The Thousand Islands (Kepulauan Seribu) spreads across a chain of small islands offering a broad mix of natural reefs, artificial reef structures and wreck sites, all reached by boat. Most sites suit beginners, with a handful of wrecks and deeper reefs drawing intermediate divers. Water stays consistently warm year-round. Common Clownfish, Cardinalfish and Staghorn Damsel are encountered across nearly every site, while Indian Lionfish, Harlequin Sweetlips and Bluespotted Fantail Ray are the region's signature sightings.


Monthly water temperature across Thousand Islands (Kepulauan Seribu)'s sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature holds steady and warm throughout the entire year, varying only slightly between the coolest and warmest months. The best conditions for diving cluster from April through October, when visibility tends to improve. Currents are generally mild across most sites, making the region accessible to divers of varying experience levels.
28 operators
Water around Thousand Islands (Kepulauan Seribu) stays near 30°C all year, based on satellite sea-temperature data for its dive sites.
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With water around 29–30°C, a rash guard or 3mm shorty works in Thousand Islands (Kepulauan Seribu) year-round.
Fin maps 46 sites in Thousand Islands (Kepulauan Seribu) (40 scuba diving sites and 11 snorkelling spots, with some suited to both).
The reefs support a wide range of observable species. Common Clownfish and Cardinalfish appear across most sites, while Indian Lionfish, Bluestreak Cleaner Wrasse and Eightband Butterflyfish are frequently encountered. Signature sightings include Harlequin Sweetlips and Bluespotted Fantail Ray, with the Varicose Wart Slug and Spanish Dancer adding interest for nudibranch enthusiasts.
Almost all sites require boat access, and the region has a large number of operators running trips from Jakarta. The one exception for shore entry is Pulau Putri, a shallow beginner-friendly reef and artificial reef site that can be entered directly from the island. Operators including Jakarta Ocean Dive, Javascuba Dive Center and Bubbles Dive Center are among those active in the area.
The region features natural coral reefs, artificial reef structures and wrecks, often combined at the same site. The Intan Wreck and Papatheo Shipwreck are dedicated wreck dives for intermediate divers, while sites like Tanjung Pramuka combine wreck, artificial reef and drop-off in a single dive. Many beginner sites feature sloping reef topography with both hard and soft corals.