Gunung Leuser National Park
Ketambe, Indonesia UNESCO World Heritage Site

Gunung Leuser National Park is a national park in Indonesia and part of the Tropical Rainforest Heritage of Sumatra. It is a UNESCO World Heritage Site located within the Barisan Mountains.
Planning a visit
The park experiences significant rainfall throughout the year. The wettest months are October, November, and December, with nearly 500 mm of rain and approximately 27 or 28 rainy days each month. June and July are relatively drier, with about 20 rainy days and lower rainfall totals compared to the rest of the year. Daily temperatures typically range between 8 °C and 18 °C.
To reach the park, you can fly into Alas Leuser Airport in Kutacane, which is 42 km away. Kualanamu International Airport is a larger hub located 153 km from the area. The park is approximately 1,493 km from Jakarta. Visiting prices start at Rp 1,000,000 per day.
Weather by month
Temperatures stay much the same all year, around 13 °C on average. Rain is spread fairly evenly through the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Average high, °C | 17 | 17 | 17 | 18 | 18 | 17 | 17 | 17 | 17 | 16 | 16 | 16 |
| Average low, °C | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 9 | 9 | 9 | 9 |
| Rainfall, mm | 374 | 292 | 411 | 422 | 421 | 245 | 253 | 299 | 423 | 481 | 484 | 423 |
| Rainy days | 23 | 20 | 24 | 26 | 24 | 22 | 20 | 24 | 26 | 28 | 27 | 27 |
Temperatures and rainfall: 1981–2010 averages for this spot (4 km grid), from CHELSA. Rainy days: 2015–2024, NASA POWER.