Indonesia is enormous, stretching more than five thousand kilometres from west to east across some seventeen thousand islands. That scale is part of its magic, but it also means a little planning goes a long way. This practical guide covers the essentials so you can spend your energy on the beaches, volcanoes and jungles rather than the logistics.
When to Go
Indonesia has an equatorial tropical climate, warm and humid year-round, with two main seasons rather than four. The dry season, roughly from May to September, is the most popular time to travel, bringing sunnier skies and calmer seas ideal for islands, diving and volcano treks. The wet season, from around October to April, sees heavier rainfall, often in short intense afternoon downpours. Because the archipelago is so vast, conditions vary between regions, so it is worth checking your specific destination.
Getting Around: Islands, Skies and Roads
With so many islands, domestic flights are the backbone of long-distance travel. Airlines such as Garuda Indonesia, Lion Air and Citilink connect major hubs like Jakarta, Bali, Yogyakarta and Surabaya with regional airports across the country. Booking ahead usually saves money.
- Ferries and boats link neighbouring islands, from large car ferries to fast passenger boats serving places like the Gilis and Komodo.
- Trains run only on Java, where a comfortable and scenic rail network connects cities such as Jakarta, Bandung, Yogyakarta and Surabaya.
- Scooter rental is popular in tourist areas for short distances, though it requires care, a helmet and a valid licence.
- Ride-hailing apps like Grab and Gojek make getting around cities cheap and easy, offering cars and motorbike taxis at fixed prices.
Money and Costs
The currency is the Indonesian rupiah, abbreviated IDR. Prices are quoted in large numbers, so it helps to get used to the zeros. Cash is still king in markets, small warungs and rural areas, while cards and digital payments are common in cities and hotels. Overall, Indonesia is an affordable destination: simple local meals, guesthouses and public transport cost very little, though resorts and imported goods can be far more expensive.
Visas and Entry
Many nationalities can enter Indonesia using a visa on arrival, increasingly available as an electronic e-VOA obtained online before travel. It typically grants a stay of thirty days and can usually be extended once for a similar period. Rules change over time, so always confirm the current requirements for your passport before booking, and make sure your passport has enough validity and blank pages.
Health and Staying Well
Consult a travel clinic before your trip about recommended vaccinations. Malaria is not present in the main tourist areas but can occur in some remote regions such as parts of Papua, so ask about prophylaxis if you plan to go off the beaten track. Drink bottled or purified water rather than tap water, be sensible with street food by choosing busy, freshly cooked stalls, and pack sunscreen, insect repellent and a basic first-aid kit. Travel insurance that covers medical care and evacuation is strongly recommended.
Etiquette and Culture
Indonesia is a diverse society, largely Muslim with significant Hindu, Christian and other communities, and respectful behaviour is always appreciated. When visiting temples and mosques, dress modestly, covering shoulders and knees, and remove your shoes where required. Use your right hand for giving, receiving and eating, as the left is considered unclean. Ask before photographing people, and be mindful during prayer times and ceremonies. A friendly smile and a few words of Bahasa Indonesia go a long way.
Language, Safety and Practicalities
The national language is Bahasa Indonesia, straightforward to pick up at a basic level, and English is widely understood in tourist areas. Indonesia is generally safe for travellers, though normal precautions against petty theft and scams apply, and you should respect warnings around active volcanoes and strong currents. Electrical outlets are type C and F at 230 volts, so European-style plugs fit and travellers from other regions need an adapter. Pack light, breathable clothing for the heat, along with a layer for cool mountain nights and modest attire for religious sites, and you will be ready for almost anything the archipelago offers.