The Best Time to Visit Africa for the Great Migration

Each year, the plains of East Africa host one of the world’s greatest wildlife spectacles: the Great Migration, featuring some 1.4 million wildebeest and hundreds of thousands of zebras and gazelles. With prey, come predators: lions, hyenas, and crocodiles fix a watchful gaze in hopes of catching a cheap dinner. For travelers on a private African safari, viewing the Great Migration is a unique opportunity to appreciate a dizzying scale of wildlife moving in lockstep across an iconic landscape. Scenes of unfiltered wildlife drama unfold along this perilous journey. Some are violent, some are tender, but all are assuredly memorable.

The Great Migration flows between Tanzania and Kenya, a distance of some 1,200 miles, and is driven by the pursuit of plentiful grazing grounds and reliable water. Since this is a completely natural process that depends on weather, environmental factors, and the animals themselves, the timing and route are more of an estimation than an itinerary.

There’s a widely held misconception that the Great Migration is the time when throngs of wildebeest gather on the riverbanks of northern Tanzania and the Maasai Mara, finally erupting across the muddied waters in a harried, bottlenecked flow of beasts. Certainly, these are the Great Migration’s most spectacular and widely marketed vignettes, but they are mere moments of what actually amounts to a year-long phenomenon. It’s this narrow scope of what the Great Migration is-or rather, isn’t-that performs a disservice to travelers who are new to safari.

In reality, the plains are vast, and the animals are fickle; there is simply no way of knowing where and when the wildebeest will be at the time a traveler makes their booking-often months or years in advance. Any purported safari specialist who assures you otherwise is one you should run away from. Will you see wildebeest during peak months? It’s likely. Will you observe a dramatic river crossing? It is impossible to know until you’re buckled in and rumbling across the plains. Should you have the good fortune of encountering a crowd of wildebeest assembling upon a riverbank, whether they cross while in your audience is entirely up to them. Spoiler alert: in some cases, they hang about for days before making the leap of faith.

Suffice it to say, the Great Migration should not, and need not be, the focal point of a safari. The Serengeti and Maasai Mara are home to an abundance of resident game.

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As implied, permanent camps remain a year-round fixture of the landscape, while mobile ones move two or three times a year, based on the migration pattern. Each has its perks and drawbacks, but choosing between the two typically involves weighing assured proximity to the animals against the sumptuous features and amenities of a lodge.

To a soundtrack of thundering hooves and panicked brays, wildebeest plunge into the muddy Mara River, churning the water as sly crocodiles snap from below and lions prowl the banks. It’s a scene of raw, pulse-quickening drama - nature at its most primal, played out beneath vast African skies. But this isn’t just a spectacle, it’s part of Africa’s Great Migration, a world-renowned wildlife phenomenon where more than a million wildebeest, along with countless zebras and gazelles, follow the rains across Tanzania’s Serengeti and Kenya’s Maasai Mara in a relentless quest for greener pastures.

And it’s not just predators drawn to the chaos, with the migration pulling in travellers from across the globe. But with growing attention comes growing responsibility, and sustainable travel is playing an ever more crucial role in protecting this extraordinary event. Here’s everything you need to know before you go.

Every year, vast herds of wildebeest, zebra and gazelle traverse the Greater Serengeti-Mara ecosystem - a sweeping landscape of around 444 square miles. Guided by a mix of instinct, survival and the rhythms of the rains, the animals follow a circular route in constant pursuit of fresh grazing. Estimates of their combined numbers vary, ranging from one to two million, but one thing is certain: witnessing this epic journey in motion is an unforgettable experience for any wildlife lover.

The Great Migration is often presented as a clockwise circuit with wildlife cycling between Tanzania’s Serengeti in the south and Kenya’s Maasai Mara in the north, and taking place between May and December. In reality, this illustration is an oversimplification of a complex phenomenon. As with anything that moves with the rhythms of nature, the Great Migration circuit should be interpreted as a pattern rather than gospel.

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“Disregard any pretty map you may have been shown that has a tidy flow of animals going round in an annual circle,” cautions Richard. “The Migration does not work like this. It is driven entirely by standing water, grazing and created by local weather conditions.”

Still, there are some general guidelines for when and where to visit. Even if you attempt to see the migration when it isn’t following its “normal” pattern due to an unusually dry or wet season, odds are high that you’ll most likely see thousands of wildebeest, zebras, and gazelles in any given area. “The Migration is not a continuous forward motion,” explains Migration expert Richard Knocker, one of Nomad Tanzania’s best private guides. “They go forward, backwards, and to the sides. They mill around, they split up, they join forces again. They walk in a line, spread out, or they hang around together. You can never predict with certainty where [wildlife] will be.

Still, there are some guidelines for when and where to visit. Generally speaking, the Migration is observed as moving from Tanzania’s southern Serengeti, north through the Western Corridor and up to the Maasai Mara. The animals close the loop, arriving back at their southern Serengeti calving grounds via the Lobo Area or Loliondo Game Controlled Area in Tanzania.

