Month by month
Advice written for the parks of southern Africa, where the year has one dry season and one wet one, does not fit here. Samburu dries out twice. The long window runs from June to September, and a short hot one sits in January and February, with the long rains in March and April and the short rains in November and December. September is both the driest month on the card, at 1 mm, and the hottest, at 32.4°C, and that tension is the whole decision.
If you only want the answer
June to September, and the two halves of it are not the same trip. The bush thins out and the game walks to water, but September averages 32.4 degrees in the afternoon. Early in the window you are more comfortable, late in it you see more.
The periods below are how this park actually divides its year, with thirty-year climate averages against each month. Averages hide bad years: a dry January still happens, and so does a wet July.
Shoulder
26 and 29 mm
Green season
68 mm
Green season
70 mm
Shoulder
30 mm
Prime
5, 3 and 2 mm
Dry but hot
1 mm
Shoulder
44 mm
Green season
91 and 60 mm
Climate figures are Open-Meteo climate normals, 1991 to 2020, measured at 0.62, 37.68. Prime, shoulder and green are worked out against this park's own year, not a fixed threshold: the four months with the least rain, the four with the most, and the rest in between. Full charts on the weather page.
The reserves sit almost on the equator, at 0.62 degrees north, and the sun crosses overhead twice a year. That is why the rain comes twice as well. The long rains fall in March and April, 68 and 70 mm, and the short rains in November and December, 91 and 60 mm. November is the wettest month of the year here, which already breaks the pattern most safari calendars assume.
Between those two wet seasons sit the two dry ones. June to September is the long window and it is genuinely arid: 5 mm in June, 3 in July, 2 in August and 1 in September, with the thirty-year average showing no full wet day in any of those four months. January and February are the short window, 26 and 29 mm over four rain days each, drier than March but nothing like as dry as August.
Heat moves less than rain does, and it moves the other way from what you might expect. The coolest days of the year are in November, 28.9°C, in the middle of the heaviest rain. The hottest are in September, 32.4°C, at the end of four rainless months. Nights run from 18.2°C in January to 20.6°C in April and May, so a fleece is for dawn and nothing else.
September is the best month to see animals and the hardest month to be outside, and there is no way to have one without the other. After June, July and August have taken 10 mm between them, the seasonal water is gone and the Ewaso Ng'iro is doing all the work. Elephants come down to drink and cross daily, and Save the Elephants has been reading that same river traffic since 1997.
The cost is the afternoon. At 32.4°C, with nights at 19.3°C, the middle of the day belongs to shade. Drive from the 06:00 gate opening until mid morning, sit out the heat, and go again from four. If you want the same dry-season mechanism with a few degrees less of it, August averages 30.8°C and July 30.2°C, and both are still effectively rainless.
The reserve fee does not move. A non-resident adult pays $85 at Samburu National Reserve and $70 at Buffalo Springs or Shaba in every month of the year, because those amounts are set in county finance legislation rather than by demand. There is no wet-season discount at the gate and no published combined ticket across the two counties.
The flights do move, and their calendar is published. Safarilink's 2026 timetable puts low season at 1 April to 15 June and 1 November to 15 December, with high season covering 1 January to 31 March, 16 June to 31 October and 16 to 31 December. The fare itself is listed as identical in both, $289 one way and $473 return before taxes, so what changes with the season is availability and the extra high-season service rather than the price.
Camp rates are harder to pin down, because almost nothing in this region publishes a rack rate. Sarara, out in Namunyak Conservancy, is one of the few with a public rate card, and it runs from $1,110 per person per night in the quiet months to $1,515 in July, August and the festive period. That shape, a peak in the middle of the long dry plus Christmas, is the pattern to expect elsewhere.
