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Moshi Kilimanjaro Tanzania
The short answer: The Great Wildebeest Migration is a year-round event in Tanzania. There is no “start” or “end” — it’s a continuous 1,200 km (750 mile) circular journey. The most famous event, the river crossings of the Mara River, happen from July to October (peak in August-September). The calving season (baby wildebeest) happens from January to February in the southern Serengeti. This guide breaks down exactly where the migration is each month so you can plan your safari at the perfect time.
January-February: Southern Serengeti (Ndutu area) — calving season (500,000+ calves born) | March-May: Western Serengeti (Grumenti River) — mating season | June-July: Western Serengeti (Grumenti River crossings begin) | July-October: Northern Serengeti (Mara River) — DRAMATIC RIVER CROSSINGS (peak August-September) | November-December: Eastern Serengeti (moving south) — start of return journey.
🎯 Our verdict for most travelers: For the iconic river crossings with crocodiles, visit August-September. For baby animals and predator action, visit January-February. For fewer crowds and good general migration viewing, visit June or October.
The Great Wildebeest Migration is the largest overland animal migration on Earth. Over 1.5 million wildebeest, plus 200,000 zebras and 300,000 gazelles, move in a continuous circle through the Serengeti ecosystem (Tanzania) and Masai Mara (Kenya).
Wildebeest follow the rain and fresh grass. They move to where recent rains have produced nutrient-rich grazing. The migration is a constant search for food and water.
The full circuit is approximately 1,200 km (750 miles). It takes the herds a full year to complete the loop from southern Serengeti → western Serengeti → northern Serengeti → back south.
250,000+ wildebeest die annually — from predation (lions, crocodiles), drowning during river crossings, disease, and exhaustion. This is nature’s cycle.
| Month | Location (Serengeti Zone) | Key Event | Rating | Crowds |
|---|---|---|---|---|
| January | Southern Serengeti (Ndutu area) | Calving season begins — thousands of babies | ⭐⭐⭐⭐⭐ | Medium |
| February | Southern Serengeti (Ndutu area) | Peak calving — 8,000 calves born DAILY | ⭐⭐⭐⭐⭐ | Medium-High |
| March | Southern → Western Serengeti | Herds begin moving west, mating season | ⭐⭐⭐⭐ | Low-Medium |
| April | Western Serengeti (Grumenti River) | Mating season continues, start of river crossings | ⭐⭐⭐ | Low (rainy season) |
| May | Western Serengeti (Grumenti River) | First major river crossings begin | ⭐⭐⭐⭐ | Low-Medium |
| June | Western → Northern Serengeti | Herds prepare for Mara River crossing | ⭐⭐⭐⭐ | Medium |
| July | Northern Serengeti (Mara River) | Mara River crossings BEGIN — crocodile action | ⭐⭐⭐⭐⭐ | High |
| August | Northern Serengeti (Mara River) | PEAK river crossings — most dramatic | ⭐⭐⭐⭐⭐ | Very High |
| September | Northern Serengeti (Mara River) | Peak crossings continue, herds spread out | ⭐⭐⭐⭐⭐ | Very High |
| October | Northern → Eastern Serengeti | Crossings continue early Oct, then move south | ⭐⭐⭐⭐½ | High |
| November | Eastern Serengeti (moving south) | Herds travel south toward calving grounds | ⭐⭐⭐½ | Low-Medium |
| December | Eastern → Southern Serengeti | Arriving at calving grounds, short grass grazing | ⭐⭐⭐⭐ | Medium (holiday week busy) |
The Mara River crossings are what most people imagine when they think of the Great Migration. Thousands of wildebeest gather on the riverbanks, then plunge into crocodile-infested waters. It’s chaos, drama, and raw nature.
Calving season is nature’s baby boom. Over 500,000 wildebeest calves are born in a 3-4 week period, mostly in February. Up to 8,000 calves are born per day. Predators (lions, cheetahs, hyenas) go into a feeding frenzy.
August-September — Peak Mara River crossings. Most dramatic, but also most crowded. Book 6-12 months ahead.
January-February — 500,000+ calves born. Lions, cheetahs, and hyenas hunt constantly. Best for photography.
June or October — Shoulder months. Good migration viewing with significantly fewer tourists than peak.
January-February (dramatic green season skies) or August-September (golden dry season light). Both excellent.
