Jan
Calving begins
Southern Serengeti (Ndutu)
Best base: Ndutu plains
Last births cluster now. Predator density peaks. Easy game viewing. Warm days, cool nights.
Feb
Peak calving
Southern Serengeti (Ndutu)
Best base: Ndutu plains
500,000 calves born in ~3 weeks. Lions, cheetahs, hyenas saturated with prey. Photography at its best.
Mar
Herds begin moving north
Southern → Central Serengeti
Best base: Central Serengeti
Calves strong enough to march. Herds start spreading north. Rains beginning to green plains.
Apr
Long rains, herds diffuse
Central Serengeti
Best base: Seronera
Many operators advise against green season. We say: go. Crowds halve, animals plentiful, prices drop.
May
Herds concentrate for Grumeti
Western Corridor
Best base: Grumeti Reserves
Mating season. Large bachelor herds. Herds build up along the Grumeti River ahead of the first crossing.
Jun
Grumeti river crossings
Western Corridor
Best base: Grumeti Reserves
First major crossings. Crocodiles active. Less famous than Mara crossings but extraordinary and less crowded.
Jul
Mara crossings begin
Northern Serengeti
Best base: Kogatende / Mara River
The iconic event. First crossings — some reverse, some push north. Peak travel season begins.
Aug
Peak crossings
Northern Serengeti / Mara
Best base: Kogatende
Most dramatic period. Book Kogatende camps 10+ months ahead. Single mass crossings of 10,000+.
Sep
Continued crossings
Northern Serengeti / Mara
Best base: Kogatende
Crossings continue both directions as herds chase rain. Slightly less frantic than August.
Oct
Return crossings
Northern Serengeti / Mara
Best base: Kogatende
Short rains stirring. Herds begin pushing south. Return crossings — less famous, equally dramatic.
Nov
Short rains, southward push
Eastern → Central Serengeti
Best base: Ngorongoro rim camps, Central
Herds spread across the eastern plains heading back south. Excellent birding. Quieter than peak.
Dec
Herds arrive south, calving begins
Central → Southern Serengeti
Best base: Ndutu plains
Vanguard births begin. Herds settling into southern calving grounds. Holiday season crowds — book early.