The Grumeti River flows in a westerly movement across the top half of the Serengeti before emptying into Lake Victoria. While the “Lower Grumeti” defines the Western Corridor, the Upper Grumeti refers to the pristine section cutting through the Northern …
The Grumeti River flows in a westerly movement across the top half of the Serengeti before emptying into Lake Victoria. While the “Lower Grumeti” defines the Western Corridor, the Upper Grumeti refers to the pristine section cutting through the Northern Serengeti. This 800-square-mile region is a tale of two distinct habitats: a dense, emerald gallery forest that shades the riverbanks and sprawling acacia woodlands that blanket the surrounding valleys and hills.
The Great Migration
The migration thunders through the Upper Grumeti twice a year: heading north in July/August and returning south from September to November. The southward journey is especially pronounced, as the herds tend to linger in the lush woodlands for longer periods. Throughout the dry season, a constant stream of wildebeest and zebra can be seen flooding through the acacias in their relentless search for water.
Ecosystem: The Gallery Forest and the Whistling Thorn
The riverine environment is a lush haven of fig, mahogany, date palm, and tamarind trees. Though the river is seasonal, deep permanent pools support resident hippos and crocodiles year-round.
In the surrounding woodlands, nature has evolved fascinating defense mechanisms:
Wildlife Viewing: The Grumeti Game Loop
The Grumeti Game Loop is widely considered one of the best drives in the Northern Serengeti. This 2-hour “U-shaped” track parallels the river, offering consistent encounters with:
Month | Season | Weather | Wildlife Sightings | Rec. |
|---|---|---|---|---|
JAN | Green Season | 60 – 85 F
Mostly sunny with few showers | —- | No |
FEB | Green Season | 60 – 85 F
Mostly sunny with few showers | —- | No |
MAR | Green Season | 60 – 83 F
Mostly sunny with few showers | —- | No |
APR | Green Season | 60 – 83 F
Mostly sunny with few showers | —- | No |
MAY | Northward Migration | 56 – 81 F
Mostly sunny | —- | No |
JUN | Beginning of Dry Season | 56 – 81 F
Mostly sunny | Wildebeest Migration, Zebra Migration, Lion, Elephant, Giraffe, Impala, Buffalo, Hippo | Yes |
JUL | Dry Season | 60 – 83 F
Mostly sunny | Wildebeest Migration, Zebra Migration, Lion, Elephant, Giraffe, Impala, Buffalo, Hippo | Yes |
AUG | Dry Season | 55 – 81 F
Mostly sunny | Wildebeest Migration, Zebra Migration, Lion, Elephant, Giraffe, Impala, Buffalo, Hippo | No |
SEP | Dry Season | 55 – 81 F
Mostly sunny | Wildebeest Migration, Zebra Migration, Lion, Elephant, Giraffe, Impala, Buffalo, Hippo | No |
OCT | Dry Season | 60 – 83 F
Mostly sunny | Wildebeest Migration, Zebra Migration, Lion, Elephant, Giraffe, Impala, Buffalo, Hippo | Yes |
NOV | Southward Migration | 60 – 83 F
Mostly sunny with few showers | Giraffe, gazelle, Walking Safaris and Cultural Interactions | Yes |
DEC | Beginning of Green Season | 60 – 83 F
Mostly sunny with few showers | —- | No |
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