Thornton State Beach Water Temperature
11.7°C / 53.0°F
The sea at Thornton State Beach feels cold so don't forget to pack your wetsuit!
Average Sea Temp for Thornton State Beach
The chart and table below are the sea temperature averages for Thornton State Beach calculated from over twenty years of oceanographic data. As above the water temperatures given are for sea surface temperature (SST) which is most relevant to recreational users.