Where Is Sumatra?

The Location of Sumatra in Indonesia, Getting There, and Things to Do

Where Is Sumatra?
••• Sumatra is green, volcanic, and adventurous!. Greg Rodgers

It sounds far and exotic, but exactly where is Sumatra?

The very name of the sixth-largest island in the world conjures images of jungle expeditions, volcanoes, orangutans, and tattooed indigenous tribes. But, for once, that isn't just a Hollywood exaggeration! Sumatra boasts all of those things, and more, once you escape the cities.

Located at the far western edge of the archipelago, Sumatra is the largest island that is entirely in Indonesia. Borneo is actually bigger, but it's split between Indonesia, Malaysia, and Brunei. Sumatra pretty well forms the western edge of Southeast Asia, one last piece of land before the endless Indian Ocean begins.

Sumatra is oblong shaped, angled from northwest to southeast. The eastern edge comes surprisingly close to Peninsular Malaysia and Singapore. The relatively narrow Strait of Malacca separates the two landmasses.

The southern tip of Sumatra bumps up against Java, with the capital of Jakarta nearby. Perhaps that's the beautiful irony of Sumatra — and an indication of it's diversity. Despite being geographically very close to highly developed places such as Kuala Lumpur, Singapore, and Jakarta, you'll can still easily find deep jungle and indigenous people who follow old traditions.

More About the Location of Sumatra

  • The Equator divides Sumatra neatly between the northern and southern hemispheres.
  • Sumatra is located south of Thailand and Burma (Myanmar); west of Malaysia and Singapore.
  • Jakarta, the capital of Indonesia, is in Java not far from the southeast tip of Sumatra.
  • India and Sri Lanka are located across the Indian Ocean northwest of Sumatra.


Sumatra could be unofficially carved into three regions: North Sumatra, West Sumatra, and South Sumatra. North Sumatra gets the most attention from travelers. Most arrive in Medan and head to Lake Toba (the largest volcanic lake in the world), the interesting island in the middle, and Bukit Lawang — the base town for treks to observe orangutans in the Gunung Leuser National Park.

West Sumatra comes in second for tourism, however, it mostly caters to skilled surfers and serious travelers looking for outdoor adventures a little off the beaten path. Both regions could easily wind up on the well-trodden backpacker "Banana Pancake Trail" one day but so far have seen stunted growth for tourism. Empty guesthouses abound.

Don't think that just because Sumatra harbors orangutans and potentially uncontacted tribes that it's all about thatched huts and dirt roads. At least six of the busy cities have populations of over a million people. Traffic can be horrific. Medan, the capital of North Sumatra, is home to way over 2 million people and the second largest airport in Indonesia.

About Sumatra, Indonesia

  • Sumatra is the sixth-largest island in the world.
  • Over 50 million people call Sumatra home (per 2014 census) making it the fifth most populous island in the world. Indonesia ranks fourth in world population, just behind the United States.
  • Sumatra is oriented from northwest to southeast; it is approximately 1,110 miles from tip to tip.
  • Sumatra is one of only two places in the world to see wild orangutans (Borneo is the other).
  • The fertile volcanic soil in Sumatra grows some of the best coffee in the world. One of the most expensive varieties, kopi luwak, is "processed'" by feeding coffee cherries to civets — weasel-like animals — in Sumatra. Today, there are lots of knockoffs, but the original kopi luwak came from Sumatra.
  • The Batak, a term given collectively to the Karo and other indigenous tribes in Sumatra, once practiced headhunting and ritual cannibalism. Marco Polo passed on second-hand accounts of cannibalism in 1292 despite not witnessing it himself. The practice was rare after the 19th century.
  • Lake Toba, the largest volcanic lake in the world, was formed during a cataclysmic explosion. The event actually altered temperatures across the planet. The resulting crater is 62 miles long, 18 miles wide, and 1,600 feet deep in some places! The water stays a comfortable temperature thanks to geothermal activity. Volcanic pressure has even forced a new island, Pulau Samosir, to form inside of the lake. Lake Toba is a favorite of budget travelers.

