Hawaii, United States
    Offshore Island, Pu'upehe

    First Cathedral

    Best months: Jul–Sep

    Protected Area

    Offshore Island, Pu'upehe

    Why dive here

    First Cathedral is a reef 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
    CharacterReef dive

    We’ve made the crossing from Maui to Lanai’s First Cathedral more times than we can count, and it never gets old. What makes it special isn’t just the cavern itself, though that’s certainly a draw, it’s the light. Sunlight streams through the cracks in the lava rock ceiling, illuminating the interior in a way that truly feels like stained glass. We love finding a perch inside and just watching the light shift and play, especially around midday for the best effect. Inside, look for the small “altar” rock formation and keep an eye out for slipper lobsters tucked into crevices. The outside walls of the cathedral are often patrolled by schools of yellow tang, and we’ve often spotted green sea turtles gliding by the entrance. It’s a pretty easy dive, maxing out at 20 meters, so it’s a good one for newer divers looking for a mellow cavern experience without strong currents. Just be aware it can get a bit busy with other charters, so try to go early if you can.

    Today06:2218:0811h 47m daylightGolden hour 17:39

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    Conditions

    Ocean conditions, forecast and tides for First Cathedral

    First Cathedral Ocean Conditions

    Monthly averages for First Cathedral, 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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