The Great Wildebeest Migration:
everything you need to know
Over 30 years ago, I witnessed my first wildebeest migration crossing at the Mara River – one of those sights that changes you forever. The herd had been pacing the bank for hours – thousands of animals, driven by nervous energy and ancient instinct, but none willing to be the first to go. Then, suddenly, one plunged in, and the rest followed in a thundering cascade. The river turned into a surging mass of bodies, and crocodiles appeared from nowhere – it was chaos. It’s the sound that’s etched into my memory – the deep, guttural grunting of wildebeest, the sharp bark of zebras, and the thundering splash of hooves hitting water. Heart-stopping moments as a young calf was carried downstream, perilously close to a waiting croc, until it finally reached the bank and safety. I’ve been back to watch it many times since, and it never loses its power.
The great wildebeest migration is rightly called the greatest wildlife spectacle on earth. If it’s on your radar – and if you’re reading this, it almost certainly is – this guide will tell you everything you need to plan your trip well. What the wildebeest migration actually is, where it goes month by month, when to go for the experience you’re after, and why your choice of location matters as much as the timing.
What is the Great Wildebeest Migration?
Each year, more than 1.5 million wildebeest, along with roughly 300,000 zebra and gazelle, move in a continuous clockwise circuit across the Serengeti ecosystem in Tanzania and the Maasai Mara in Kenya. They’re following the rain – or more precisely, the fresh grass that the rain produces.
It’s not a single event but a year-round movement, thousands of animals, driven by ancient instinct. What makes it extraordinary is the scale. The Serengeti-Mara ecosystem covers some 40,000 square kilometres, and for most of the year, the plains are alive with moving herds. But there are key moments – calving season, the river crossings, the return south – that are almost impossible to describe. This guide will help you find them.
Month-by-month: where the wildebeest migration is and what you’ll see
The wildebeest migration follows a broadly predictable pattern, though it’s worth knowing upfront: this is wildlife, and wildlife doesn’t follow a schedule. Rainfall shifts year to year, and so does the precise timing of every movement. What doesn’t change is the overall rhythm of the journey.
January and February – calving season, southern Serengeti
The short rains of November and December draw the herds south into the Ndutu area of the southern Serengeti and Ngorongoro Conservation Area, where the short-grass plains are covered by a lush green carpet. By January, roughly 400,000 calves are born in a concentrated window of just three to four weeks – as many as 8,000 in a single day.
This is a deliberately overwhelming strategy. Predators simply cannot eat that many calves at once, so the majority survive by sheer weight of numbers. For visitors, it’s one of the most moving things you’ll see in Africa: tiny calves taking their first wobbly steps within minutes of birth, mothers nudging them to their feet, and cheetah and lion moving through the edges of the herd with cold efficiency, intent on feeding their cubs.
If you want to see predator-prey interaction at its most raw, calving season is unbeatable. The Ndutu area is also considerably less crowded than the northern Serengeti in July and August.
March and April – the herds begin to move northward
As the rains ease and the southern grasses are grazed out, the herds begin their long march north and west. March and April bring the long rains to the central Serengeti, and the movement is gradual – the animals spread across a wide front, following fresh growth.
April is generally considered a shoulder month for safari travel. It rains, the tracks can be muddy, and some camps close for maintenance. But the upside is far fewer vehicles, lower prices, and the landscape at its most green and alive. Predator activity remains excellent, and the Serengeti in the rain is one of its most photogenic moods.
May and June – the western corridor and the Grumeti River
By May, the leading herds have reached the western corridor of the Serengeti, and a preview of what awaits them at the Mara River plays out at a smaller scale: the Grumeti River. Massive Nile crocodiles patrol these channels, and the crossings here – though less dramatic than the Mara – are electrifying for those who witness them.
June sees the herds consolidating in the western and central Serengeti, building in number before the push north. This is an excellent time to visit if you want migration sightings without the peak-season crowds of July and August, and accommodation prices reflect that.
July and August – the Mara River crossings (peak season)
This is the moment most people have in mind when they think “migration.” By early July the herds are converging on the Mara River, the single greatest obstacle between them and the fresh grass of the Maasai Mara in Kenya.
The crossings that happen here are the most dramatic wildlife event I know. Thousands of animals plunge into fast-moving water thick with crocodiles; some make it, some don’t. The crossings can happen multiple times a day or not at all for days on end – everything depends on the animals’ mood, and no guide or operator can guarantee one. But the waiting is half the experience. You sit in your vehicle on the riverbank, watching the herd pace and bunch, and the tension is palpable.
July and August are peak season. The Mara River crossing points inside the Maasai Mara National Reserve can be extremely busy, with lodges full and dozens of vehicles jostling for position. This is one reason private conservancies adjoining the Mara are always my first choice for guests, rather than inside the reserve itself – more on that below.
