Lombok & Gili Islands, Indonesia
    KK Nusa Penida

    Gamat Bay

    Best months: Jan–Feb

    Protected Area

    KK Nusa Penida

    Why dive here

    With 246+ marine species recorded in the area - including blue-spotted stingrays, bull sharks, grey reef sharks, manta rays and mobula rays (devil rays) - Gamat Bay offers some of Lombok & Gili Islands's richest cave diving. Water ranges 28-30°C, warmest April, May, November.

    Best timeJan–Feb
    WetsuitNo wetsuit needed, or a rash guard
    Marine lifeBlue-Spotted Stingrays, Bull Sharks, Grey Reef Sharks, Manta Rays and Mobula Rays (Devil Rays) · 246+ species recorded
    Water28-30°C · warmest April, May, November
    CharacterCave dive
    StandoutExceptional marine biodiversity

    Gamat Bay is one of those spots we always try to squeeze in, especially if we’re over on Nusa Penida for a few days. It's a small, protected bay, which often means an easier start before you drift out onto the slope. The real draw here is the sheer density of coral, particularly those sprawling staghorn formations in the shallows. You could spend half your dive just poking around the nooks and crannies there. As you head deeper, the slope drops away pretty dramatically to around 23m before disappearing into the blue. We've often seen whitetip reef sharks cruising the edge where the light starts to fade, and if you’re lucky, a marble ray might glide by. Keep an eye out for the smaller stuff too, like the freckled anglerfish we spotted once, perfectly camouflaged on a sponge, or the electric flash of a blue ribbon eel. For sunfish seekers, July to October is your window. The currents can pick up here, pulling you around the corner towards Toyapakeh, so it’s best for divers comfortable with a drift.

    Safety Notes

    Overhead environment - never enter without proper cave/cavern training, redundant equipment, and a guideline.

    Today05:5818:1312h 15m daylightGolden hour 17:45

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    Conditions

    Ocean conditions, forecast and tides for Gamat Bay

    Gamat Bay Ocean Conditions

    Monthly averages for Gamat Bay, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (-8.35, 116.05) (0km away)

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    October Averages

    Sea Temperature

    30°C

    85°F · Range: 28.3–30.9°C

    Current Speed

    29.15 cm/s

    Direction: SW (239°)

    Chlorophyll-a

    0.223 mg/m³

    Clear water

    Salinity

    33.97 PSU

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

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