The Great Wildebeest Migration moves continuously through the Serengeti ecosystem. There is no single place where the herds remain throughout the year. As a broad guide:
- January–March: Southern Serengeti and Ndutu area
- April–June: Moving north through the central and western parts of the Serengeti
- July–October: Northern Serengeti and Mara River region
- November–December: Moving south through the eastern and central Serengeti toward the southern plains
The exact timing changes with rainfall and grazing conditions. If your main goal is calving, the best period is generally February–March in the Southern Serengeti. For the Grumeti River, roughly May–June in the Western Corridor is relevant. For Mara River crossings, roughly August–October in the Northern Serengeti is the strongest window. However, none of these events can be guaranteed on a specific date.
Great Wildebeest Migration at a Glance
The table below provides a general migration guide. It is not a guaranteed month-by-month location map. The exact location varies each year.
| Month | Likely Herd Area | Main Migration Activity | Recommended Tanzania Safari Area |
|---|---|---|---|
| January | Southern Serengeti / Ndutu | Calving season begins | Ndutu / Southern Serengeti |
| February | Southern Serengeti / Ndutu | Peak calving | Ndutu / Southern Serengeti |
| March | Southern Serengeti moving north | Late calving and northward movement | Southern/Central Serengeti |
| April | Central/Western Serengeti | Movement toward western grazing areas | Central / Western Serengeti |
| May | Western Corridor | Northward movement; Grumeti area | Western Corridor |
| June | Western Corridor | Grumeti River area and continued northward movement | Western Serengeti |
| July | Northern Serengeti | Herds approach Mara River | Northern Serengeti |
| August | Northern Serengeti / Mara River | River crossings possible | Kogatende / Lamai |
| September | Northern Serengeti / Mara River | River crossings continue | Northern Serengeti |
| October | Northern Serengeti moving south | Late crossings and return movement | Northern/Central Serengeti |
| November | Eastern/Central Serengeti | Southward movement | Eastern/Central Serengeti |
| December | Southern Serengeti / Ndutu | Herds return to southern plains | Southern Serengeti / Ndutu |
January — Southern Serengeti and Ndutu
In January, the herds are generally concentrated in the Southern Serengeti and the Ndutu region as they take advantage of nutrient-rich grazing following the short rains. Many females are pregnant, and the herds are preparing for the calving period.
Recommended areas include the Southern Serengeti, Ndutu, and surrounding plains. The main experience is large concentrations of wildebeest, grazing herds, pregnant females, and potentially early calving activity. Calving does not always begin on a specific date.
February — Peak Calving in Southern Serengeti
February is generally the heart of the calving season. The Southern Serengeti and Ndutu area are major locations for newborn wildebeest, grazing herds, predator activity, and dramatic predator-prey interactions. The nutrient-rich southern plains provide important grazing during this period.
February can be an excellent month for travelers interested in calving, predators, and large herds. It is not the only calving month; calves are born over a wider window depending on conditions.
March — Late Calving and the Beginning of Northward Movement
The herds can still be found across the Southern Serengeti and Ndutu region in March, although movement gradually begins toward the north as conditions change. Some herds may begin moving through the Southern Serengeti, Central Serengeti, and areas toward the western route.
March is a transition month. The exact timing depends on rainfall and grazing. Travelers should not expect every herd to be in exactly the same area.
April — Movement Toward the Western Serengeti
April generally marks a stronger transition away from the southern plains. The herds begin moving northward and westward as seasonal conditions change. Likely areas include the Central Serengeti, Moru area, Western Serengeti, and areas approaching the Western Corridor.
The herds become more dispersed during this phase. It is not a single synchronized movement, and different groups can be in different locations.
May — Western Corridor and Grumeti Direction
By May, significant portions of the migration are moving through the Western Corridor. The Grumeti area becomes increasingly relevant as the herds continue north. Potential highlights include huge moving herds, long lines of wildebeest, predator activity, changing landscapes, and early Grumeti River activity depending on conditions.
A Grumeti River crossing is not guaranteed. The herds may approach, wait, or move around depending on water levels and grazing.
June — Western Corridor and Grumeti River
June is commonly associated with the Western Corridor and Grumeti River area. Some herds may reach or cross the Grumeti River, while others can still be farther south or already moving north. The migration is spread out; there is no single herd moving as one perfectly synchronized mass.
