About Harbor Island Marina
: 1001 SW Klickitat Way, Seattle, WA 98134, United States West Seattle’s best moorage is just minutes away from saltwater and Elliott Bay. Harbor Island Marina located south of downtown Seattle on the Duwamish River, is convenient to West Seattle neighborhoods and the South Sound. The marina provides permanent monthly moorage for 77 vessels ranging from 26 to 70 feet (7.9 to 21.3 meters). Marina Amenities 4-Star EnviroStar Certified Clean Marina Liveaboard moorage - call for availability Monthly moorage with easy access to Elliot Bay and Puget Sound Free parking Restroom and showers Water and metered power Self service pumpout and port-o-potty station
Facilities
Electricity
Water
Showers
Sewage
Toilets
Recycling
FoodCOORDINATES
47.56871 N, -122.34797 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m, 20m+
Depth at MLW
2 - 3m
Manoeuvrability
Good
Channel Marking
Excellent
Port of Entry
No
Overseas Visitor Berths
Yes
Catamaran Berths
Yes
Dock Type
Floating
Style Side To
Yes
Style Stern To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Thu
5AM - 9AM
14 May 2026
S 7–10 knots. Gusts up to 18 knots.
9 to 12°C
Sunny
Thu
9AM - 1PM
14 May 2026
- SW 8 knots increasing to 11 knots. Gusts up to 18 knots.
- Increasing from 12 to 16°C
Calm sea
UV Index: 4 - Moderate- Partly cloudy
Thu
1PM - 5PM
14 May 2026
- SW 10–13 knots. Gusts up to 21 knots.
- 14 to 16°C
- Calm sea
- UV Index: 4 - Moderate
- Cloudy