Haswell Reef
Why dive here
With 58+ marine species recorded in the area - including blue sharks, blue whales, humpback whales, orcas and seals & sea lions - Haswell Reef offers some of Alaska's richest reef diving. Water ranges 5-15°C, warmest July, August, September.
Diving Haswell Reef isn't your typical tropical drift, but it offers a genuinely wild Alaskan experience. We’ve seen healthy bull kelp forests here, swaying with the currents, providing cover for a surprising number of critters. Keep an eye out for colorful nudibranchs clinging to the fronds and the occasional wolf eel peeking from a crevice. It’s a spot best suited for divers who appreciate temperate water ecosystems and the quiet thrill of discovering life in unexpected places. You might even spot a harbor seal zipping by, curious about your bubbles.
Safety Notes
Cold water this month (avg 11°C). Drysuit or thick wetsuit (7mm+) recommended.
Reviews for Haswell Reef
Conditions
Ocean conditions, forecast and tides for Haswell Reef
Haswell Reef Ocean Conditions
Monthly averages for Haswell 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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