Current water temperature in Cornwall is 12 degrees celsius which is 19th warmest location in Great Britain. The warmest water in Great Britain is in Isle of Portland where sea surface has 8 °C. This means water is -4 degrees colder than in Isle of Portland.
Among 435 towns in continent Europe, Cornwall has 189th warmest water. The warmest in continent is Rovinj (Croatia) with 27 degrees celsius.
65 percentage of locations in the world has higher temperature at the moment.
In the last month highest measured temperature in Cornwall was 15 °C and the lowest temperature was 14 °C. Average temperature in the last month was 14.7 °C.
In longer period of time the highest measured temperature was 20 °C and the lowest measured temperature was 9 °C.
Below is a code you can use to include sea temperature on your blog or website.