Bunaken and Siladen Islands are defined by vertical walls. The majority of sites drop sharply from shallow reef crests into deep water, and strong currents make drift diving the dominant style. Boat access is standard across the area. The species list is broad, with Napoleon Wrasse, Regal Angelfish, multiple nudibranch species and several lionfish and moray encounters recorded consistently. Sites range from beginner-friendly walls like Negri and Panggulingan to demanding drift and drop-off sites such as Tanjung Kopi and Raymond's Point.
Monthly water temperature across Bunaken & Siladen Islands's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature stays warm throughout the year, with little variation between the coolest and warmest months. The best-months data points clearly to April through October as the peak window, when conditions are most favourable for wall and drift diving. Outside this period, visitor numbers thin and some sites may carry less predictable currents.
18 operators
18 more sites to explore
Water temperature around Bunaken & Siladen Islands ranges from about 28°C in February to 30°C in December, based on satellite sea-temperature data for its dive sites.
With water around 28–30°C, a rash guard or 3mm shorty works in Bunaken & Siladen Islands year-round.
Fin maps 30 sites in Bunaken & Siladen Islands (30 scuba diving sites and 5 snorkelling spots, with some suited to both).
Observation-backed sightings include Napoleon Wrasse, Regal Angelfish, Bluegirdled Angelfish and Moorish Idol on the reef faces. Nudibranch encounters are frequent, with Anna's Chromodoris, Chromodoris Alcalai, Loch's Chromodoris and Willan's Chromodoris all recorded consistently. Yellow-edged Moray and Giant Moray are regularly seen in wall crevices, and Leaf Scorpionfish and Spotfin Lionfish appear across a wide range of sites.
Several sites are rated for beginners, including Labasong, Negri, Panggulingan, Cela-Cela and Dalton Point. These offer wall and reef topography at manageable depths with generally mild to moderate currents. However, many of the most celebrated sites here are intermediate or advanced, with strong drift conditions and deep drop-offs, so beginners should discuss site selection with their operator before heading out.
Almost all sites require boat access, which is the standard arrangement across the island group. Operators such as Bunaken Oasis Dive Resort and Spa, Living Colours Diving Resort, Lumbalumba Resort and Bastianos Bunaken Dive Resort are among those running regular dive trips from the islands. Cela-Cela is a notable exception, with both shore and boat entry available.
The wall and drift combination is the defining character throughout, but individual sites offer meaningful variation. Raymond's Point adds cave structures to its wall topography, while Dalton Point mixes reef, wall and muck diving. Tanjung Parigi features a pinnacle alongside the reef wall, and Alung Banua combines wall, reef and cave in a shallower profile. Divers looking for the deepest drop-offs should note Tanjung Kopi and Lekuan II, which descend well beyond the range of most other sites.
