Mouat Reef
Protected Area
Lime Kiln Lighthouse Voluntary No-take
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Mouat Reef offers some of Pacific Northwest's richest reef diving. Water ranges 7-17°C, warmest July, August, September.
Mouat Reef is exactly what we picture when someone says "Pacific Northwest diving" – a real kelp forest adventure. We love dropping in here, particularly on a sunny afternoon when the light filters down through the canopy. The sheer volume of shiner perch is always astounding, a shimmering curtain that sometimes feels so thick you could swim right into it. Keep an eye out for blackbelly eelpouts tucked into the crevices; they're masters of camouflage, but rewarding to spot. What makes Mouat special isn't just the resident critters, but the seasonal visitors too. Watching pink salmon push through the kelp in late summer, with spiny dogfish cruising alongside them, is an unforgettable show. We've even been lucky enough to see common seals darting through the fronds, sometimes seemingly just playing in the currents. It’s a site that rewards repeat visits, always something new happening.
Typical Mouat Reef Dive Profile
Illustrative profile based on site depth and type. Actual dive profiles vary - always follow your dive computer and training.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
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Conditions
Ocean conditions, forecast and tides for Mouat Reef
Mouat Reef Ocean Conditions
Monthly averages for Mouat Reef, sourced from NOAA NDBC + Copernicus Marine (EU) - nearest station: 9449880 - Friday Harbor, WA (27km away)
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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