Beach
Platja de la Marineta Cassiana
Dénia, Spain · sea 26 °C at its warmest, in August

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
La playa de la Marineta Casiana (Plaja de la Marineta Cassiana en valenciano) es una playa de arena del municipio de Denia en la provincia de Alicante (España).
Questions
How warm is the sea at Platja de la Marineta Cassiana?
The sea off Platja de la Marineta Cassiana averages 26 °C at its warmest, in August, and 13.8 °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 Platja de la Marineta Cassiana?
The sea reaches 20 °C or more from June to October. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Platja de la Marineta Cassiana?
Platja de la Marineta Cassiana is on the coast of Dénia, Spain, at 38.8330, 0.1257. The map on this site flies straight to it.