June can be particularly interesting for travelers who want migration movement and possible river-crossing action without focusing exclusively on the Mara River. Grumeti crossings do not happen every year at exactly the same time.
July — Northern Serengeti and Approach to the Mara River
By July, many herds have moved toward the Northern Serengeti. Areas to consider include Kogatende, the Lamai area, the Mara River region, and the Northern Serengeti. The herds may gather near the river, but river crossings are unpredictable.
July can be an excellent month for travelers wanting to position themselves in the Northern Serengeti ahead of the main Mara River crossing period. Crossings should not be promised.
August — Mara River Crossings
August is one of the most popular months for the Mara River migration experience. The herds can be concentrated around the Northern Serengeti, Mara River, Kogatende, and Lamai area. Some herds may cross between Tanzania and Kenya.
However, the Mara River crossing is not a scheduled event. The herds may approach the river, wait, turn back, cross, cross multiple times, or remain on one side. River crossings are driven by animal behavior and environmental conditions. Even in August, a crossing cannot be guaranteed.
September — Northern Serengeti and Continued Mara River Activity
September remains a strong month for the Northern Serengeti migration experience. The herds may continue moving around the Mara River, Northern Serengeti, Lamai, and Kogatende. Crossings can continue through September and sometimes into October.
The Northern Serengeti can offer excellent wildlife viewing even when there is no active river crossing. The article should not be entirely about crossing photography; the broader migration experience matters too.
October — Late Mara River Activity and Beginning of the Return South
October is a transition month. Some herds may still be around the Mara River, while others begin moving southward. The return journey can take the herds through the Northern Serengeti, Central Serengeti, and Eastern Serengeti / Loliondo direction.
Mara River crossings may continue into October, but their timing is unpredictable. Travelers should build flexibility into their itinerary.
November — Southward Migration Through Eastern and Central Serengeti
The short rains generally help trigger southward movement. The herds begin returning toward the southern plains. Likely areas include the Eastern Serengeti, Central Serengeti, Loliondo direction, and areas southward toward the plains.
November is a transitional month. It is not "no migration." The migration continues year-round; only the location changes.
December — Return to Southern Serengeti
By December, the herds generally return toward the Southern Serengeti and Ndutu area. Fresh grazing becomes available following the short rains. The cycle begins moving toward the calving season again.
Recommended areas include the Southern Serengeti and Ndutu. December can provide an opportunity to see large herds, green landscapes, grazing activity, and early preparation for calving. Peak calving has usually not yet begun everywhere.
Why the Wildebeest Migration Does Not Follow an Exact Calendar
Rainfall is one of the major factors influencing migration movement. Other factors include availability of fresh grass, water, local weather, grazing conditions, and herd behavior. A migration calendar should therefore be treated as a planning framework, not a guarantee.
A herd expected in the Northern Serengeti in August may arrive earlier or later. A crossing expected during a particular week may not happen. The exact location can change even within the same month.
Where Is the Migration in Tanzania Each Season?
January–March
Southern Serengeti / Ndutu
Main focus: calving, newborn wildebeest, predator activity.
April–June
Central and Western Serengeti
Main focus: northward movement, large traveling herds, Grumeti region.
July–October
Northern Serengeti
Main focus: Mara River region, river crossings, northern migration.
November–December
Eastern/Central Serengeti → Southern Serengeti
Main focus: return south, fresh grazing, preparation for calving season.
These are broad seasonal patterns, not fixed boundaries.
What Is the Best Month to See the Great Wildebeest Migration?
There is no single best month. The right choice depends on what you want to see.
- Best for Calving: February–March, Southern Serengeti / Ndutu
- Best for Grumeti River Action: May–June, Western Serengeti / Grumeti region
- Best for Mara River Crossings: August–October, Northern Serengeti / Mara River
- Best for Seeing the Migration Without Focusing on River Crossings: Several months can work, depending on herd location and your priorities
No month guarantees a specific event. For a broader discussion of safari seasonality, see our guide on the best time to go on safari in Tanzania.
Can You See the Great Migration Outside the Peak Months?
Yes. The Great Migration is a year-round cycle. Travelers can encounter migrating herds in every month of the year. The difference is where the herds are and what behavior is most likely to be observed.
There is no "migration season" in which the migration suddenly starts and stops. The migration is continuous. For guidance on how long to stay in a migration area, read our article on how many days you need for a Tanzania safari.
How Should You Plan Your Tanzania Safari Around the Migration?
