Hawaii, United States
    Offshore Island

    Olowalu Reef

    Best months: Jul–Sep

    Protected Area

    Offshore Island

    Why dive here

    Olowalu Reef is a cave dive where divers can encounter blue sharks, sea turtles and sperm whales. Water ranges 25-28°C, warmest August, September, October.

    Best timeJul–Sep
    WetsuitA 3mm shorty or thin full wetsuit
    Marine lifeBlue Sharks, Sea Turtles and Sperm Whales
    Water25-28°C · warmest August, September, October
    CharacterCave dive
    StandoutDramatic cave topography

    Olowalu. Mile Marker 14. We’ve probably parked here a dozen times, gearing up next to the road. It’s got one of the easiest shore entries on Maui, just a quick wade in. What we love about Olowalu is the scale of the coral; it's a massive, ancient reef that stretches out into these incredible canyons. You can spend a whole hour just finning through those formations, spotting arc-eye hawkfish perched on stony corals. Visibility here averages 14 metres, and it’s a pretty shallow dive, maxing out at 9m. We usually see a handful of green sea turtles – it’s definitely one of their preferred hangouts. Look closely for snakehead cowries tucked into crevices. While it’s not a drift dive, there can be a gentle push sometimes, so keep an eye on your bearings as you navigate the coral maze. It’s a site that really suits new divers or anyone who just wants a relaxed, beautiful shallow dive without much fuss.

    Safety Notes

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

    Today06:2118:0711h 47m daylightGolden hour 17:38

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    Conditions

    Ocean conditions, forecast and tides for Olowalu Reef

    Olowalu Reef Ocean Conditions

    Monthly averages for Olowalu Reef, sourced from Open-Meteo marine data + Copernicus Marine (EU) - nearest station: Open-Meteo marine grid (20.73, -156.95) (9km away)

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    October Averages

    Sea Temperature

    27°C

    81°F · Range: 26.7–28.4°C

    Current Speed

    11.31 cm/s

    Direction: NW (315°)

    Chlorophyll-a

    0.035 mg/m³

    Very clear (oligotrophic)

    Salinity

    35.58 PSU

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

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