Whidbey Island sits within Puget Sound in Washington State, and the cold, current-driven water defines every dive here. Temperatures remain cold year-round, making a drysuit or thick wetsuit essential at all times. The five sites in our database cover artificial reefs, a kelp forest wall, seagrass beds, and a wreck, with shore entries available at several locations including Keystone Jetty. Tidal currents are a constant consideration and divers plan around slack water for safe conditions. Marine life recorded at these sites includes Puget Sound king crabs, harbor seals, Steller sea lions, mosshead warbonnets, and a range of nudibranchs.
Monthly water temperature across Whidbey Island's sites, from satellite sea-surface data corrected for depth. The band shows the site-to-site spread.
Water temperature stays cold throughout the year with only a very narrow seasonal range, staying consistently low regardless of month. Visibility is influenced by plankton blooms and tends to deteriorate in summer, so autumn and winter are often preferred for clearer conditions. Tidal planning is essential at every site.
4 operators
Port Townsend, United States
Anacortes, United States
United States
United States
Water temperature around Whidbey Island ranges from about 8°C in January to 10°C in August, based on satellite sea-temperature data for its dive sites.
With water around 8–10°C, a drysuit works in Whidbey Island year-round.
Fin maps 5 sites in Whidbey Island (5 scuba diving sites and 1 snorkelling spots, with some suited to both).
2 more sites to explore