That said, even if travelers observe the Migration when it isn’t following the “normal” pattern (think: an unusually dry or unusually wet season), wildlife viewing in any given area-whether Kenya or Tanzania-is still abundant. As the grassy plains of the southern Serengeti begin to dry out, the animals move north in search of sustenance and reliable water sources.

“They will leave this area as late as possible and come back as soon as they can,” Richard explains. “This means that every year is different. In fact, every week can be different.”

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Typically, the first animals start setting out in April. Over the following months, they’ll navigate countless obstacles, from predators to river crossings. From December to April, the wildebeest prefer the short, grassy plains of the southern Serengeti where the cropped vegetation offers predators less cover. Depending on localized rainfall, herds can be seen anywhere from the Moru Kopjes of the Central Serengeti to the slopes of the Ngorongoro Crater in the south.

What’s more, the volcanic soils that anchor these plains produce grass rich in minerals, formulating nutritious milk for the approximately 500,000 wildebeest and zebra born here each spring.

“Within a relatively short space of time, perhaps four to six weeks, several hundred thousand calves will be born,” says Richard, “This is when we see much of the dramatic predator action.”

Most of the calves arrive in February and March. Once the rainy season is over, the south and east plains of the Serengeti dry out, prompting the beginning of the Migration. This usually starts in April or May when herds begin to move north and west, although not always as one cohesive group.

“Not all the wildebeest and zebra will follow the same route,” Richard points out. Between July and August, the wildebeest move en masse into Kenya’s Maasai Mara, crossing the Mara River in staggering numbers. For travelers, river crossings rank among the most sought-after moments of the Great Migration.

If the cacophony of anxious wildebeest making a perilous river crossing tops your safari bucket list, plan your Great Migration trip for summer. However, it is important to acknowledge July, August and September represent peak travel season. In order to secure your preferred lodgings and operator, you will want to book 12 to 18 months out.

In a dry year, the first wildebeest can reach the Mara River (the only decent, permanent source of water in the ecosystem) as soon as early July; in a wet year, it may be as late as mid-August. If conditions are very good-grass and water are plentiful-the herds will spread out all the way from Seronera to the Mara River.

“The wildebeest are easily spooked by real or imagined threats. They fear crossing the river, as they have an inkling that something lurks there,” Richard describes. “Patiently waiting near a herd may only produce a puff of dust as they turn on their heels and run away. Or maybe the herd is not ready to cross the river and they are milling around contentedly. But if everything is right, then there is utter and extraordinary chaos as the herd struggles to get to the other side of a major river filled with crocodiles.”

In fall, the Migration starts to work its way south into Tanzania, so there will be plenty of wildlife spotting in popular safari destinations like Kenya’s southern Maasai Mara and in northern Tanzania.

“The Migration as a whole need not all pass into Kenya, and many stay behind or cross and re-cross the border areas. This carries on until October and November when they will start thinking of heading back. The name itself, the Great Migration, infers animals are on the move. Anecdotally, it’s a lot like watching your friend run a marathon: you either wait for them at mile 18 or follow them along the route, high-fiving them every chance you get. “In Africa, participating in the Great Wildebeest Migration is less about standing on a corner, and more about setting up camp-literally, at either a permanent or mobile property.

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Wildebeest can sniff out rainfall and the promise of fresh grasses from miles away. Though climate change is making weather patterns less predictable, the ancient route of their odyssey remains unchanged. The migration typically begins in the southern Serengeti and neighbouring Ngorongoro Crater Conservation Area, where the rains transform the plains into a maternity ward for the herds. February offers a different perspective on the migration, with some 500,000 calves born in just a few weeks. Predators, of course, are never far behind, waiting for easy pickings among the wobbly newborns.

From April, the herds begin their journey north, moving through the Moru Kopjes - dotted with striking granite outcrops - and into the Seronera region, the heart of the Serengeti. By June, they reach the Western Corridor and the Grumeti River, before pushing on towards Kenya’s Maasai Mara between July and August. But before they can enjoy its lush pastures, they must brave the treacherous crossings of the Mara River, sometimes more than once, as they respond to scattered rains.

Once in the Mara, the herds disperse across the reserve, from the Mara Triangle to the Musiara and Sekenani sectors and spill into surrounding conservancies. By October, as the grasses begin to wither, the journey turns south once more. The wildebeest cross back into Tanzania, reaching eastern Serengeti, then gradually drift towards the southern plains, ready to calve again in the new year, continuing their eternal cycle of migration.

If you’re hoping to witness the Great Migration in the Serengeti or Maasai Mara - especially during peak season, from June to October - it’s essential to plan well in advance. Lodges and camps often book up a year or more in advance and safari vehicles can jostle for space along the riverbanks as travellers vie for the best vantage points.

While it’s possible to travel independently, organising a migration safari can make the experience far easier. There are many options available, and the process can be complex and expensive, so it’s well worth enlisting the help of a responsible, specialist Africa tour operator. These experts can tailor your itinerary, arrange bush flights or 4x4 transfers and match you with the best camps and lodges for your budget. Recommended operators include Yellow Zebra, Expert Africa, Mahlatini, Far & Wild Travel and Wild Paths, and for family safaris, Coral Tree Travel.

