Indonesia in March: Weather, Crowds & What to Expect

Sumatra (Northern and Western Sumatra)

Persistent showers and high humidity mark March, though the heaviest monthly totals often start to ease toward the end of the month. Medan’s streets still see afternoon flooding at times, and jungle trips to Gunung Leuser require waterproofs and insect protection; slippery boardwalks swap views for careful footing. By late March some travelers catch a dry window for trekking around Berastagi, but most should plan for wet conditions and flexible itineraries.

Java & Bali (Central and Eastern Java, Bali, Lombok)

As March progresses the rains begin to thin in parts of central Java, though thunderstorms are still frequent and Nyepi - the Balinese Day of Silence - usually falls this month; expect airports and businesses in Bali to close for the holiday day. Coastal ferry services between Java and Bali can be bouncy in rough seas. Trekking on Bromo and Ijen needs caution due to wet trails, and boat-based diving trips are often limited by swell.

Kalimantan (Indonesian Borneo)

Showers remain common in March, though some pockets start to see slightly fewer storms by the month’s end. The river transport that links remote communities can be choppy and brown with runoff, affecting timetables. For those visiting Tanjung Puting or remote longhouse stays, bring waterproof bags and plan extra days; the local atmosphere is dense and green, but expect a lot of wet boots and damp clothing.

Sulawesi & the Maluku Islands

Rain begins to ease slightly in parts of March, but the island’s complex topography means microclimates persist - the Toraja plateau still sees wet days while northern coasts may have clearer intervals. Ferry crossings to the Maluku islands remain weather-dependent; Ambon’s bays can be rough. If visiting Toraja for its ritual calendar, be ready for muddy conditions and flexible logistics.

Nusa Tenggara & Komodo (Lombok, Sumbawa, Flores, Sumba, Komodo National Park)

By March rainfall remains frequent but is often interspersed with sun, especially on the more easterly islands; Flores and Komodo can have dramatic cloudscapes that enhance photography. Beaches may be quiet and some dive operators reduce schedules due to swell. Travellers should take an open schedule and be prepared for last-minute boat changes, but will find fewer crowds and lower prices for lodging.

Papua (Western New Guinea: Highlands and Coastal Papua, Raja Ampat area)

Persistent rains often remain through March, though some periods of clearer weather can appear; coastal islands are still prone to squalls and the highlands are typically muddy. Flights to interior airstrips may be delayed and river levels are high, while the lush rainforest is at its fullest. Travellers who enjoy dramatic, green landscapes and more solitude will find low tourist numbers, but should accept frequent weather interruptions.