Late July to September is the best time for a four country safari across Uganda, Rwanda, Kenya and Tanzania. See the month by month table, the second window and the 2026/27 rain caveat.
The best time for a four country safari across Uganda, Rwanda, Kenya and Tanzania is late July to September, when the forest trails are at their driest, river crossings are under way in the Mara and the Serengeti is at its strongest. January and February is the second window, and March to May is the hardest. This guide gives a month by month table, the trade-offs behind each window, and what to plan for the 2026/27 rains.
Written by Paramount Gorilla Expeditions Team East Africa. Facts last checked 11 October 2026.
The month ratings are our own planning view, not measured data.
In our planning view, late July to September is the best time for a four country safari because it is the only stretch where the three things that matter overlap. Rwanda's long dry season runs from June to mid-September, and Bwindi in Uganda is dry from about May or June to September, so forest trails are at their firmest. Herds usually reach the Mara from late July, and river crossings run from about July to October. One operator season guide rates the Serengeti as excellent from July to October.
August and September are the strongest months for all four countries at once, and September is slightly less crowded than August. Because Rwanda's dry season ends in mid-September, the tightest overlap is late July to early September. That is the answer most travellers need when they ask when to go on a four country safari: pick those weeks, then confirm the details with your planner.
The best months for a four country safari are also the most contested part of the year. Peak rates apply from July to October in Tanzania and from June to October in the Mara, and gorilla permits sell out earliest in August. Fix the permit date before anything else, then fit the plains around it. Peak dates sell out months ahead, so book as early as you can.
Some guides give June to October as the best months for a four country safari, as one block. We split it, because the edges are weaker. In June the gorilla trails are dry but the herds are not yet in the Mara, so the Kenya leg loses its headline attraction. In October the crossings are fading and the short rains are returning to Uganda and Rwanda. The weeks in the middle are better than the weeks at the ends. For the exact crossing weeks, read our Mara River crossing timing guide, and for forest conditions on their own see the best time to see gorillas in Uganda.
Uganda, Rwanda, Kenya and Tanzania do not share one rainfall calendar, and that is the whole difficulty of choosing the best time for a four country safari. The table shows the pattern we plan around.
| Place | Main dry months | Long rains | Short rains |
|---|---|---|---|
| Uganda (Bwindi) | About May or June to September, and December to February | March to April wettest | October to November |
| Rwanda | June to mid-September, and December to February | March to May, April wettest | October to November |
| Kenya (the Mara) | Roughly July to October, and January to February | March to May (one source says April to June) | November to early December |
| Tanzania (the Serengeti) | June to October | March to May | November to early December |
Rain onset varies by country and by year.
Read across the rows and the pattern is plain. All four places are driest around July to September. Outside that, the countries disagree, so the best time for Uganda Rwanda Kenya Tanzania as one trip is the narrow overlap, not the best months for any single leg. For each country alone, our guides to Kenya and Tanzania go deeper, and Safari Weather 101 explains rainfall and temperature.
Most seasonal pages treat East Africa as one climate. Some give December as both dry and wet in different paragraphs. December is a good example of the real answer: it is the short dry season for gorillas in Uganda and Rwanda, while Kenya and Tanzania are only just coming out of the short rains, which run to early December. Crossing dates are often given as if they were a schedule, when they cannot be, and lodge closures in April and May are rarely mentioned. A four country safari calendar has to be built country by country, then merged.
This four country safari calendar is laid out month by month, and it is our four country safari by month view of the route. Ratings run from 1 to 5, where 5 is best and "none" means no river crossings in the Mara that month. They are our planning view, built from the seasonal sources above, and they are a judgement call rather than measured data.
| Month | Gorillas (Uganda and Rwanda) | Mara river crossings | Serengeti | Overall | What to know |
|---|---|---|---|---|---|
| January | 4 | none | 5 | 4 | Dry in both gorilla countries; calving in the south. Holiday prices spill into early January. |
| February | 4 | none | 5 | 4 | Peak calving and predators. Rwanda's rain starts to creep back. |
| March | 2 | none | 3 | 2 | Long rains begin. Calving tails off. |
| April | 1 | none | 2 | 1 | Wettest month across the route. Some Tanzanian camps close. |
| May | 2 | none | 2 to 3 | 1 | Heavy rain in Rwanda and mud on trails. |
| June | 4 | none to 1 | 4 | 3 to 4 | Dry season starts. Herds not yet in the Mara; western Serengeti is the alternative. |
| July | 5 | 3 to 4 | 4 to 5 | 4 to 5 | Crossings begin in the north. Arrival in the Mara is usually late July. |
| August | 5 | 5 | 5 | 5 | Best overlap. Permits sell out earliest. |
| September | 5 | 5 | 5 | 5 | Excellent, slightly fewer crowds. Rwanda's dry season ends mid-month. |
| October | 3 | 4 | 4 to 5 | 3 to 4 | Crossings fading; short rains return to Uganda and Rwanda. |
| November | 2 | 1 | 3 | 2 | Last crossings in early November. Herds head south. |
| December | 4 | none | 4 | 3 to 4 | Short dry season for gorillas. Holiday pricing. Rain risk this year. |
Crossing and calving dates move by weeks from year to year.
Use the table to find the best months for a four country safari on your dates, then look at your dates and your fitness for the trek. If you are still weighing how long the whole route needs, our guide on how many days a four country trip takes covers it.
Neither the forest nor the herds alone decide the best time for a four country safari. Gorilla trekking runs all year, so the question is comfort and predictability. In the rainy seasons the trails are softer and more slippery, and families may range farther, which makes treks less predictable. There are also fewer visitors. A trek can last from under an hour to six or eight hours whatever the month, so mud adds to a day that is already variable.
