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September marks the return of excellent diving conditions as winds die down and visibility climbs. This is the start of the second peak window for Komodo diving.
Water Temperature
26-29°C
Visibility
12-22m
Crowds
Medium
Pricing
Moderate
September marks the beginning of Komodo's shoulder season, a transition period that offers experienced divers excellent conditions at increasingly attractive prices. The peak season crowds have departed, and while conditions gradually shift, September still delivers remarkable diving by any global standard.
Visibility ranges from 10-18 meters — reduced from the peak season highs but still excellent for most diving purposes. The water begins warming as southern winds ease, with temperatures of 26-29°C creating comfortable diving conditions without heavy exposure suits.
The manta sites transition in September. Southern cleaning stations see reduced activity as the plankton-driven upwellings weaken, but northern sites begin to pick up. Mantas are still very much present — they simply shift their feeding patterns. Experienced dive guides know exactly where to find them during this transitional period.
The pinnacle sites remain outstanding in September. Castle Rock, Crystal Rock, and Batu Bolong continue to deliver world-class drift diving, with currents that are strong but often more manageable than during peak season. This makes September excellent for divers who found July-August currents intimidating.
The reduced crowds are September's greatest asset. Popular sites feel spacious, dive boats run at comfortable capacity, and dive guides can offer more personalized attention. The relaxed atmosphere extends to Labuan Bajo, where restaurants and accommodations are easier to book.
September weather is dry and warm with decreasing winds. The calmer seas make boat crossings more comfortable than the peak wind months, and the warm evenings are perfect for post-dive socializing at Labuan Bajo's waterfront.
September's slightly reduced visibility creates warmer, more atmospheric images than the crystal-clear peak months. Use this to your advantage with moody wide-angle compositions. The reduced crowds mean more time at each site to set up shots carefully. Manta encounters in transitional waters often feature dramatic green-blue gradients that create compelling backgrounds.
September is the shoulder season sweet spot — 80% of peak conditions at 70% of the price, with a fraction of the crowds. Book sites you couldn't get near in July-August. The current tables show more moderate flows that are manageable for Advanced Open Water divers, opening up pinnacle sites to a wider range of abilities. Request afternoon manta dives at northern cleaning stations.