April-May or November — Low season prices (20-30% cheaper). Migration is harder to find, but possible with good guides.
February (calving + predator action) or September (river crossings + good weather). Both are incredible.
| Migration Phase | Best Area | Recommended Camps (Budget → Luxury) | Booking Timeline |
|---|---|---|---|
| Calving (Jan-Feb) | Ndutu / Southern Serengeti | Heritage Ndutu (budget) → Ndutu Safari Lodge (mid) → &Beyond Klein’s Camp (luxury) | 3-6 months ahead |
| Grumenti (Apr-Jun) | Western Serengeti (Grumenti River) | Grumenti River Camp (mid) → Mbalageti Lodge (mid-luxury) | 2-4 months ahead |
| Mara Crossings (Jul-Oct) | Northern Serengeti (Kogatende / Lamai) | Serengeti Heritage (mid) → Sayari Camp (luxury) → &Beyond Grumenti (premium) | 6-12 months ahead (peak) |
| Return South (Nov-Dec) | Eastern Serengeti | Namiri Plains (luxury) → Serengeti Sopa (mid) | 2-4 months ahead |
Best months: December-March
Key event: Calving season (Jan-Feb). Short grass plains, thousands of babies, intense predator action.
Best months: Year-round (but migration passes through April-May & October-November)
Key event: Best area for leopards and resident game when migration is elsewhere.
Best months: April-July
Key event: Grumenti River crossings (less dramatic than Mara, but fewer crowds).
Best months: July-October
Key event: MARA RIVER CROSSINGS — the most dramatic migration event. Crocodiles, chaos, and thousands of wildebeest.
| Factor | Tanzania (Serengeti) | Kenya (Masai Mara) |
|---|---|---|
| Migration viewing | Year-round (herds always in Serengeti) | Only July-October (herds cross from Tanzania) |
| River crossings | Mara River (same river as Masai Mara) — less crowded | Mara River — more crowded but more crossing points |
| Crowds | Very crowded (smaller park, 1,500 sq km) | |
| Cost | Higher (park fees, accommodation more expensive) | |
| Best time | Year-round for some part of migration | July-October only |
We specialize in Great Migration safaris with experienced guides who track the herds in real-time. Our guides have 10+ years of experience predicting crossing locations.
| Package | Season | Duration | Focus | Price (pp) |
|---|---|---|---|---|
| Calving Season Safari | January-February | 5 days | Baby wildebeest + predator action | $2,450-$3,500 |
| River Crossings Safari | August-September | 6 days | Mara River crossings + crocodiles | $3,200-$4,800 |
| Ultimate Migration Safari | July-October | 8 days | Crossings + Ngorongoro + Tarangire | $4,200-$6,500 |
| Budget Migration Camping | February or June/October | 5 days | Migration viewing + camping experience | $1,650-$2,200 |
📩 Want to see the Great Migration? Tell us when you want to travel — we’ll recommend the best location and camp for your dates.
The Great Migration is a year-round event. January-February: calving in southern Serengeti. July-October: Mara River crossings in northern Serengeti (peak August-September). April-June: Grumenti River crossings in western Serengeti. November-December: herds move south.
For river crossings (crocodiles): August-September. For calving (baby animals + predator action): February. For fewer crowds: June or October. For best overall experience: February or September.
No — the wildebeest decide when to cross. Some years crossings start in July, other years not until September. August is the most reliable month, but you still need 3-4 days for a good chance. A good guide is essential.
Yes — the migration is always somewhere in the Serengeti ecosystem. However, it’s not always in Tanzania — from August-October, the herds cross into Kenya’s Masai Mara. But large portions remain in Tanzania’s northern Serengeti.
Yes — it’s one of the most spectacular wildlife events on Earth. Seeing 10,000+ wildebeest plunge into a crocodile-infested river is unforgettable. Even without crossings, seeing 1.5 million animals spread across the plains is breathtaking.
Minimum 4-5 days. For river crossings, spend at least 3-4 nights in northern Serengeti. For calving, 3-4 nights in southern Serengeti. A 5-6 day safari focused on the migration zone is ideal.
The Great Migration is waiting. Tell us when you want to travel, and we’ll design the perfect itinerary to put you in the right place at the right time.
🇹🇿 Based in Moshi, Tanzania — we track the herds year-round and know exactly where to go
