About Thunderbird Marina
Thunderbird Marina has been in the same location on Lake Union since the 1920’s. Thunderbird Marina, with its Lake Union location and easy access to major highways, the Ballard Locks and Lake Washington, has been a prime location for boaters for nearly a century. This means the Marina was in operation when Gas Works Park, was a gasification plant. The Marina predates the Space Needle by 40 years! Over the decades the Marina has seen growth and continual improvements such as, new docks, new electrical, grated decking, dock boxes, covered moorage, secure access, and video monitoring.*No Liveaboards, charters, houseboats or Airbnb

Facilities
COORDINATES
47.64834 N, -122.32594 E
Port Information
Telephone
Berth Sizes
< 10m, 10-20m
Manoeuvrability
Good
Channel Marking
Excellent
Port of Entry
No
Overseas Visitor Berths
No
Dock Type
Floating
Style Side To
Yes
Tidal Flow
Negligible
Active Winter
Yes
Weather Forecast
Thu
5PM - 9PM
26 February 2026
- SW 8–13 knots. Gusts up to 23 knots.
- 7°C
- SW 0.5m at 2s period
- Mostly fine
Thu
9PM - 5AM
26 February 2026
- S 7–11 knots. Gusts up to 17 knots.
- 6°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy
Fri
5AM - 9AM
27 February 2026
- S 7–10 knots.
- 6°C
- Calm sea
- UV Index: 0 - Low
- Partly cloudy