Health and Safety in Indonesia

The real risks: traffic, not crime

Motorbike accidents are the most common cause of injury among tourists in Indonesia by a wide margin, not crime — rental scooters are everywhere and easy to hire with minimal paperwork, but Indonesian traffic conditions, road surfaces and driving norms differ enough from what many visitors are used to that a genuine helmet, a valid international driving permit and comprehensive travel insurance that explicitly covers motorbike use are worth treating as non-negotiable rather than optional. Many standard travel insurance policies exclude motorbike accidents by default or require riders to hold a locally valid licence, so checking the policy's fine print before renting is a real precaution, not paperwork for its own sake.

Stomach issues from food or water are the next most common travel-health complaint, generally addressed the same way as anywhere in the region — bottled or purified water, caution with ice outside established tourist restaurants (where it's usually made from purified water and considered safe), and normal food-hygiene judgement at street stalls. Dengue fever, transmitted by daytime-biting mosquitoes, is present across Indonesia, so mosquito repellent and covering up at dawn and dusk are worth building into a daily routine rather than only in one specific region. Strong currents affect some beaches, particularly on the Indian Ocean-facing south coasts of Bali and Java — checking local flag warnings before swimming is a real precaution at unpatrolled beaches specifically.

Volcanic activity: follow official advisories

Indonesia's volcanoes are genuinely active geological features, and eruption risk is managed through an official alert-level system that periodically restricts or closes access to specific craters or summit trails, including at popular sites like Agung, Bromo and Merapi. Checking the current official status for any volcano on a planned itinerary shortly before the visit, rather than assuming a popular trekking route is automatically open, is standard practice and occasionally changes an itinerary at short notice for genuinely good reason.

Local customs and laws worth knowing

Indonesia has the world's largest Muslim population, though Bali is majority Hindu and each island carries its own distinct customs. At temples across the archipelago, modest dress — a sarong and sash, often provided free or for a small donation at the entrance — is expected of every visitor regardless of religion, and shoes come off before entering both temples and private homes. The left hand is traditionally considered unclean in much of Indonesian custom, so handing or receiving things with the right hand (or both hands together for something formal) is the respectful default, and touching another person's head, even a child's in a friendly gesture, is generally avoided since the head is considered sacred in Balinese and broader Indonesian tradition alike.

Nyepi, the Balinese “Day of Silence” marking the Hindu new year, is a genuine, legally enforced 24-hour shutdown across Bali specifically — no traffic on the roads, no lights after dark, no leaving accommodation grounds, and the island's international airport closes for the full day. The rule applies to tourists exactly as it applies to residents, with no practical exception for travel plans, so checking the Nyepi date before booking flights or accommodation in or out of Bali around that period is worth doing well in advance rather than discovering the closure at the airport.