10-25m
    Pacific Northwest, United States

    Porteau Cove Diving Area

    Best months: Sep–Jan

    Why dive here

    With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Porteau Cove Diving Area offers some of Pacific Northwest's richest wreck diving. Water ranges 7-17°C, warmest July, August, September.

    Best timeSep–Jan
    WetsuitA drysuit
    Marine lifeHumpback Whales, Orcas and Seals & Sea Lions · 35+ species recorded
    Water7-17°C · warmest July, August, September
    CharacterWreck dive · max 10-25m

    Porteau Cove is a staple for a reason. We’ve logged countless dives here, and it rarely disappoints, especially for those who appreciate the chill, green embrace of the Pacific Northwest. Forget the sunshine and palm trees, this is about exploring purpose-sunk vessels turned into vibrant ecosystems. Our favourite part has to be the trio of wrecks: the Granthall, the Nakaya, and the Shearwater. The Granthall is particularly fun, broken up into sections and easy to navigate even for less experienced wreck divers. You can fin through open compartments, spot schools of shiner perch darting between the beams, and poke around for a Dungeness crab hiding in the crevices. We’ve often found lazy common seals cruising past, sometimes even stopping to eye us curiously. Visibility can be a bit of a gamble, often ranging from 5 to 15 meters, but even on murkier days, the wrecks still have a wonderfully eerie presence. We always suggest hitting the water on an incoming tide for the best conditions and fewer particulates. Keep an eye out for the colourful sunflower stars draped over the railings and the subtle camouflaged forms of squat lobsters clinging to the metal. It’s a great site for divers who love a bit of history with their marine life, and it’s always fascinating to see how these artificial structures become homes.

    Typical Porteau Cove Diving Area Dive Profile

    5m10mSafety Stop0m10m max~60 min estimated bottom time

    Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.

    Safety Notes

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

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

    Today06:2717:3411h 7m daylightGolden hour 16:51

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    Conditions

    Ocean conditions, forecast and tides for Porteau Cove Diving Area

    Porteau Cove Diving Area Ocean Conditions

    Monthly averages for Porteau Cove Diving Area, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 9449880 - Friday Harbor, WA (27km away)

    ExcellentGreatGoodFairPoor★Best monthsThis month

    October Averages

    Sea Temperature

    11°C

    53°F · Range: 9.6–11.4°C

    Air Temperature

    11°C

    51°F

    Current Speed

    3.16 cm/s

    Direction: E (108.4°)

    Salinity

    23.61 PSU

    Wind Speed

    1.8 m/s

    3.5 knots

    Atmospheric Pressure

    1018.3 hPa

    Based on 5 years of monitoring data · Data sources: NOAA NDBC + Copernicus Marine (EU)

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