begin
As the short rains give way to the long rains, the herds begin their drift northward. The central Serengeti around Seronera remains productive for general game viewing even as the wildebeest pass through. The landscape is vivid green, kopjes are reflected in shallow pools, and the air smells of rain on red earth.
April can be wetter and less visited, which suits travellers who prefer space over perfect blue skies. Prices at many camps drop, and you can have entire plains to yourself.
May and June: The Western Corridor
By May, the columns of wildebeest are streaming north and west, funnelling into the Western Corridor of the Serengeti. By June, the leading edge encounters the Grumeti River, a smaller but still dramatic crossing site before the main event at the Mara. Crocodiles in the Grumeti are famously large -- some of the biggest on the continent -- and the crossings here can be explosive.
Western Corridor Highlights
- Grumeti River crossings: dramatic and less visited than the Mara
- Kirawira and Grumeti Serengeti Tented Camp are standout bases
- Tsetse fly numbers can be high; pack light-coloured, long-sleeved clothing
- Game off the main migration route remains excellent year-round
July, August, and September: The Mara River Crossings
This is the moment most travellers picture when they think of the Great Wildebeest Migration. The herds pour into the northern Serengeti and spill across the border into Kenya's Maasai Mara, where the Mara River stands between them and the fresh grass beyond.
The crossings are unpredictable. A herd can gather at a crossing point for hours before something -- a single wildebeest's courage, a shift in wind -- triggers the stampede. Thousands of animals launch themselves into crocodile-filled water, scramble up muddy banks, and thunder across the plains. It is raw, chaotic, and utterly unforgettable.
August is peak season, which means higher prices, more vehicles at popular crossing points, and the need to book well in advance. The reward is the highest probability of witnessing a crossing.
October and November: The Return South
By October, the short rains return and the herds begin the long walk south through the eastern Serengeti. This is a quieter, less celebrated phase of the migration, but it offers excellent game viewing and fewer tourists. The landscape dries and then greens again. The herds are moving with purpose, and the predators follow.
November can be transitional and occasionally unpredictable weather-wise, but guests who visit during this period often find uncrowded camps and a more meditative experience of one of the world's great wildlife spectacles.
December: The Cycle Restarts
By December, the herds are back on the southern plains, the grass is green after the short rains, and the first heavily pregnant females are approaching term. The cycle begins again.
Practical Tips for Planning Your Great Migration Safari
- Book 12 to 18 months in advance for peak season (July to September), especially for top-tier camps
- Be flexible with dates: the herds move with the rain, not the calendar
- Combine two regions: pairing the Ndutu calving season with a Mara River crossing visit in one trip gives you the best of both worlds
- Hire a specialist operator: a guide who knows the ecosystem can position you for a crossing before the crowds arrive
- Fly between camps: light aircraft transfers save days of driving and give you aerial views of the herds
When is the "Best" Time?
There is no single best time to witness the Great Wildebeest Migration -- only the best time for what you want to see. Calving season (January to February) is quieter, more affordable, and deeply moving. The Mara River crossings (July to September) are the most dramatic and the most popular. The Western Corridor (June) offers the excitement of the Grumeti without the Mara's crowds. And the return south (October to November) suits travellers who want solitude alongside extraordinary wildlife.
The honest answer is that any month in the Serengeti or Maasai Mara ecosystem will reward you. The Great Wildebeest Migration is always happening somewhere, and wherever the herds are, the wildlife spectacle is extraordinary.
Ready to plan your migration safari? The team at Waigumo Safaris has spent years studying the rhythms of this extraordinary journey. We will match your travel dates to the right location, the right camp, and the right experience -- so you see the migration at its most magnificent. Get in touch to start planning your trip today.
