There is a wide variety of animal and birdlife seen at Samburu National Reserve. Several large game species common to Kenya's northern plains can be found in abundance here, including the following dry-country fauna: Gerenuk, Grevy's Zebra, Oryx, and reticulated giraffe. All the three big cats,elephant, cape buffalo and hippopotamus are found here. Other mammals frequently seen in the park include Olive baboon, warthogs, grants gazelle, kirks dik-dik, impala and waterbuck.
There are over 350 species of birds including vultures, Secretary birds, sunbirds, northern red-billed hornbill, and many more varieties. The Ewaso Ng'iro river contains large numbers of Nile crocodiles.
Best Time To Go June to October
High Season December to March 
Size 163 square Kilomteres During the month of June and October, it's normally a dry season at Samburu reserve.
Pros:
Cons:
Samburu can be visited year-round, but wildlife watching is usually best in the dry months from June to October and December to March. It is wise to avoid the height of the Wet seasons (November, April, and May). During these months, spotting wildlife (which has spread out anyway with the availability of water) in the long grass is more challenging.
There is a wide variety of animal and birdlife seen at Samburu National Reserve. Several large game species common to Kenya's northern plains can be found in abundance here, including all three big cats, the lion, cheetah, and African Leopard.
Several dry-country adapted mammals that don't occur in most Kenyan parks can be found here. The reticulated giraffe has a more striking pattern than the common Masai Giraffe. Beisa Oryx is particularly well adapted to arid conditions. The gerenuk with its elongated neck is able to stand on its hind legs to reach sparse leaves. Both the common Burchells Zebra and the bigger Greveys Zebra are found next to each other.
Samburu’s climate is generally hot and dry, although it cools down at night. The daytime temperature is usually in the region of 32°C/90°F, while the average at night time is 15°C/59°F. We encourage you to bring warm clothing for game drives in the early morning. The rainiest periods occur in April and November, but annual rainfall is low. The ‘long rains’ usually occur from mid-March to mid-May and the ‘short rains’ from mid-October to mid-December.
Giraffe
Elephant
Zebra
Leopard
Buffalo
Lion
Cheetah
Giraffe
Elephant
Zebra
Leopard
Buffalo
Lion
Cheetah
Samburu is located 355km/220mi north of Nairobi. Self-drive to the reserve is an easy option and the driving time is about six hours. There are also daily scheduled flights from Nairobi to Samburu’s airstrip.
Driving from Nakuru NP is also an option. The distance is about 300km/190mi and the driving time is roughly five and a half hours.
Safari-goers flying from Europe or North America to Kenya usually arrive at Nairobi – it’s the largest hub for most transport (including flights) in the region. The main airport is Jomo Kenyatta International Airport (NBO), which is located 15km/9mi southeast of Nairobi. Kenya’s second international airport is Moi International Airport (MBA), which is 9km/6mi west of Mombasa.
Best Time June to September & to January to February
High Season June to October & December to March
Low Season April to June
Best Weather June & December (After the rains) 
Worst Weather April (A lot of rains) Best Time: June to September and January to February is best for general wildlife viewing (Little to no rainfall)
High Season: December to March and July to October (The reserve can get quite busy)
Low Season: April to June (Low season rates may apply)
Best Weather: June and December (It tends to be cooler and fresher after the rains)
Worst Weather: April (Wettest month)
This time of year is marked by hot and sunny days with almost no rainfall being recorded.
The Wet season is defined by the ‘short rains’ followed by the wetter ‘long rains’. The months of January and February are a dry period that separates the shorter and longer rains.
Samburu is considered a very safe destination. In general, crime issues that exist in urban areas do not affect any of the developed parks or reserves in Kenya. Visitors traveling independently should exercise caution in cities and towns between parks.
Your doctor can provide advice about which vaccinations you need before a trip to Kenya. Malaria is a risk when traveling around the country. It is advisable to take antimalarials and other safeguards, such as covering up at dusk and using mosquito repellent containing a minimum of 30% DEET. You should spray your room before bedtime if you don’t have a mosquito net. Malaria risk is worst in the peaks of the rainy seasons from April to May and October to November.
During the day, Samburu’s climate is hot and dry, although it cools down at night. The daytime temperature is usually in the region of 32°C/90°F, while the average at nighttime is 15°C/59°F. It is a good idea to bring warm clothing for game drives in the early morning. The rainiest periods occur in April and November, but annual rainfall is low. The ‘long rains’ usually occur from mid-March to mid-May and the ‘short rains’ from mid-October to mid-December.