Practical planning should follow a simple sequence:
- Choose the migration event you most want to see.
- Choose the month that gives you the strongest probability.
- Choose the corresponding Serengeti region.
- Allow enough time in the area rather than relying on a single day.
- Keep expectations flexible because the herds move according to environmental conditions.
Travelers interested in river crossings should avoid building an itinerary around a single predicted crossing date. A private vehicle can provide greater flexibility in how the safari is experienced. For a detailed comparison of vehicle arrangements, see our guide on private vs shared Tanzania safari.
Great Migration by Month: Quick Decision Guide
| If You Want to See | Best Period | Main Area |
|---|---|---|
| Newborn wildebeest | February–March | Southern Serengeti / Ndutu |
| Predator action around calving | February–March | Southern Serengeti / Ndutu |
| Herds moving north | April–June | Central / Western Serengeti |
| Grumeti River activity | May–June | Western Corridor |
| Herds approaching the Mara | July | Northern Serengeti |
| Mara River crossings | August–October | Northern Serengeti |
| Return migration | October–November | Northern / Eastern / Central Serengeti |
| Herds returning south | November–December | Eastern/Central → Southern Serengeti |
Common Misunderstandings About the Great Migration
Myth: "The Great Migration happens only from July to October."
The migration is a continuous annual cycle. July–October is particularly famous because of the Northern Serengeti and Mara River crossings, but the cycle never stops.
Myth: "All the wildebeest move together."
The migration consists of huge herds and groups moving at different speeds and across different areas.
Myth: "The wildebeest cross the Mara River on a specific date every year."
Crossings are unpredictable and driven by behavior, water levels, and grazing conditions.
Myth: "If I visit in August, I will definitely see a crossing."
August provides a strong opportunity, but no crossing can be guaranteed.
Myth: "The migration is only in Kenya."
Most of the annual cycle takes place within the Serengeti ecosystem in Tanzania, with portions of the herds moving into the Maasai Mara in Kenya.
Myth: "If there is no river crossing, there is no migration."
The herds themselves, their movement, grazing, predator interactions, and seasonal landscapes are all part of the migration experience.
Frequently Asked Questions
In January, the herds are generally concentrated in the Southern Serengeti and Ndutu region, taking advantage of nutrient-rich grazing following the short rains.
February is generally the peak of the calving season, with large herds spread across the Southern Serengeti and Ndutu plains.
In March, the herds often remain in the Southern Serengeti and Ndutu area, though late-month movement toward the central and western Serengeti can begin.
April is a transition month, with herds moving north and west through the Central Serengeti toward the Western Corridor.
By May, significant portions of the migration are moving through the Western Corridor toward the Grumeti River region.
June is commonly associated with the Western Corridor and Grumeti River area, though the migration remains spread across different areas.
By July, many herds have moved toward the Northern Serengeti, including the Kogatende and Lamai areas near the Mara River.
August is generally associated with the Northern Serengeti and Mara River region, when river crossings are possible but not guaranteed.
In September, the herds are often still concentrated in the Northern Serengeti around the Mara River, with crossings continuing when conditions allow.
October is a transition month. Some herds remain near the Mara River, while others begin moving south through the Northern and Central Serengeti.
In November, the short rains often trigger southward movement through the Eastern and Central Serengeti toward the southern plains.
By December, the herds generally return toward the Southern Serengeti and Ndutu area as the cycle moves toward the next calving season.
The best month depends on what you want to see: February–March for calving, May–June for the Western Corridor, and August–October for Mara River crossings.
The calving season generally peaks in February, with calves born from late January through March in the Southern Serengeti and Ndutu region.
Mara River crossings are most likely between July and October, though the exact timing and frequency vary each year.
Yes. The migration is a continuous annual cycle within the Serengeti ecosystem. Where the herds are located changes, but the migration never stops.
The migration follows broad seasonal patterns but is not predictable on exact dates. Rainfall, fresh grazing, and herd behavior all influence movement.
Plan Your Tanzania Great Migration Safari
The best migration itinerary should be built around your travel month, preferred migration event, likely herd location, time available, accommodation preference, desired safari style, and flexibility.
The key message is simple: choose your travel dates first, then plan the safari around where the herds are most likely to be — not the other way around.
Request a Tailor-Made Great Migration Safari Quote
Our Arusha-based specialists can design a private migration safari positioned around your dates and the most likely herd locations.
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