Beach
Mar de Cristal
Cartagena, Spain · sea 25.9 °C at its warmest, in August

Sea temperature month by month
15Jan
14.4Feb
14.8Mar
16Apr
18.3May
21.5Jun
24.4Jul
25.9Aug
24.5Sep
21.8Oct
18.9Nov
16.3Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
Mar de Cristal es una localidad española perteneciente al término municipal de Cartagena, comunidad autónoma de la Región de Murcia.
Questions
How warm is the sea at Mar de Cristal?
The sea off Mar de Cristal averages 25.9 °C at its warmest, in August, and 14.4 °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 Mar de Cristal?
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 Mar de Cristal?
Mar de Cristal is on the coast of Cartagena, Spain, at 37.6408, -0.7611. The map on this site flies straight to it.