When to go, in short
The answer depends on what you want most.
Easiest game viewing?
June to October, the dry season.
Calving season?
Late January and February, at Ndutu.
River crossings?
August and September in the north.
Cheapest months?
April and May — the long rains.
Quietest?
April, May and November.
Is it cold?
At dawn, yes — 5 °C on the Ngorongoro rim.
The short answer
June to October is the dry season and the easiest time to see wildlife almost everywhere in Tanzania. Late January and February bring the calving season in the southern Serengeti, which many guides consider the better spectacle. March to May is the long rains: green, quiet and considerably cheaper.
There is no closed season. What changes is what you see, how many other vehicles you share it with, and what you pay.
| Season | Months | Game viewing | Crowds | Price |
|---|---|---|---|---|
| Dry season | Jun–Oct | Excellent | High | Peak |
| Short dry spell | Jan–Feb | Excellent | Moderate | High |
| Short rains | Nov–Dec | Good | Low | Mid |
| Long rains | Mar–May | Variable | Very low | Lowest |
Tanzania has two rainy seasons, not one
Confusing these is the most common planning mistake, and they are genuinely different.
The long rains — March to May
Real rain, often for several hours a day, heaviest in April. Some tracks become impassable, black-cotton soil in the Western Corridor turns to glue, and a number of seasonal camps close entirely — particularly in Ruaha and Nyerere. It is also the cheapest time of year by a wide margin, the landscape is spectacular, and you can have parks almost to yourself.
The short rains — November to December
Brief, heavy showers in the late afternoon, with the rest of the day usually sunny. Nothing closes, nothing floods, the country turns green and prices are still moderate. For many travellers this is the best compromise of the year, and it is badly underrated.
Month by month
| Month | Weather | Highlights | Verdict |
|---|---|---|---|
| January | Dry, warm | Calving begins in Ndutu; excellent everywhere | Very good |
| February | Dry, warm | Peak calving; the best predator month of the year | Excellent |
| March | Rains begin | Herds still south; prices dropping; green | Good value |
| April | Long rains | Wettest month; parks nearly empty; lowest prices | For the adventurous |
| May | Rains easing | Herds in the Western Corridor; still very quiet | Good value |
| June | Dry, cool | Dry season begins; Grumeti crossings; fewer people than July | Excellent |
| July | Dry, cool | First Mara crossings; Tarangire at its best | Excellent, busy |
| August | Dry | Peak Mara crossings; peak crowds and prices | Excellent, busiest |
| September | Dry | Crossings continue; superb everywhere | Excellent |
| October | Dry, hot | Last crossings; excellent game concentration | Excellent |
| November | Short rains | Green, quiet, good value; herds moving south | Underrated |
| December | Short rains | Herds reach the southern plains; busy from mid-month | Good |
Best time by what you want
| If you want… | Go in… | Why |
|---|---|---|
| Easiest game viewing | Jun–Oct | Sparse vegetation, animals concentrated at water |
| Mara River crossings | Aug–Sep | Peak frequency in the northern Serengeti |
| Calving and predators | Late Jan–Feb | 400,000 births; constant hunting |
| Lowest prices | Apr–May | Long rains; camps discount heavily |
| Fewest vehicles | Apr–May, Nov | Parks almost empty |
| Birdwatching | Nov–Apr | Migrants present, residents in breeding plumage |
| Photography | Nov–Dec, Feb | Green landscapes, dramatic skies, clean air |
| Kilimanjaro | Jan–Feb, Jun–Oct | Driest and most stable on the mountain |
| Zanzibar | Jun–Oct, Dec–Feb | Dry, calm sea, good visibility for diving |
| Southern circuit | Jun–Oct | Ruaha and Nyerere largely close Mar–May |
What the weather is actually like
Tanzania sits on the equator, but altitude matters far more than latitude. The northern parks are between 1,000 m and 2,400 m, which is why mornings are genuinely cold.
| Place | Altitude | Daytime | Dawn |
|---|---|---|---|
| Ngorongoro rim | 2,300 m | 16–20 °C | 5–10 °C |
| Serengeti | 1,500 m | 24–28 °C | 13–15 °C |
| Arusha | 1,400 m | 22–26 °C | 13–16 °C |
| Tarangire | 1,100 m | 28–32 °C | 15–17 °C |
| Zanzibar | Sea level | 28–32 °C | 23–25 °C |
| Kilimanjaro summit | 5,895 m | −7 to −20 °C | Colder |
The figure that surprises people is the Ngorongoro rim at dawn: around 5 °C, in an open vehicle, moving. Every visitor who packed only for "Africa" regrets it. Layers are not optional.
When to visit Tanzania — frequently asked questions
June to October for the easiest game viewing everywhere, and late January to February for the calving season in the Serengeti. March to May is the long rains — green, quiet and by far the cheapest.
April is the wettest month and the one most people avoid. Tracks become difficult, some southern camps close entirely, and views are often obscured. It is also the cheapest month and the parks are nearly empty, so it suits some travellers very well.
Yes. The northern parks operate year-round and rain usually comes in heavy bursts rather than all day. Ruaha and Nyerere in the south are different — most camps there close between March and May.
July to October in the northern Serengeti, with August and September the peak months for frequency. Being there in the right month gives you a good chance over several days, never a guarantee on a given morning.
Late January and February, on the short-grass plains around Ndutu. Around 400,000 calves are born in a three-week window, and predator activity is at its highest of the year.
At altitude, yes, and this surprises most visitors. The Ngorongoro rim drops to around 5 °C before dawn, and the Serengeti to 13–15 °C. Daytime is warm, so layers rather than one heavy coat is the answer.
April and May, during the long rains, when camps discount heavily and parks are almost empty. November is the next cheapest and considerably drier — short afternoon showers rather than all-day rain.
January to early March and June to October. January and February have the warmest summit nights; June to October is driest and busiest. April and May are the long rains and best avoided on the mountain.
June to October is dry and less humid; December to February is hot with calm seas and excellent diving visibility. March to May is the long rains, when some hotels close.
It is the peak month. Camps in the northern Serengeti sell out six to twelve months ahead, prices are at their highest, and you will share sightings. The wildlife is superb — you are simply not alone with it.
It is one of the most underrated. The short rains bring brief afternoon showers, the landscape turns green, migrants arrive for birders, prices are moderate and the parks are quiet. Nothing closes.
No. The herds are in the ecosystem every month of the year — the rains are precisely what drives them. In April and May they are moving through the central and western Serengeti.
Busy and expensive. Many camps charge a peak-season supplement from around 20 December to 3 January and require minimum stays. Game viewing is good, but you pay for the dates.
The seasons align well: June to October and December to February are good for both. In March to May you would be combining a wet safari with a wet coast, which is why that period is the cheapest.