Beach
Talat Bouazza Sahel
Arbaa Sahel, Morocco · sea 20.6 °C at its warmest, in September

Sea temperature month by month
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020, sampled 19 km offshore, at the nearest open water cell of a 0.25° grid.
About
Beach in Morocco
Wikipedia has no article about this beach yet. It is on the atlas from its Wikidata record and its photograph.
Questions
How warm is the sea at Talat Bouazza Sahel?
The sea off Talat Bouazza Sahel averages 20.6 °C at its warmest, in September, and 17.1 °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 Talat Bouazza Sahel?
The sea reaches 20 °C or more from August to October. Twenty degrees is where most swimmers stop calling water cold; below it, a wetsuit helps.
Where is Talat Bouazza Sahel?
Talat Bouazza Sahel is on the coast of Arbaa Sahel, Morocco, at 29.7060, -9.9513. The map on this site flies straight to it.