The Great Migration from Australia & New Zealand: Kenya & Tanzania Timing & Itinerary

Right through this winter — July, August, September — wildebeest are massing on the banks of the Mara River and crossing in their thousands, crocodiles waiting below. The Great Migration is the safari event Australians and New Zealanders most often build an entire trip around, and also the most misunderstood: the herds never stop moving, so the real planning question is not whether to see the migration but where it will be when you can travel. This guide maps the migration month by month, weighs the Kenyan and Tanzanian sides of the border, and works through the itinerary logistics from our side of the Indian Ocean.

How the migration actually works

Around 1.5 million wildebeest — with hundreds of thousands of zebra and gazelle alongside — move in a continuous, roughly clockwise loop around the Serengeti–Masai Mara ecosystem, following the rain and the fresh grass it brings. It is not an event with a start date; it is a 12-month cycle with different spectacles in different places. Calving happens on the southern Serengeti plains in late January and February, the famous river crossings happen in the north from about July to October, and the months between are spent walking, grazing and being hunted. The most useful planning insight follows directly: there is no wrong month to see the migration — only a wrong place for the month you have chosen.

Month by month: where the herds are

Positions shift with each year's rains, sometimes by several weeks, so read this as a strong pattern rather than a timetable — and build a night or two of margin into any crossing-focused trip.

Two timing notes worth underlining. First, the crossings are not one grand event — herds cross the Mara River in groups, in both directions, over roughly three months, which is why a well-placed three- or four-night stay gives you honest odds. Second, October deserves more attention than it gets: the herds are usually still in the north, the light is superb, and the August–September vehicle peak has passed.

Mara or Serengeti: which side of the border?

The border between Kenya's Masai Mara and Tanzania's Serengeti is invisible to a wildebeest and decisive for your itinerary: there is no tourist crossing point between the two parks, so you commit to a side — or connect between them the long way, via Nairobi and Arusha.

The Kenyan case is compactness. The Mara is a fraction of the Serengeti's size, which keeps game drives short and puts you close to the river; the herds are resident roughly July or August through October; and access is a 45-minute light-aircraft hop from Nairobi's Wilson Airport. The famous crossing points do draw a crowd in August and September, and the answer to that is the private conservancies bordering the reserve — fewer vehicles, off-road driving and night drives, with the river still within reach. A dawn balloon flight over the herds is the Mara's signature extravagance.

The Tanzanian case is flexibility. The migration spends ten to eleven months of the year somewhere in the Serengeti, so it forgives a much wider range of travel dates — calving in the south in February, the Grumeti in June, the Mara River in the north from July to October. The northern riverbanks generally see fewer vehicles than the Kenyan side, the distances are bigger (internal flights between airstrips matter), and the classic add-ons are strong: the Ngorongoro Crater, elephant-rich Tarangire, and Zanzibar to finish.

Getting there from Australia and New Zealand

There are no non-stop flights from Australia or New Zealand to East Africa, but the one-stop options are mature. From the east coast the usual pattern is via Doha, Dubai or Johannesburg into Nairobi; Perth shaves hours off the total; from New Zealand, add a trans-Tasman leg or connect through the same hubs. Door to camp, allow a solid 24 hours — and plan an overnight in Nairobi on arrival rather than pushing straight through to the bush jet-lagged.

Nairobi is the region's hub. For the Mara, light aircraft leave Wilson Airport through the morning for the reserve's airstrips. For the Serengeti, connect onward to Kilimanjaro International near Arusha, then take a light aircraft into the park — in crossing season, to the airstrips serving the far north. Book the safari before the international flights if you can: camp space, not airline seats, is the scarce resource between July and October.

Practicalities: light aircraft enforce soft-sided luggage of around 15kg, so pack for the safari and leave the hard case at a Nairobi hotel; both countries issue eVisas online, best applied for a few weeks out; and check current yellow fever certificate requirements for your specific itinerary before you fly.

How long to allow

Seven nights on the ground is the sensible minimum; nine or ten is better. The shape that works: land, overnight in Nairobi, then three or four nights in migration country — riverbank territory if crossings are the goal — followed by two or three nights of contrast: the Ngorongoro Crater on the Tanzanian side, or a private conservancy on the Kenyan. If leave allows, finish on a beach — Zanzibar or the Kenyan coast are both short flights from the safari circuits. After twenty-plus hours of flying each way, a five-night safari is a long way to go for a short stay.

When to book

The camps within reach of the river in crossing season are small — often a dozen tents or fewer — and the best of them sell out nine to twelve months ahead. If you are reading this in late July, the realistic windows look like this: October this year is still genuinely bookable, with the herds usually still in the north and the September crowds gone. For July to September 2027, the sought-after camps begin filling from around October this year — that is the booking window that matters most. Calving season, in late January and February, holds space a little longer but rewards the same early commitment.

What a crossing day actually looks like

It is worth knowing the rhythm before you go, because it sets expectations. Mornings start early — coffee before dawn, then out along the river as the herds gather on the banks. The build-up is the show: thousands of animals pressing forward, balking, retreating, testing the water for an hour or more while the crocodiles drift closer. When one animal finally commits, the river turns to churning bodies in minutes — and then, just as suddenly, it is over. Some days deliver three crossings; some days deliver none, and you spend the afternoon instead with elephant, lion and the general density of game that makes these two parks extraordinary even without a single wildebeest in the water. Travellers who arrive expecting a scheduled performance leave frustrated; travellers who give the river three or four days almost always leave with the story they came for.

Frequently asked questions

Can a river crossing be guaranteed? No — and be wary of anything that implies otherwise. Herds can mass on a bank for hours and turn away. The honest approach is to stay within reach of the river for three or four nights and let your guide read the build-up each morning; over that stretch in peak season, your odds are genuinely good.

Is the migration worth seeing outside July–September? Emphatically. Calving season on the southern plains in late January and February is the ecosystem's other great spectacle — thousands of wobbling calves, and the highest concentration of hunting big cats you will see anywhere in Africa — with greener scenery and fewer vehicles.

Kenya or Tanzania if you can only choose one? Travelling between July and October with limited time, the Mara delivers the most migration per day of leave. If your dates fall outside that window, or you want the Ngorongoro Crater or Zanzibar in the same trip, the Serengeti is the answer.

Planning your migration safari

The migration rewards precision — the right month, the right side of the border, the right stretch of river, and a camp that puts you there when it counts. Not sure which combination fits your dates? Pack Ya Bags' planning desk matches Australian and New Zealand travellers to the month and the riverbank that suit them, and takes care of the flights, hops and margins in between. Start the conversation via info@packyabags.com — your travel agent can also request a Pack Ya Bags itinerary for you.