Beach
Tsujidō Beach
Tsujidō Nishikaigan, Japan · sea 26 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 22 km offshore, at the nearest open water cell of a 0.25° grid.
About
辻堂海岸(つじどうかいがん)は、神奈川県藤沢市辻堂地区の相模湾に面した砂浜。湘南海岸の一部を構成し、海水浴場(辻堂海水浴場)がある。
Questions
How warm is the sea at Tsujidō Beach?
The sea off Tsujidō Beach averages 26 °C at its warmest, in August, and 15.3 °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 Tsujidō Beach?
The sea reaches 20 °C or more from June to November. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Tsujidō Beach?
Tsujidō Beach is on the coast of Tsujidō Nishikaigan, Japan, at 35.3193, 139.4438. The map on this site flies straight to it.