Bali, Indonesia
    Bali Barat

    Octagon Reef

    Good diving all year

    Protected Area

    Bali Barat

    Why dive here

    With 515+ marine species recorded in the area - including barracuda, blue-spotted stingrays, bull sharks, giant moray eels and manta rays - Octagon Reef offers some of Bali's richest wreck diving. Water ranges 29-31°C, warmest April, May, November.

    Best timeYear-round
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBarracuda, Blue-Spotted Stingrays, Bull Sharks, Giant Moray Eels and Manta Rays · 515+ species recorded
    Water29-31°C · warmest April, May, November
    CharacterWreck dive
    StandoutExceptional marine biodiversity

    Octagon Reef, just a quick hop from Naya Gawana, makes for a really solid, easy dive. We love that it’s usually a relaxed drift along the wall, which gently slopes from about 5 metres down to 20. The current here tends to be light to medium, just enough to carry you along without much effort, making it ideal for a leisurely look. The wall itself is a tapestry of table corals and various staghorn species, and you'll spot plenty of damselfish and triggerfish darting in and out. Keep an eye out for broadband flatheads tucked into the sand patches at the base. We’ve had some good luck with banded sea kraits here, too, usually cruising along the reef edge. Visibility hovers around 16 metres on an average day, giving you a clear view of the reef's contours and the occasional eagle ray gliding past in the blue. It’s a site that rewards a slow pace, letting you soak in the details rather than chasing big pelagics.

    Safety Notes

    Wreck site - avoid penetration without wreck diving certification. Watch for sharp metal and entanglement hazards.

    Today06:0218:1712h 15m daylightGolden hour 17:49

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    Conditions

    Ocean conditions, forecast and tides for Octagon Reef

    Octagon Reef Ocean Conditions

    Monthly averages for Octagon Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-7.5, 113.18) (20km away)

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    October Averages

    Sea Temperature

    30°C

    86°F · Range: 28.3–31.6°C

    Current Speed

    4 cm/s

    Direction: E (90°)

    Salinity

    32.94 PSU

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data + Copernicus Marine (EU)

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