Best time to see orangutans in Sumatra especially in Bukit Lawang starting from May to September. During this time, it is the post-fruiting and orangutans more active with less natural food. They are often seen near jungle trekking path and come down near feeding platform. During this period, it is a dry season and offer safer condition for trekking. The peak season is during May to July. When the fruits season normally between April to November, the orangutans often staying deep in jungle and sighting less than frequent.

For daily trip between the dry season where you find the orangutans actively looking for food near the trails, the best time to see orangutans is during early morning. If you are interested in seeing the orangutans, you may book the Bukit Lawang jungle trekking or the combination of Bukit Lawang tour package below:
Since you are in North Sumatra, your trip won’t be complete without a visit to Lake Toba, which is just a few hour drive away or a Medan hiking tour to Mount Sibayak. Here are the Medan tour package and hiking trip:
Bukit Lawang is a small village located in North Sumatra Province, bordering a tropical rainforest. This place is widely known as one of the best places to see orangutans in Indonesia to in their natural habitat.
The habitat itself is part of Mount Leuser National Park. This area is a vast conservation area rich in biodiversity, home to iconic species such as orangutans, tigers, and gibbons.
Visiting Bukit Lawang to See Orangutans
The Sumatran orangutan is a species that is now endangered. Bukit Lawang itself is a location that serves as the starting point for trekking in the forest to observe wildlife.
The trekking trail starts from this village and follows the Bohorok River to enter the lush rainforest. Inside the forest, tourists have a great opportunity to observe orangutans as they search for food or move through the trees.

With Bukit Lawang’s geographical location approximately 86 to 90 km northwest of Medan, this location is easily accessible to both tourists and researchers. The warm and humid tropical climate creates two distinct seasons: rainy and dry. Each offers a unique experience for seeing orangutans in Bukit Lawang’s wild nature.
Reasons Why Orangutans Are Found in Bukit Lawang
The Sumatran orangutan (Pongo abelii) is one of the rarest great apes in the world. This species is classified as Critically Endangered due to its declining population caused by habitat destruction, poaching, and conflicts with humans.
Bukit Lawang is one of the important areas where tourists can still encounter these orangutans in their natural habitat. Without adequate protection of the forest area, the population of wild orangutans could continue to decline.
In addition, this village is located on the edge of Gunung Leuser National Park. This is a vast tropical rainforest area and part of the Leuser Ecosystem, which has been recognized by UNESCO.

This ecosystem covers millions of hectares of dense forest that supplies food, provides shelter, and migration routes for various types of animals. These include orangutans, Sumatran tigers, elephants, and rhinos. The relatively well-preserved forests in this area are one of the main reasons why orangutans can live in this region.
Since 1973, Bukit Lawang has been recognized as a center for orangutan conservation and rehabilitation. Initially, this location was home to the Bohorok Orangutan Rehabilitation Center, where orangutans that had been captured or kept as illegal pets were cared for and trained. Although the rehabilitation center has since moved, its legacy remains important in history.
The Best Season to See Orangutans
Well, the best time to see orangutans in Bukit Lawang, there are several ideal times. Visitors can come from May to September. This is because it is the dry season, so the hiking and trekking trails are not slippery, easy to navigate, and there are many tourists.
You can also visit from October to April if you don’t want to deal with crowds. However, the hiking trails are slippery and muddy.
How to See Orangutans
As mentioned earlier, after knowing the best time to see orangutans in Sumatra, trekking with an experienced local guide is essential for seeing orangutans in Bukit Lawang.
This is because guides have a thorough understanding of the trails and areas where orangutans are usually spotted. In addition, Mount Leuser National Park requires the use of certified guides to enter the forest area as a conservation measure and to ensure safety.

Trekking usually begins in the morning when the animals are more active in search of food. Orangutans can often be seen in the trees or moving towards food sources. Therefore, the chances of seeing them are greater in the morning until noon. In addition, the duration of the trek can vary from a few hours to several days, depending on the package chosen.
The length of the trek also affects the likelihood of encountering orangutans. Therefore, the longer you stay in the forest, the greater the chance of seeing these animals in various situations. On the other hand, a one-day trek usually lasts 6-7 hours. Meanwhile, a multi-day trek allows for a more in-depth exploration. During this multiple days staying, you will find also the best things to do in Bukit Lawang where you can tubing, visit waterfalls, bird watching and many more.
Things to Know When Seeing Orangutans
When seeing orangutans in Bukit Lawang, it is very important to maintain a safe distance. Do not disturb or feed the animals, and obey all instructions from the guide.
This is very helpful in maintaining the natural behavior of orangutans and ensuring the safety of both visitors and animals there. In addition, this ethic also supports sustainable conservation efforts to preserve the orangutan population.
You May Also Like:
- Things to do in Medan
- Things to do in Lake Toba
- Things to do in Samosir
- Cheap Medan Packages
- Padang Tour Package
- Mentawai Tribe Tour
Keep in mind that orangutans are sensitive to human presence. Loud noises or sudden movements can cause them to flee deep into the forest. Therefore, when at the observation site, it is important to move quietly, calmly, and patiently.

Choosing the right time to see orangutans in Bukit Lawang depends on your weather preferences, comfort level with trekking, and the level of crowds.
The dry season between May and September is the ideal time. This is because the trails are drier and the chances of seeing orangutans are higher. However, there are also more tourists.
See Also:
Meanwhile, the rainy season offers a more lush forest experience with fewer tourists. However, the trekking trails are more challenging.
Orangutans are a species that must be protected, as must the forests that are their habitat. When visiting, you must comply with the applicable rules. By considering all of the above factors and choosing the best time to see orangutans in Sumatra especially in Bukit Lawang can be an unforgettable experience.