best time to visit tanzania

January belongs to the southern Serengeti, where the wildebeest begin to calve on the short-grass plains around Ndutu. Hundreds of thousands of births within a few weeks draw lions, cheetah and hyena, and the predator activity is among the most concentrated anywhere in Tanzania.

This is a regional high rather than a country-wide one. The northern Serengeti is quiet, and in the south Ruaha and Nyerere are green and dispersed, better for birds than big game. Zanzibar is reliably dry and clear. Come in January for the calving and the southern circuit, not for the classic dry-country parks.

February is the height of the calving season on the southern Serengeti plains. The greatest density of newborns brings the most sustained predator viewing of the year, with kills a daily possibility for guides who know where the herds have settled.

As in January, the rest of the country lags. Tarangire, Ruaha and Nyerere are lush and the game is spread out, and the long rains are not far off. Ngorongoro Crater holds resident wildlife and Zanzibar stays warm and clear. A prime month if your trip is built around Ndutu, a shoulder month otherwise.

March marks the start of the long rains, and reliable safari conditions fade through the month. The migration herds begin drifting north from the calving grounds, but tracking them becomes harder as the grass grows and roads soften.

The southern parks turn wet and several camps prepare to close. Birding is good and the landscapes are green, but for the country's flagship dry-country game viewing this is the start of the difficult stretch. Rain reaches Zanzibar too. Better months sit on either side.

April is the wettest month and the weakest for a Tanzania safari. The long rains are at their heaviest, roads in the remote parks become difficult, and many camps in Ruaha and Nyerere close for the season.

Game is widely dispersed across green country with standing water everywhere, so concentrations are thin and sightings unpredictable. The northern circuit stays open and very quiet, and the scenery is at its greenest, but this is a month most travellers are better avoiding. Zanzibar sees its heaviest downpours.

May remains within the long rains, with many southern camps still closed and conditions wet. The migration is moving north and west through the central Serengeti, but heavy grass and damp ground keep viewing inconsistent.

Late in the month the rains can begin to ease and the first dry-season travellers arrive, yet for most of May the country is green and the game is spread thin. It is the quietest time of year and the landscapes are at their lushest, which suits birders and photographers more than first-time safari-goers.

June opens the dry season and the strongest stretch of Tanzania's safari year. The land begins to dry, the grass thins, and wildlife starts to gather around the rivers and waterholes that will hold them through to October.

Tarangire's elephant herds concentrate along its river, Ruaha and Nyerere reopen and improve quickly, and in the north the migration builds toward the Grumeti and Mara. Nights are cool and the skies are clear. A genuinely prime month, and usually less crowded than the peak that follows.

July is peak season, and the month the Mara River crossings begin in the northern Serengeti. Wildebeest and zebra mass on the banks before plunging through crocodile-held water, the most dramatic event of the migration calendar.

Across the rest of the country the dry-season viewing is at full strength, with strong concentrations in Tarangire, Ruaha and Nyerere and easy spotting against thinning bush. This is the busiest and most expensive time in the northern parks, so the trade-off is vehicles at the best sightings. Zanzibar is dry and sunny.

August holds the most reliable Mara River crossings and excellent viewing across every region. The northern Serengeti is the focus, but the southern and central parks are equally rewarding as water sources shrink and animals concentrate.

Conditions are dry, cool and predictable, which makes this the single most dependable safari month. It is also the most heavily booked, so the better camps fill far ahead. Days are comfortable and nights cold in the highlands around Ngorongoro. Zanzibar stays clear and breezy.

September is one of the best all-round months, with the crossings continuing and the parks still dry. Wildlife remains concentrated, the bush is open, and the crowds ease a little from the August peak.

The northern Serengeti holds migration action while Tarangire, Ruaha and Nyerere deliver classic dry-season viewing along their rivers. The weather is settled and warm by day. For travellers who want peak conditions with marginally fewer vehicles, this is often the sharpest choice of the year.

October closes the dry season and remains prime, particularly in its first half. Water is scarce and wildlife stays concentrated, with the migration beginning to turn south from the Mara as the first rains approach.

This is the hottest stretch of the dry season, and the southern parks in particular can be demanding in the midday heat. Game viewing across the country is still strong and the bush is at its most open. Travellers sensitive to heat are better suited to the cooler months of July through September.

November brings the short rains, usually brief afternoon showers that green the country without closing it. The migration herds move south through the eastern and central Serengeti toward the calving grounds, and the landscapes recover their colour.

Wildlife begins to disperse as water becomes available, so concentrations soften from the dry-season peak, but viewing stays good and the crowds thin. Birding improves as migrants arrive. A genuine shoulder month, rewarding for those who accept some rain in exchange for fewer vehicles.

December sees the short rains ease and the migration arrive back on the southern Serengeti plains. Early in the month is green and uncrowded, with good wildlife and strong birding across the northern circuit and Ngorongoro.

The southern parks are lush and the game more dispersed than in the dry months. Late December grows busier with the holiday period and the northern camps fill. It is a shoulder season with a clear upside: green country, returning herds, and the calving season just ahead. Zanzibar is largely dry and warm.