Getting to Sumatra

The most popular entry point for travelers visiting Sumatra is Medan. Sumatra is connected via Kualanamu Internationakl Airport (airport code: KNO). The new international airport replaced the old Polonia International Airport in July 2013.

There are no direct flights between North America and Sumatra. Most flights connect to Kuala Lumpur, Singapore, or other points in Indonesia. Travelers from the United States should book to a major hub such as Bangkok or Singapore then grab a cheap budget hop to Medan. Flights to and from Bali are also easy to find.

For travelers wanting to explore West Sumatra, Padang (airport code: PDG) is the best entry point. From there, many people head a few hours north and use the smaller town of Bukittinggi as a base for exploring the region. Experienced surfers head west to the Mentawai Islands just off the coast.

Sumatra is big, very big. The rough roads and wild driving practices can be very trying for travelers. Think carefully before opting for the 20-hour bus between North Sumatra and West Sumatra rather than taking a cheap flight. Also, plan plenty of extra time — both for rest and buffer days — if you intend to explore more than one region of Sumatra on a trip.

Adventurous Destinations in Sumatra

  • Lake Toba: Pulau Samosir, an island, has risen up in the middle of the world's largest volcanic lake. The lake is great for relaxing, adventure activities, and for learning about the Batak culture found there. Tuk-tuk is the name of the tourist town on Pulau Samosir.
  • Bukit Lawang: The small, riverside village is the usual base for exploring Gunung Leuser National Park, a popular choice for short or long jungle treks to see wild and semi-wild orangutans.
  • Gunung Sibayak: Using the town of Berastagi as a base, adventurers can climb inside the crater of Gunung Sibayak, Sumatra's easiest volcano to tackle. But don't be fooled: Gunung Sibayak is still tough. The high-pressure gases being vented and boiling streams along the way are a constant reminder that the volcano is still active!
  • Gunung Sinabung: Sibayak's neighbor, Gunung Sinabung, once took around 12 hours to climb, but it's been in a constant state of eruption since 2013! The volcano was dormant for nearly 400 years before unexpectedly exploding and forcing evacuations.
  • Gunung Marapi: West Sumatra's big active volcano can be climbed in about 10 hours return, but it's hard work!
  • Gunung Kerinci: Located between West Sumatra and South Sumatra, Mount Kerinci is the highest volcano in Indonesia. You'll need lots of stamina and a guide to tackle this one.
  • Lake Maninjau: If climbing volcanoes is too much or you just need a break, the massive Lake Maninjau in West Sumatra is a quiet place to relax and enjoy fish.

Before setting off into Sumatra's wilds, you should know some hiking safety for the region and how to avoid monkey bites — you'll encounter plenty in Sumatra.

The Palm Oil Problem in Sumatra

Look out the window during your approach to land in Sumatra. You'll see manicured palm plantations that sprawl for miles in every direction. They may look nicer than urban sprawl, but they do pose a serious ecological problem.

Sumatra and Borneo account for more than half of all palm oil produced in the world. The two islands suffer from the worst deforestation on earth — even worse than the often publicized plight of the Amazon. What's worse, slash-and-burn agricultural techniques are so large scale in Sumatra, they make a sizable addition to the annual greenhouse gas released for the planet. The seasonal smoke then drifts over to choke up Kuala Lumpur and Singapore, causing health and economical strains.

Although sustainable palm oil is a good thing, most is produced nefariously unless it can be certified otherwise. Avoiding products that use cheap palm oil may be the only hope for Sumatra.

Palm oil isn't just for cooking; it's used to make SLS (sodium laureth sulfate) and derivatives that help soaps, shampoos, toothpastes, and a variety of products to lather. Palm oil is also used as a biofuel to supplement petrol, despite high inefficiency.

The uncontrolled deforestation in Sumatra has pushed many endangered species such as tigers, orangutans, rhinos, and elephants nearer to extinction.