Best time to dive Komodo 2026: April-November window

The numbers that matter

Komodo sits in the Indonesian island chain between Sumbawa and Flores, in a strong tidal corridor that funnels current from the Indian Ocean to the Flores Sea. The water that moves through this corridor brings nutrients, big animals, and challenging dive conditions. Two distinct dive areas — the north (warmer, calmer, year-round-ish) and the south (colder, more pelagic, summer-only) — operate on different windows.

Month-by-month breakdown

What each season actually feels like

April to June: the warm season opens

Komodo dive season kicks off in April. By the second week, most liveaboards are running, and conditions are stabilising at 20-25m visibility across both the north and south.

This is the first manta peak of the year. Manta Alley in the south delivers reliable sightings from late April through June. Mantas at Karang Makassar (the “manta point” of the north) appear in the same window. Water temperature is comfortable — 27-29°C in the north, 24-27°C in the south.

Currents are still strong throughout this window. The “tide table dive” rule applies year-round at Komodo: you dive specific sites at specific stages of the tide because the current direction reverses every six hours and the wrong stage of the tide can make a site undivable.

April and May tend to have the fewest divers of the active season. By June, liveaboard cabins are filling for the summer peak.

July and August: cold water in the south

This is the part that surprises first-time Komodo divers.

The southern dive sites — Manta Alley, Cannibal Rock, Yellow Wall, Pillarsteen — sit in water that drops to 20-22°C in July and August. On the coldest days, the thermocline at 15m can hit 18-20°C. This is significantly colder than most tropical diving and requires a 5mm wetsuit minimum. Some divers add a hood. Drysuit is overkill for this water and most operators do not stock them.

The trade-off for cold water is pelagic action. The southern sites in July and August deliver oceanic sunfish (mola alexandrini, a relative of the Bali mola), grey reef sharks, occasional hammerheads, and the densest macro life of the Indonesian archipelago at Cannibal Rock.

Northern sites stay warm — 27-29°C — through this window. Liveaboards that run north-only itineraries during summer offer warmer comfort at the cost of missing the southern pelagic action.

September and October: the second manta peak

September is the transition month. South Komodo water temperatures climb back toward 25°C through the month. Mantas return to the cleaning stations at Manta Alley as the water warms.

October is one of the strongest months of the year. The second manta peak runs through October and into early November. Visibility hits 25-30m at the best sites. Surface conditions are calm. Currents remain strong but predictable.

If you want one window that combines the best of both Komodo seasons, October is the answer. You get manta sightings at both Karang Makassar and Manta Alley, you get warm water again in the south, and you get the calmest seas of the year.

November: the soft end

November is the tail of the season. Liveaboards continue running through the month, but most stop their southern itineraries by mid-month as the storm season approaches. Visibility remains strong at 20-25m. Manta sightings are still reliable through the first half of the month.

By the last week of November, the first storm systems begin moving in. Operators start tapering their schedules and the last liveaboards of the season depart in early December.

December to March: the closed window

This is the part to avoid.

December through March is Indonesian storm season in the Komodo region. Surface conditions are rough, visibility drops to 12-18m at the open sites, and the southern dive sites are effectively closed.

Most reputable liveaboards do not run during this window. The few day-trip operators based in Labuan Bajo continue to run, but their itineraries are restricted to sheltered northern sites and weather cancellations are frequent.

The honest advice: do not book a Komodo dive trip for December through March. If your dates are non-negotiable, fly to Bali instead — Tulamben holds up better in the regional wet season than anything in the Komodo region.

Site-by-site, when each works

The “year-round” labelling here means year-round-within-the-season. None of the southern sites are realistically divable December through March.

The current question

Komodo currents are tide-driven, frequent, and strong. Operators run their schedules around the tide table, hitting each site at the specific tide stage that makes the dive work.

In practice:

• 3-4 sites per day, in tide-dictated order
• Negative entries are common — descend on splash before drift carries you away
• SMBs are mandatory at most sites
• Drift diving is dominant — the boat picks you up downstream
• Downcurrents at Castle Rock specifically can pull you below 30m

The current is the entire reason the diving is good. Plankton-rich water brings mantas, schooling pelagics, and dense reef ecosystems. Most reputable liveaboards require Advanced Open Water plus 30+ logged dives; some require 50+ dives and Nitrox for the southern sites.

Prices and crowds

• Cheapest: Last two weeks of November, first two weeks of April
• Mid-price: May, June, September
• Most expensive: July, August, October

A 7-night Komodo liveaboard ranges from roughly USD 1,800 in shoulder weeks to USD 4,500+ on premium boats during the August and October peaks. Day-trip diving from Labuan Bajo runs USD 120-180 per day.

Peak crowds align with August and October. “Crowded” means popular sites — Manta Alley, Cannibal Rock, Batu Bolong — where 5-10 liveaboards anchor for the night and divers cycle through across the day.

Combining Komodo with other Indonesian destinations

The natural pairing is Bali plus Komodo with a flight from Denpasar to Labuan Bajo (1.5 hours).

Strong combinations:

• May-June: Bali Menjangan or Nusa Penida + Komodo manta peak
• August-September: Bali Nusa Penida mola peak + Komodo cold-water south
• October-November: Bali shoulder season + Komodo second manta peak

Komodo does not combine well with Sulawesi or Raja Ampat in the same trip — the logistics burn too many days on transit.

What to pack regardless of month

• 5mm wetsuit if planning southern sites, especially July-October.
• Surface marker buoy. Mandatory at most sites.
• Dive computer with audible signaling.
• Reef-safe sunscreen. Required by national park rules.
• Cash USD for park fees — roughly USD 25-30 per day, separate from the liveaboard fare.

Putting it all together

If you want the best of Komodo in one trip, come in October — second manta peak, water warming back up in the south, calmest sea conditions of the year, and 25-30m visibility.

If you want the southern cold-water peak for pelagics and macro, come in August or September — accept the cold water in the south, expect peak crowds and prices.

If you want the manta peak with smaller crowds and lower prices, come in late April or May — the first manta peak runs in this window before the European summer pushes prices up.

Do not book Komodo for December through March. The destination is closed in any meaningful sense. Choose Bali, Raja Ampat (different season), or the Philippines instead.

Komodo rewards divers who can handle current and who plan around the tide-driven schedule. The pelagic action, manta encounters, and macro density rank among the strongest in Asia. Pick the right window for what you want to see, and the trip delivers what the liveaboard brochures promise.