Tanzania weather in May falls within the long rains, bringing warm days, high humidity and frequent afternoon downpours across most of the country, easing toward the end of the month. Daytime highs on the northern safari circuit sit in the high twenties Celsius, cooling sharply in the Ngorongoro Highlands, while the coast and Zanzibar stay hot and wet. May is the greenest and one of the quietest months on safari, as the wet season winds down.
Tanzania Weather in May Across the Country
May sits at the tail of the long rains, which run roughly from March to May. Rain is common but rarely all day. The usual pattern is bright mornings, building cloud, then a heavy shower in the afternoon or overnight that clears again. By the last week of May the rains often start to break, and the shift toward the dry season becomes noticeable.
Temperatures stay warm across the lowlands. On the northern circuit, including Tarangire and the Serengeti, days reach the mid to high twenties Celsius with mild nights. Altitude changes this quickly. The Ngorongoro crater rim and the highlands run much cooler, and mornings there can feel cold enough for a fleece and a hat.
Northern Safari Circuit Weather in May
The northern circuit is the heart of Tanzania safari travel, and May leaves it green and thick with growth. Grass grows tall, water is plentiful and the bush is thick, which spreads wildlife out and can make animals harder to spot than in the dry months. Roads in the Serengeti and other parks turn muddy in places, and a few remote tracks may be tough going after heavy rain.
In Tarangire National Park, May keeps the wider bush watered, so the huge dry-season elephant gatherings along the Tarangire River have not yet formed. What May offers instead is scenery, birdlife and space, since far fewer vehicles work the parks at this time. Lake Manyara and the Ngorongoro Highlands see the same green flush, with the crater floor still busy with resident wildlife whatever the season.
What May Weather Means for a Safari
May is a trade-off month for a safari, and it helps to know both sides. The rain and thick cover make general game viewing harder than in the dry season, and predator sightings are never guaranteed at any time of year. Against that, the parks are quiet, the light is clean after a shower, and the green backdrop is at its best for photography.
Birding is a strong reason to travel in May. Migratory species are still present in numbers, and many resident birds are in breeding plumage. Tarangire alone records more than 550 species, and the swamps and floodplains stay active through the wet months. For travellers on a budget, May also brings some of the lowest lodge rates of the year, since it falls in the low season.
May Weather in Zanzibar and the Coast
The coast and Zanzibar see their wettest weather in May. This is the peak of the long rains on the islands, with high humidity, warm seas and regular heavy showers. Some smaller beach camps close for part of the month, and a few dive operators scale back, so a beach add-on in May needs checking before it is booked.
That said, the rain still comes mostly in bursts rather than solid days, and the sea stays warm. Travellers who do not mind a wet afternoon can find Stone Town and the beaches almost empty and priced low. For reliable beach weather, though, June onward is the safer choice.
May Temperatures and Rainfall by Region
Conditions vary a lot by altitude and location. The table below gives a broad guide to Tanzania weather in May across the main travel regions.
| Region | Typical day temperature | May conditions |
|---|---|---|
| Northern circuit (Tarangire, Serengeti) | Mid to high 20s C | Green, warm, afternoon showers, few vehicles |
| Ngorongoro Highlands | High teens to low 20s C | Cool, misty mornings, cold nights on the rim |
| Arusha and Moshi | Low to mid 20s C | Warm days, frequent rain, green surrounds |
| Zanzibar and the coast | Around 30 C | Hot, very humid, wettest month, warm sea |
| Southern parks (Nyerere, Ruaha) | Mid to high 20s C | Rains easing, some camps still closed |
Higher ground is always cooler than these figures suggest, and the crater rim can drop close to freezing at night. Rainfall totals fall sharply from the north down to the drier central and southern areas, but May is wet enough almost everywhere that waterproofs earn their place in the bag.
How May Compares to April and June
May sits between the wettest and the driest of the neighbouring months, and knowing where it falls helps set expectations. April is usually the peak of the long rains, the wettest month on much of the northern circuit and the coast, with more washed-out roads and more camp closures. May carries similar rain early on but tends to ease as the weeks pass, so a late-May trip often catches drier, brighter days than a mid-April one.
June marks the turn into the dry season. Rain drops off sharply, the bush begins to thin, and the animals start to move back toward permanent water such as the Tarangire River. Prices climb as demand returns. For a traveller weighing the calendar, May offers the green scenery and low rates of the wet season with a better chance of clear spells than April, while June trades those savings for more reliable game viewing. Late May can be a sensible middle ground for anyone who wants value without the heaviest rain.
Packing and Planning for May
Pack for warm days, cool highland mornings and rain that can arrive at any point. Light layers work best, with a waterproof jacket, a warm fleece for the Ngorongoro area, and quick-drying clothing that copes with damp. Closed shoes and insect repellent matter more in the wet season, since standing water lifts mosquito numbers.
On the practical side, park fees are paid by card or mobile money rather than cash. A valid visa is needed for most nationalities, and a yellow fever certificate may apply depending on your route. Malaria prevention is widely advised for safari areas, and that advice carries extra weight in the wetter months when standing water lifts mosquito numbers. A dry bag or two for cameras and phones is worth packing, since showers can arrive with little warning on a game drive. Booking is easier in May than in peak season, though it still pays to confirm which camps stay open.
Frequently Asked Questions
Is May a good time to visit Tanzania? May can be a good value choice for green scenery, birding and quiet parks, but it is one of the wettest months. Game viewing is harder than in the dry season, and some coastal camps close, so it suits flexible travellers more than first-timers set on classic dry-season conditions.
How much rain falls in Tanzania in May? May is part of the long rains, so most regions see frequent heavy showers, usually in the afternoon or overnight rather than all day. The north and the coast are wettest, while central and southern areas are drier. Rain generally eases toward the end of the month.
Can you go on safari in Tanzania in May? Yes. The main parks stay open and safaris run through May. Expect green, thick bush, some muddy roads and lower prices, with wildlife more spread out than in the dry season and sightings never guaranteed on any single drive.
What should I pack for Tanzania in May? Bring light layers for warm days, a warm fleece for the cool Ngorongoro Highlands, a waterproof jacket, quick-drying clothes and insect repellent. Closed shoes help in wet, muddy conditions.
Is Zanzibar worth visiting in May? May is the wettest month on Zanzibar, with high humidity and regular showers, and some beach camps close. It can be cheap and quiet for travellers who do not mind rain, but June onward gives more reliable beach weather.