North Sumatra holds Lake Toba, the world's largest volcanic crater lake, and the Bukit Lawang reserve where rehabilitated orangutans swing through the Gunung Leuser jungle canopy.
Highlights
Lake Toba
Bukit Lawang
Medan
Berastagi
When to Visit
May-Sep
Drier season with Bukit Lawang trekking at peak orangutan visibility, Lake Toba at its calmest, and Sipiso-Piso waterfall accessible from Berastagi.
Jun-Aug
Lake Toba Festival in mid-September aside, the late dry season offers Tuk Tuk peninsula at peak photogenic, and Berastagi's Sibayak volcano summit clear.
Oct-Apr
Wet season with afternoon storms, Bukit Lawang's rivers at peak flow, and Lake Toba's mist mornings particularly photogenic before the day's clouds.
Mar
Galungan Hindu festival aside, March brings the rains tapering and the Karo highlands' fruit harvest filling Berastagi's roadside markets.
Best time to travel — world map
Explore the best months to travel around the world based on weather, temperature, and travel conditions.
Best time to visit Europe
Explore the best months to travel across Europe based on weather, temperature, and travel conditions.
Best time to visit Asia
Discover when to travel across Asia, from Southeast Asia to East Asia, based on climate and weather patterns.
Best time to visit Italy
Plan your trip to Italy with monthly insights on temperature, rainfall, and travel conditions.
