Tanzania Safari in May
On June 1, lodge rates across northern Tanzania step up by a third. The wildebeest do not check the calendar. In the last ten days of May the rains are easing, the columns are marching northwest toward the Grumeti in lines that can stretch 40 kilometres, the rut is at full volume, and a lion sighting draws five vehicles where August draws forty. Late May is the smartest booking on the Tanzania calendar, and almost nobody makes it.
Plan a May Safari
Wildlife Conditions in May by Park
Serengeti: Central, then Western Corridor
GoodBig rutting columns move through Seronera toward the Grumeti through the month. Resident cats reliable in the centre. By the final week, advance herds reach the Grumeti's south bank and early crossing attempts are possible. Black-cotton stretches in the corridor stay difficult until late month.
Ngorongoro Crater
ExcellentThe quiet-season crater is the best version of the crater: the full resident cast of lion, elephant, hippo, and black rhino, wildflowers after the rains, and very few vehicles on the floor. May is its most underrated month.
Lake Manyara
GoodImproves through the month as the rains ease and game becomes more accessible. Excellent birding carries over from April.
Tarangire National Park
FairDispersal continues but the first elephants drift back to the river as the seasonal swamps recede. Peak birding. The June concentration is coming; May is its overture.
Ndutu / Southern Serengeti
FairEmpty of migration, camps closed, tracks reopening late month. Resident game only.
Week-by-Week: May in the Field
| Week | What's Happening | Best Location |
|---|---|---|
| May 1-7 | Heavy columns moving through the central Serengeti heading northwest. Rains still active but already lighter than April. | Central Serengeti / Seronera |
| May 8-14 | The main body enters the Western Corridor. Forty-kilometre columns, the rut in full swing, bulls fighting along the line of march. | Western Corridor (Mbalageti) |
| May 15-21 | Herds filling the country between Kirawira and the Grumeti's south bank. The rut at maximum volume; you hear it before you see it. | Kirawira / Sabora |
| May 22-31 | Advance herds at the Grumeti south bank, crocodiles stirring, and the first crossing attempts possible. The value window of the year before June 1 rates. | Grumeti south bank |
Weather in May by Location
| Location | Temperature | Rainfall | Notes |
|---|---|---|---|
| Arusha | 11°C morning / 22°C afternoon | ~80-120mm over ~11-14 days | Long rains active early month, tapering clearly by late May |
| Central Serengeti (Seronera) | 15°C morning / 25°C afternoon | ~68mm over ~15 days | Drying through the month, still muddy in the corridor early on |
| Ngorongoro Crater Rim | 10-15°C dawn / 24°C midday | ~37mm over ~14 days | Rains easing fast. Cool dawns on the rim; bring a fleece. |
| Zanzibar | 24°C night / 29°C day | ~290mm over ~16 days | Still heavy early May, easing late. Push beach plans to late June. |
The June 1 Cliff: Why Late May Is the Year's Smartest Booking
Most safari lodges switch from green-season to high-season rates on June 1, and the step is steep: roughly a third at many properties. The wildlife does not change overnight. A May 26 departure and a June 5 departure see the same corridor, the same columns, the same rut, the same drying plains. One of them costs a third less per night.
The last ten days of May stack every advantage at once: the rains are visibly tapering, the black-cotton is drying out, camps are reopening and happy to see you, the herds are massing toward the Grumeti, and early crossing attempts are possible at the south bank. The only people who know this are repeat travellers and the guides themselves. It is the booking I recommend to anyone whose dates can flex even a week.
What May Sounds Like: The Rut
The wildebeest rut peaks as the herds move through the Western Corridor, and it is as much an audio experience as a visual one. Hundreds of thousands of animals on the move, the bulls grunting and calling around the clock, fighting along the line of march, herding females in running skirmishes. The columns can stretch 40 kilometres. Predators shadow the whole procession, and rut-exhausted bulls are exactly the prey lions prefer.
It is a completely different spectacle from the river crossings: less famous, longer-lasting, and viewed with a fraction of the audience. A lion sighting in May draws five or ten vehicles. The same sighting in August draws forty or fifty. If solitude is part of what you are paying for, May delivers more of it per dollar than any month except April, with better weather than April.
May Itineraries
8-Day Classic Tanzania Safari
From $2,355 pp8 Days / 7 Nights
Tarangire · Serengeti · Ngorongoro
Positioned for May with the Serengeti nights weighted central and west toward the moving columns, and the crater as the all-weather anchor.
View Full Itinerary5-Day Northern Circuit
From $1,605 pp5 Days / 4 Nights
Tarangire · Serengeti · Ngorongoro
At May rates this is the cheapest full northern circuit of the year. Short, sharp, and quiet.
View Full ItineraryCommon Questions: Tanzania Safari in May
Is a May safari worth it?
May is arguably the highest-value month of the year: the lowest prices, near-empty parks, emerald landscapes, and the migration marching through the western Serengeti in columns that can stretch 40 kilometres. Rains ease through the month, and the final ten days often run dry. The trade-offs are real but manageable: some premium camps stay closed until June, and 4WD is essential on corridor tracks.
Where are the wildebeest in May, and can I still see the migration?
Moving from the central Serengeti into the Western Corridor, toward the Grumeti River. The calving spectacle is over, but the marching columns with the rut at full volume are genuinely impressive, and late May can bring the first small Grumeti crossing attempts. This is a moving target, so a guide with daily field information matters more than a fixed route.
How much cheaper is May than peak season?
Lodge rates run roughly 30 to 50 percent below July through September, and the step back up happens on June 1, when most camps switch to high-season rates that are about a third higher. Park fees never change. Our 5-day Northern Circuit from $1,605 per person and 8-day Classic from $2,355 per person both price at their yearly low in May.
Is May too rainy for safari?
Early May still carries the tail of the long rains. By mid-to-late month the pattern is clear mornings with occasional afternoon showers, and the last week is often effectively dry. The corridor's black-cotton sections stay soft the longest, which is a routing problem your guide solves daily, not a reason to skip the month.
Which camps are open in May?
Closed through May: Nomad Lamai, Asilia Sayari, Olakira, and Ubuntu, Serengeti Bushtops, and Singita Mara River, most reopening June 1. Open: the permanent lodges plus central-Serengeti camps like Asilia Dunia and Kubu Kubu. The shortlist is smaller but the camps that are open sit in exactly the right country for the moving herds.
How does May wildlife compare to the dry season?
Different rather than worse. You trade the dry season's waterhole concentrations and short grass for green landscapes, the rut, marching columns, peak birding, and solitude: five to ten vehicles at a big sighting instead of forty or fifty in August. What you genuinely give up is the Mara River crossing drama, which belongs to July through September.
Should I add Zanzibar in May?
Not ideally. The coast stays wet into late May with rough seas. If the beach matters, push it to late June onward, or take the May safari savings and book a longer dry-season beach trip separately. Boat safaris in Nyerere (Selous) are actually better in May's high water, if a southern add-on appeals.