Pacific Northwest, United States

    Heddington Reef

    Best months: Sep–Jan

    Why dive here

    With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Heddington Reef offers some of Pacific Northwest's richest reef 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
    CharacterReef dive

    Heddington Reef, way up in the Pacific Northwest, is one of those places that reminds you why cold water diving is so special. Forget your typical colourful corals, this is a masterclass in green and gold. We love slipping into the cool embrace here, especially when the light filters down, making the kelp forest just glow. It’s not about huge pelagics or delicate reef fish; it’s about the sheer abundance and the resilience of life in these waters. Drifting through the swaying kelp, you’re almost guaranteed to spot Red Rock Crabs scuttling over the rocks, their shells a deep, vivid red against the muted greens. Keep an eye out for the Flashlight fish, sometimes called Plainfin Midshipman, tucked away in crevices, their bioluminescence a neat trick to catch at depth. While the salmon runs are seasonal, even outside of peak times, you’ll find plenty of Blue Seaperch and sometimes a curious Spotted Ratfish gliding past. The star ascidians here are particularly impressive, forming dense, almost alien colonies on the rock faces. This site really suits divers who appreciate a slower pace, who enjoy seeking out the small details and the unique textures of a temperate reef. It’s a photographer’s dream if you’re into macro and wide-angle without needing bright colours. Expect chilly water, usually around 8-12°C, so a drysuit is definitely our preferred gear.

    Safety Notes

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

    Today06:3517:4411h 8m daylightGolden hour 17:01

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    Conditions

    Ocean conditions, forecast and tides for Heddington Reef

    Heddington Reef Ocean Conditions

    Monthly averages for Heddington Reef, 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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