Jimmy Judd Reef
Why dive here
With 35+ marine species recorded in the area - including humpback whales, orcas and seals & sea lions - Jimmy Judd Reef offers some of Pacific Northwest's richest reef diving. Water ranges 7-17°C, warmest July, August, September.
Jimmy Judd Reef, out here in the Pacific Northwest, is a solid dive, especially if you’re into the colder water ecosystems. We’ve found it’s usually a reliable spot for spotting some of the region’s iconic residents. Think big sunflower stars clinging to the rocks and the occasional spotted ratfish ghosting past. If you time it right, particularly during late summer or early fall, you might even catch the tail end of a salmon run – pink and coho salmon pushing through, a real spectacle. It’s a good one for those who appreciate the unique beauty of temperate reefs, no crazy currents, just good solid diving.
Typical Jimmy Judd 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 Jimmy Judd Reef
Jimmy Judd Reef Ocean Conditions
Monthly averages for Jimmy Judd 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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