September and October – the herds fill the Maasai Mara
By September the bulk of the herds have crossed into Kenya. The Maasai Mara fills with wildebeest, zebra, lion, leopard, and cheetah in extraordinary concentrations. September and early October offer some of the best all-round wildlife viewing in Africa, with more manageable crowds than July and August.
River crossings can still happen in both directions as animals move back and forth across the Mara. October brings the short rains, which start to nudge the herds south again.
November and December – the wildebeest migration returns south
As rain falls again on Tanzania’s southern plains, the wildebeest follow it back to the Ndutu area. This southward return is less dramatic than the Mara crossings but no less real: vast columns of animals moving through the central Serengeti, the landscape greening around them. By December the cycle is complete and the herds are back in the south, preparing for calving season.
November and December are another excellent value window for Tanzania safaris – green season pricing, beautiful light, and the remarkable sight of the Serengeti coming back to life, thanks to the rains.
Serengeti or Maasai Mara – does it matter which side of the border you’re on?
The short answer: it depends what you want, and when you’re travelling.
Tanzania’s Serengeti has the migration for most of the year. The calving season (January–February) and the southward return (November–December) happen entirely in Tanzania. The Grumeti River crossings (May–June) are in Tanzania.
Kenya’s Maasai Mara is the stage for the most famous river crossings (July–October). The Mara is also generally considered to have a higher density of big cats year-round – the open grassland makes spotting easier – and the Maasai cultural experience in Kenya is exceptional.
Many of my guests combine both – see below for some suggestions.
Why private conservancies change everything about migration viewing
This is something I feel strongly about, having watched the Mara River crossing scene change dramatically over the decades I’ve been escorting safaris.
Inside the Maasai Mara National Reserve, popular crossing points in peak season are chaotic. It is not uncommon for 100 (even up to 300) vehicles to gather at a single, very active crossing point. I’ve watched guides jostling their vehicles for prime position, and tourists encouraging guides to break park rules to get that shot for their Instagram page. The animals – and the experience – suffer for it, and the intimate wildness of the encounter is completely lost in the noise.
Private conservancies bordering the Mara National Reserve operate under completely different rules. The number of vehicles is strictly limited. Guests staying inside these conservancies have exclusive access to game drives within the conservancy – other vehicles are not permitted. You can follow an animal off-road, which is banned in the reserve. Night drives are permitted. Walking with guides is possible.
The wildlife has noticed. Lions, leopards, and cheetah are increasingly choosing to spend time in the conservancies rather than the reserve, precisely because they aren’t harassed. The big cat sightings in Lemek and Mara North – where our Kenya’s Private Conservancies safari is based – are consistently outstanding, and this area offers quick access to the Musiara area or the river banks.
Conservancy guests can take a full-day game drive into the National Reserve to witness the river crossings, allowing you to enjoy the exclusivity of the conservancy for private game viewing in the morning and the migration action later.
A word of honesty: if a river crossing is your priority, vehicle crowds are unavoidable. But if you want to feel part of the wildebeest migration rather than a spectator to it, a private conservancy isn’t an upgrade – it’s the difference that matters.
How to plan a wildebeest migration safari from New Zealand or Australia
The most important thing is to book early – ideally 12 to 18 months in advance for peak season (July–August). Premium small-group camps in the conservancies have very limited capacity, and the best tents at the best locations fill up fast. I’ve had guests contact me in April wanting to go in July and I haven’t been unable to get them into the camps I’d recommend. Availability at six months out is very limited.
The journey from New Zealand and Australia to either Tanzania or Kenya routes through Dubai, Doha, or Addis Ababa. Emirates, Qatar, and Ethiopian Airlines all offer connections with a single stopover. Alternatively, Qantas and Air New Zealand have flights to Johannesburg, with good connections from there to Kenya or Tanzania. Kilimanjaro International Airport (for Tanzania) and Nairobi’s Jomo Kenyatta Airport (for Kenya) are both well-served.
See the migration with African Encounters
Our Tanzania Northern Highlights safari spends time in the Serengeti’s northern corridor – the Kogatende area, home to the Mara River crossings – as well as the central Serengeti, Ngorongoro Crater, and Tarangire. It runs with daily departures, with a maximum of eight guests, and uses 4×4 safari vehicles throughout.
For Kenya, our Kenya’s Private Conservancies signature safari spends time in Lemek and Mara North conservancies, positioning guests for migration viewing with far fewer vehicles and far greater access than the national reserve.
Or combine both countries on our Best of Kenya & Tanzania Under Canvas safari for an exceptional East Africa journey.
African Encounters is a New Zealand-owned specialist safari company with a maximum group size of ten guests and a focus on private conservancies, ethical travel, and conservation. Owner and founder Karen Platzer has been escorting small-group safaris to East and Southern Africa for over three decades. Get in touch to plan your wildebeest migration safari.
