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Thornton State Beach

San Mateo County, United States · sea 14.6 °C at its warmest, in September

Thornton State Beach

Photo: Juliusz Gonera · CC BY-SA 3.0, via Wikimedia Commons

Sea temperature month by month

11.9Jan
12Feb
12.1Mar
11.6Apr
11.8May
12.4Jun
13.6Jul
14.4Aug
14.6Sep
13.9Oct
13.1Nov
12.2Dec

Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 13 km offshore — the nearest open-water cell in a 0.25° grid.

About

Thornton State Beach is a protected beach in the state park system of California, United States. It is located on the Pacific coast of Daly City in the San Francisco Bay Area.

Beaches nearby

Questions

How warm is the sea at Thornton State Beach?

The sea off Thornton State Beach averages 14.6 °C at its warmest, in September, and 11.6 °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 Thornton State Beach?

The sea here never averages 20 °C in any month, so swimming means cold water all year. Some people do it anyway.

Where is Thornton State Beach?

Thornton State Beach is on the coast of San Mateo County, United States, at 37.6833, -122.5000. The globe on this site flies straight to it.

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