Direct flights from London to Kenya are available with Kenya Airways to Nairobi’s Jomo Kenyatta International Airport. For Tanzania, fly via Nairobi or Addis Ababa (with Ethiopian Airlines) and transfer to Kilimanjaro International Airport.

Choosing the right accommodation is essential for a responsible and rewarding safari experience. Where possible, avoid large, budget international hotels in favour of boutique lodges or intimate camps that prioritise sustainability. Many of these properties actively support local communities and conservation efforts, while offering exceptional safari experiences.

In Tanzania, consider options such as Wayo Africa and Wilderness Usawa, which operate mobile safari camps that follow the migration and provide access to private wilderness areas that are ideal for walking safaris. Asilia Africa is another leader in sustainable tourism, pioneering camps in previously undeveloped areas, including Sayari in northern Serengeti, Namiri Plains in the east and Dunia in Seronera, which proudly employs Tanzania’s only all-female team.

In the Maasai Mara, staying within community-owned conservancies neighbouring the reserve offers both exclusivity and a deeper connection to the land and its people. Local communities combine their land parcels to host a limited number of high-end camps, generating income through lease fees, conservancy levies and employment, while restoring vital wildlife habitat. Though prices may be higher, guests benefit from fewer crowds and exclusive activities such as night drives, walking safaris and full-day game drives to the iconic river crossings. Operators like Kicheche, Porini and Asilia Africa have played pivotal roles in establishing these conservancies and maintaining genuinely beneficial relationships with local communities.

It’s becoming easier to identify truly sustainable operators, especially those who publish detailed impact reports or transparent newsletters. However, some may still offer only lip service to sustainability claims. Always check reviews carefully and ask questions if their commitments seem vague.

Traditional safaris often involve early starts, bumpy drives and frequent moves between camps, sometimes requiring eco-unfriendly bush flights. Consider a ‘slow’ safari instead, staying in one camp for an extended period. This approach benefits the environment, supports local economies and allows you to unwind and deepen your connection with the natural world.

Many camps offer walking safaris, providing an intimate way to discover smaller wildlife, insects and birds away from the crowds. For a unique perspective, try a hot-air balloon safari - there’s nothing quite like drifting above the migration at dawn. Or simply take a day off to relax at camp, watching wildlife from the comfort of the pool.

While some village visits can feel like awkward tourist traps, camps with genuine community ties offer meaningful encounters. These experiences allow you to learn about local cultures and enjoy the warmth and hospitality of the people who call this land home.

Avoid contributing to chaotic vehicle scrambles around sightings or river crossings. Wildlife should never be distressed or disturbed for our entertainment. Respectful viewing ensures these animals remain wild and free.

Every year, travelers flock to Kenya in July and August, hoping to witness the Great Migration when over 1.5 million wildebeest, 250,000 zebras, 300,000 Thomson’s gazelles and other antelope species migrate between the southern Serengeti and Maasai Mara, chasing fresh grazing land.

However, Maasai Mara National Reserve is overwhelmed during these months, receiving double the park’s intended capacity. This often leads to overcrowded game drives, stressed wildlife and a far less exclusive safari experience than you may have wanted.

David Guthrie, founder of the eco-conscious safari company A Tent With A View, says, “It is dreadful to witness. Hundreds of safari vehicles swarm the Mara River, all competing for the best view of the animals. Some even encroach on the animals' path, blocking them as they prepare to make the dangerous crossing. And many don't survive the leap.”

While many consider the river crossing season the most thrilling part of the Great Migration, Guthrie sees them as a symbol of unsustainable and unethical tourism. "The Great Migration is a year-round phenomenon, and there is a much more incredible-and ethical-time to witness it," he says.

With overcrowding threatening both wildlife and visitor experience, authorities at Maasai Mara National Reserve (MMNR) have already implemented several measures beyond on-the-spot fines.

In June 2024, the Reserve prohibited private vehicles from entering its boundaries. Now, it only permits authorized safari vehicles.

As of July 2024, entry fees of MMNR for non-resident visitors were significantly raised from $80 for a 24-hour ticket to $200 for a 12-hour ticket and $400 for a 24-hour ticket. Meanwhile, the fees for other parks (Ambroseli, Nairobi, Lake Nakuru and Tsavo East/West National Parks) are kept low to hopefully divert traffic there.

The Ministry of Tourism and Wildlife has already hinted at future plans in its Tourism Strategy 2021-2025, including digital ticketing, mandatory advanced booking and a daily cap on visitor numbers.

"More needs to be done to ensure crossing points are not obstructed. The tourist experience should never trump the well-being of wildlife-and in fact, overcrowding will only diminish the tourist experience. When wildlife is respected, with the space to roam and behave naturally, everyone wins," says Justin Frances, co-founder of Responsible Travel.

The travel experts I interviewed agreed that calving season is the best time to witness the Great Migration.

The migrating herds are in the Southern Serengeti from December to March. But February is when over 500,000 wildebeest calves are born within a matter of weeks, along with all other species of the Serengeti.

“The sight of all baby animals, and how they play and their protective mothers care for them, makes this a magical time to visit," says Guthrie.

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