Health Guide

Bali Health & Vaccinations — Medical Guide for Travellers

Updated March 2026 6 min read

In This Guide

Staying healthy in Bali is straightforward with the right preparation and awareness. While the island is not a high-risk destination by tropical standards, it does present specific health considerations that every traveller should understand before departure. From vaccinations and Bali Belly prevention to mosquito-borne diseases and sun protection, a little advance planning goes a long way in ensuring your trip is defined by incredible experiences rather than health setbacks.

Bali Malayali has guided thousands of travellers through health preparation for their trips, and we have seen how proper planning prevents problems. The most common health issues we encounter are entirely preventable — travellers' diarrhoea from unfamiliar food, severe sunburn from underestimating equatorial UV, and dehydration from not drinking enough water in the tropical heat. More serious concerns like dengue fever and scooter injuries are also largely preventable with the right precautions.

This guide covers everything from pre-trip vaccinations and what to pack in your medical kit to dealing with common ailments, finding quality medical care, and the specific health risks that Bali presents. The Bali Malayali team wants you to arrive prepared and confident, knowing exactly how to keep yourself healthy throughout your entire stay on this beautiful island.

Recommended Vaccinations for Bali

No vaccinations are legally required to enter Bali (unless you are arriving from a yellow fever endemic country), but several are strongly recommended. Ensure your routine vaccinations are up to date: measles-mumps-rubella (MMR), diphtheria-tetanus-pertussis, varicella, and your annual flu shot. Hepatitis A is highly recommended as it is transmitted through contaminated food and water. Hepatitis B is recommended for longer stays or if you might need medical treatment. Typhoid is recommended as it is food and water-borne. Rabies vaccination is worth considering if you plan extended rural travel or animal interactions — Bali has stray dogs and temple monkeys. Japanese Encephalitis may be recommended for stays over one month in rural areas. Consult your travel doctor 6–8 weeks before departure, as some vaccinations require multiple doses over several weeks.

Bali Belly — Prevention & Treatment

Bali Belly (travellers' diarrhoea) is the most common health issue affecting visitors, with 30–50% of travellers experiencing some degree of digestive upset. It is caused by exposure to unfamiliar bacteria in food and water — not necessarily from 'bad' food, but from bacteria your gut has not encountered before. Prevention strategies include drinking only sealed bottled water, avoiding ice at very basic establishments (upscale restaurants use filtered ice safely), eating freshly cooked hot food rather than room-temperature buffets, washing hands frequently with soap, and peeling fruit yourself rather than eating pre-cut fruit from street vendors. If you do get Bali Belly, the treatment is simple: oral rehydration salts, plenty of clear fluids, bland food (plain rice, bananas, toast), and rest. Most cases resolve within 24–48 hours. If symptoms include high fever, blood in stool, or persist beyond 3 days, seek medical attention immediately.

Mosquito-Borne Diseases

Dengue fever is the primary mosquito-borne risk in Bali, transmitted by Aedes mosquitoes that bite during daytime, especially at dawn and dusk. Symptoms include high fever, severe headache, joint and muscle pain, and rash. There is no specific treatment — medical care focuses on managing symptoms and preventing complications. Prevention is your best defence: use DEET-based insect repellent (30–50% concentration), wear light-coloured long sleeves and trousers at dawn and dusk, sleep under mosquito nets if your accommodation does not have screens or air conditioning, and eliminate standing water near your accommodation. Malaria risk in Bali itself is very low and antimalarial medication is generally not recommended. However, if you are travelling to remote Indonesian islands (Flores, Sumba, Papua), consult your travel doctor about antimalarials for those specific destinations.

Sun Protection & Heat Management

Bali sits just 8 degrees south of the equator, which means UV radiation is intense year-round — even on cloudy or overcast days, UV index regularly reaches extreme levels. Apply SPF 50+ sunscreen every 2 hours, especially after swimming. Wear a hat and UV-protective sunglasses. Seek shade during peak UV hours (10am–2pm). Drink at least 2–3 litres of water per day, more if you are active. Symptoms of heat exhaustion include dizziness, nausea, headache, and excessive sweating — if you experience these, move to a cool shaded area, drink water with electrolytes, and rest. Heatstroke is a medical emergency characterised by confusion, hot dry skin, and loss of consciousness — call emergency services immediately.

Medical Facilities in Bali

Bali has several international-standard medical facilities that cater to tourists. BIMC Hospital has two locations (Kuta and Nusa Dua) with 24-hour emergency departments, English-speaking doctors, and the ability to coordinate directly with international insurance providers. Siloam Hospital in Denpasar is a large modern hospital with specialist departments. Kasih Ibu Hospital in Denpasar is well-regarded for general care. For minor issues, pharmacies (apotek) are found throughout tourist areas and pharmacists can recommend and sell many medications without prescription, including antibiotics. For dental emergencies, Bali 911 Dental Clinic in Denpasar offers tourist-focused dental care. Always keep your travel insurance details accessible, as hospitals will typically require insurance confirmation or a cash deposit before treatment.

BIMC Hospital Kuta: +62 361 761 263

BIMC Hospital Nusa Dua: +62 361 3000 911

Siloam Hospital Denpasar: +62 361 779 900

Emergency ambulance: 118 or 119

Frequently Asked Questions

What vaccinations do I need for Bali?

No vaccinations are legally required, but Hepatitis A, Hepatitis B, and Typhoid are strongly recommended. Ensure routine vaccinations (MMR, tetanus) are current. Rabies vaccine is worth considering if you plan rural travel or animal encounters. Consult a travel doctor 6–8 weeks before your trip, as some vaccines require multiple doses.

How do I avoid getting Bali Belly?

Drink only bottled or filtered water, eat freshly cooked hot food, wash hands frequently, avoid ice at very basic warungs, and peel fruit yourself. Eat at busy establishments where high turnover means fresher food. Consider taking probiotics before and during your trip to help your gut adjust to new bacteria.

Is dengue fever a risk in Bali?

Yes, dengue fever is present in Bali and cases occur year-round with higher risk during wet season. Prevention through DEET-based insect repellent, wearing long sleeves at dawn and dusk, and eliminating standing water is the best defence. There is no vaccine widely available for tourists. Seek medical attention if you develop high fever with severe headache and joint pain.

Do I need malaria tablets for Bali?

No, malaria risk in Bali is very low and antimalarial medication is generally not recommended for Bali travel. However, if your Indonesia trip includes remote islands like Flores, Sumba, or Papua, your travel doctor may recommend antimalarials for those specific legs of your journey.

Are hospitals in Bali good?

Bali has several international-standard hospitals. BIMC Hospital (Kuta and Nusa Dua) is the top recommendation for tourists, with English-speaking staff, modern equipment, and direct insurance billing. For serious conditions requiring specialist care, medical evacuation to Singapore is arranged — which is why comprehensive travel insurance is essential.