Beach
Glan Don Beach
Pwllheli, United Kingdom · sea 16.6 °C at its warmest, in August

Sea temperature month by month
8.3Jan
7.6Feb
7.7Mar
9.2Apr
11.4May
13.9Jun
15.7Jul
16.6Aug
16Sep
14.1Oct
11.8Nov
9.8Dec
Monthly means in °C, NOAA OISST v2.1 climatology 1991–2020.
About
beach at Pwllheli, Gwynedd, Wales
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 Glan Don Beach?
The sea off Glan Don Beach averages 16.6 °C at its warmest, in August, and 7.6 °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 Glan Don Beach?
The sea here never averages 20 °C in any month, so swimming means cold water all year. Some people do it anyway.
Where is Glan Don Beach?
Glan Don Beach is on the coast of Pwllheli, United Kingdom, at 52.8881, -4.4033. The map on this site flies straight to it.