DivePlnr
    Cluster Reefs dive site
    Alaska, United States

    Cluster Reefs

    Good diving all year

    Why dive here

    With 58+ marine species recorded in the area - including blue sharks, blue whales, humpback whales, orcas and seals & sea lions - Cluster Reefs offers some of Alaska's richest diving. Water ranges 5-15°C, warmest July, August, September.

    Best timeYear-round
    WetsuitA drysuit
    Marine lifeBlue Sharks, Blue Whales, Humpback Whales, Orcas and Seals & Sea Lions · 58+ species recorded
    Water5-15°C · warmest July, August, September
    StandoutRich in charismatic marine life

    The Cluster Reefs in Alaska give you a genuine taste of cold-water diving, not just the usual tropical fare. Descending into these kelp forests, you’ll quickly notice the impressive size of some of the invertebrates; sunflower stars can be huge here, really putting on a show. We’ve had some cracking encounters with sidestriped and roughpatch shrimp picking their way across the rocks, and it's always a treat to spot a blackbelly eelpout tucked into a crevice. This is a dive for those who appreciate the subtle beauty of a robust ecosystem, ideal for photographers who enjoy macro subjects and a bit of a challenge.

    Safety Notes

    Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.

    Today05:4716:5011h 3m daylightGolden hour 16:05

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    Conditions

    Ocean conditions, forecast and tides for Cluster Reefs

    Cluster Reefs Ocean Conditions

    Monthly averages for Cluster Reefs, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (57, -135.4) (0km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    11°C

    51°F · Range: 8.5–12.8°C

    Air Temperature

    8°C

    47°F

    Wind Speed

    6.44 m/s

    12.5 knots

    Atmospheric Pressure

    1007.9 hPa

    Based on 4 years of monitoring data · Data sources: Open-Meteo marine data

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