The herds follow a different clock, and it is only roughly a calendar. These are typical phases, and rainfall can shift each one by weeks.
Laid over the forest seasons, the clash is clear. Gorillas and the migration meet cleanly in August and September. December to February pairs dry forest with calving, but no crossings. March to May is wet in the forest while the herds are only passing through, and in October and November the rain returns just as the herds leave. Which end of the trip the gorillas belong at is a separate question, covered in gorillas first or last.
Not everyone can go on a four country safari in the peak weeks, and the other windows are real options. The table sets each one against what you give up when you want gorillas and the migration on one trip.
| If your priority is | Go in | What you give up |
|---|---|---|
| Dry forest and river crossings together | Late July to September | Peak rates, the earliest permit sell-outs, more vehicles at crossings |
| Calving and dry gorilla trails | January to February | No Mara crossings; Rwanda's rain returning in February; a rain warning this year |
| Dry trails and quieter plains | June | Herds not yet in the Mara; permit pressure begins |
| Excellent Tanzania and fading crossings | October | Short rains arriving in Uganda and Rwanda |
June suits travellers who want dry forest trails and are happy to let the Mara be about lions, cheetah and open grassland rather than crossings. The dry season has started, and Grumeti and the western Serengeti offer action while the herds are still on their way north. Permit pressure builds from this month.
October still has fading crossings and a strong Serengeti, but the short rains return to Uganda and Rwanda, and the herds begin to leave the Mara over the month. Allow a spare night around each trek.
This is the second best time for a four country safari: gorillas in dry conditions, then calving in the south. There are no Mara crossings, though the Mara is quieter and still strong for lions and cheetah. In Rwanda the rain starts to creep back in February, and for 2026/27 the rain forecast below matters. If gorilla permits in Uganda are scarce for your dates, our 10 day Rwanda Kenya Tanzania safari keeps one Rwanda trek with the same plains.
The two rainy seasons are the long rains from March to May and the short rains in October and November. On a combined route, the long rains hit hardest, because four things go wrong together: gorilla trails turn muddy, calving is over, the herds are scattered through the central Serengeti, and some Tanzanian camps close in April. If you are choosing when to go on a four country safari, we do not recommend April or May. We could not confirm a list of closures for Kenya or Uganda, so ask us for the lodges on your route rather than assuming they are open.
Flights follow the seasons too. AirKenya's 2026 timetable has a Mara to Serengeti air and road link that runs daily to 31 December 2026 but not from 1 April to 20 May, with a minimum of two passengers, rising to four from 1 November to 15 December. Some operators still route Mara to Serengeti via Nairobi and Kilimanjaro or Arusha, which adds a day. Confirm the link for your dates, and see our flight logistics guide.
Operators report that Uganda offered a reduced gorilla permit rate of USD 600 for April, May and November 2026, not reschedulable. UWA's published 2024 to 2026 tariff shows USD 800 for foreign non-resident visitors, and we found no confirmed low-season months for 2027, so confirm the rate for your date. Rwanda's permit is USD 1,500 on the RDB portal, with no refund for your own cancellation. These are facts about permits, not a reason to choose a wet month for a route that crosses four countries.
Our advice is plain: we do not recommend a four country route in April or May. A rainy-season trip can work for a shorter, single-country plan, as in our guide to green-season safaris, but four countries with four sets of mud and flights is the wrong shape for it.
If you are planning a trip between now and early 2027, the El Niño rains 2026/27 are the one weather factor that can move the best months for a four country safari this season. The Kenya Meteorological Department's June 2026 outlook said El Niño, possibly with a positive Indian Ocean Dipole, could bring wetter-than-normal short rains from October to December. A warning reported on 10 September 2026 urged preparation for heavy rain from October to December, possibly continuing into February 2027. We have read the warning at headline level only, so treat the detail as reported.
The warning is for Kenya. Uganda, Rwanda and northern Tanzania share the same short-rains season, so our reading is to treat it as a regional caution. Practically, it raises the risk of mud and road closures for any departure from November 2026 to February 2027.
The warning covers October 2026 to February 2027 only and says nothing about the dry months that follow. Forecasts change, so we recheck them with you before any departure in the El Niño rains 2026/27 period.
The best months for a four country safari are also the first to sell out, so the order in which you book matters as much as the dates.
When to go on a four country safari depends on what you can give up. Late July to September suits first-time visitors who want gorillas, crossings and the Serengeti in one trip, and who book early. January and February suit travellers who care most about calving and predators, and who accept no crossings. June and October suit flexible travellers who would rather give up one highlight than pay peak rates. If cost is your main question, read what an East Africa safari costs.
When you pack, remember that cool forest mornings and warm plains days sit in one suitcase. Our packing list covers it.
Choosing the best time for a four country safari is mostly a matter of order: decide your window, fix the gorilla permit, then build the plains legs and flights around it. Tell us which months you can travel and how flexible they are, and we will say which of the best months for a four country safari fit your dates, what each month gives up and what the 2026/27 rains mean for your dates.
To help us answer quickly, send us:
Two of our routes are built for this question. Our two routes across all four countries are the 14 day four country safari and the 18 day four country safari, and we fit either one to the window you choose. For route order and entry rules by country, read the Uganda Rwanda Kenya Tanzania safari route guide, our complete route guide for three countries, and the multi country hub.
The month you travel changes the fixed fees as well as the weather: the Mara reserve fee doubles from July, and Tanzanian park fees step up in the high season. Our four country safari cost guide shows the fees by park.
Tell us your dates and how flexible they are. We will confirm the window, the permits and the flight sequence in writing.
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