Blow Reef
Why dive here
With 58+ marine species recorded in the area - including blue sharks, blue whales, humpback whales, orcas and seals & sea lions - Blow Reef offers some of Alaska's richest wreck diving. Water ranges 5-15°C, warmest July, August, September.
Blow Reef in Alaska offers a stark contrast to tropical diving, with its cold, nutrient-rich waters supporting a different kind of beauty. Divers here will likely encounter various salmon species, Dungeness and slender crabs, and large spiral bryozoan colonies. It’s a site best suited for experienced cold-water divers keen on exploring a unique sub-arctic ecosystem and appreciating marine life adapted to chillier environments. We’d also keep an eye out for orcas passing through the area.
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.
Reviews for Blow Reef
Conditions
Ocean conditions, forecast and tides for Blow Reef
Blow Reef Ocean Conditions
Monthly averages for Blow Reef, 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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