Can you swim at Blue Lagoon in December? — 20.0°C water
Yes — comfortable for most swimmers
Average sea · December
20.0°C
Live water now
…
Recommended wetsuit
Shorty 2mm
warm
Yes. With a 20.0°C average in December, most swimmers find Blue Lagoon comfortable after the first 10–20 seconds of acclimatisation.
Monthly averages set expectations, but the specific beach today depends on wind, swell and recent weather. Check the live value at the top of this page or open the Blue Lagoon live page for full conditions.
Best months to swim
June · July · August · September · October · November
Frequently asked questions
What is the average sea temperature at Blue Lagoon in December?
Blue Lagoon averages 20.0°C in December, based on long-run climatology for the Mediterranean Sea.
Is the sea warm enough to swim at Blue Lagoon in December?
Yes, most swimmers find 20.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Blue Lagoon in December?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
