Beach
Alki Beach Park
Seattle, United States · sea 11.9 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 70 km offshore, at the nearest open water cell of a 0.25° grid.
About
Alki Beach Park is a 135.9-acre (55.0 ha) park located in the West Seattle neighborhood of Seattle, Washington that consists of the Elliott Bay beach between Alki Point and Duwamish Head.
Questions
How warm is the sea at Alki Beach Park?
The sea off Alki Beach Park averages 11.9 °C at its warmest, in August, and 7.9 °C at its coolest. These are monthly means from NOAA's OISST v2.1 satellite and buoy record for 1991 to 2020, sampled at the beach's own coordinates.
When can you swim at Alki Beach Park?
The sea here never averages 20 °C in any month, so swimming means cold water all year. Some people do it anyway.
Where is Alki Beach Park?
Alki Beach Park is on the coast of Seattle, United States, at 47.5810, -122.4067. The map on this site flies straight to it.
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