Kogangas Rock
Why dive here
With 58+ marine species recorded in the area - including blue sharks, blue whales, humpback whales, orcas and seals & sea lions - Kogangas Rock offers some of Alaska's richest pinnacle diving. Water ranges 5-15°C, warmest July, August, September.
Kogangas Rock isn't for the faint of heart, or for those who skimp on drysuit insulation. This is Alaska diving, raw and exhilarating. We love the sheer drama of the place, where kelp forests sway in the currents like ancient trees, and the rock itself plunges into the gloom. Visibility can be hit or miss, but on a good day, when the sun penetrates the surface, it’s a genuinely spectacular sight. You’ll encounter a very different cast of characters here compared to warmer climes. Giant octopuses are the real stars, often found tucked into rocky crevices, their intelligent eyes watching you. We’ve also had incredible encounters with playful sea lions zipping through the kelp. Keep an eye out for the vibrant red soft corals contrasting against the dark rock, and the odd Spotted Ratfish gliding past. This site is definitely best suited for experienced cold-water divers who appreciate the wild side of diving and don't mind a bit of a current.
Typical Kogangas Rock 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.
Reviews for Kogangas Rock
Conditions
Ocean conditions, forecast and tides for Kogangas Rock
Kogangas Rock Ocean Conditions
Monthly averages for Kogangas Rock, sourced from Open-Meteo marine data - nearest station: Open-Meteo marine grid (57, -135.4) (0km away)
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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