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Indonesia Weather by Region: When to Go & What to Expect
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Gita and Xavi
Living in Indonesia since 2023
Indonesia's weather is… complicated. "Tropical" is technically correct and useless when you're picking a two-week window. Different islands have different seasons — and Sulawesi flips the pattern entirely compared to Bali.
Use the tabs below for live forecasts and a 12-month chart for each region we cover in our guides. This page replaces our old standalone weather tool — same data, now inside the article you're reading.
The short version
·Most of Indonesia (Bali, Java, Flores/Komodo): dry April–October; wet November–March.
·North & East Sulawesi: best October–April for diving and calm seas.
·Wet season rarely means all-day rain — usually a 1–2 hour afternoon storm and clear mornings.
Yogyakarta & East Java
Target May–September for Borobudur sunrise with Merapi visible and Bromo without summit clouds. East Java (Malang, Ijen) is humid year-round; dry season makes volcano hikes safer and views clearer.
Bali, Lombok & Gilis
May–June or September is our sweet spot: great weather, fewer tourists than July–August. Wet season still works for café-hopping and morning beach time — prices drop 20–35%. Ferry-heavy Gilis trips need extra buffer in wet months.
Flores & Komodo
April–June is the sweet spot: calm seas, mantas, best visibility. Avoid October–March for liveaboards — many operators close. See our [Komodo cruise guide](/articles/best-komodo-cruises) for boat-specific timing.
Sulawesi (North, South & East)
North and East: plan October–April for Bunaken, Banggai and calm crossings. South (Makassar, Toraja): drier May–October; highlands cool at night any month.
Other regions worth knowing
Raja Ampat flips the calendar — best October–April. Don't stack it in July just because you're already in Bali. Sumatra (Bukit Lawang): drier June–August for orangutan trekking.
Rainy-season mindset & packing
Wet season is lush, cheap and quiet — bad for boat-heavy routes and volcano summits; great for Bali/Java if you can flex around afternoon storms. Pack reef-safe sunscreen year-round; add a packable rain jacket and quick-dry layers for wet months. Travel insurance that covers volcano-related flight delays (Agung, Merapi) is worth it.
Our favourite window: May or early June — dry season starting, manta season in Komodo, crowds not yet at peak.
Live 7-day forecasts for each region in our guides — updated hourly.
Our local tips
Shoulder seasons are best
May–June and September–October have great weather and fewer tourists.
Pack light rain gear
Even in dry season, afternoon showers happen. A packable rain jacket beats an umbrella.
High altitude = cold
Ubud, Batur sunrise, Bromo and Rinjani can get cold at night. Bring a layer.
Dive seasons flip
North & East Sulawesi are best Oct–April when Bali is in wet season.
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