Can you swim at Mertasari Beach in October? — 21.0°C water
Yes — comfortable for most swimmers
Average sea · October
21.0°C
Live water now
…
Recommended wetsuit
Shorty 2mm
warm
Yes. With a 21.0°C average in October, most swimmers find Mertasari Beach 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 Mertasari Beach live page for full conditions.
Best months to swim
June · July · August · September
Frequently asked questions
What is the average sea temperature at Mertasari Beach in October?
Mertasari Beach averages 21.0°C in October, based on long-run climatology for the Bali Sea.
Is the sea warm enough to swim at Mertasari Beach in October?
Yes, most swimmers find 21.0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Mertasari Beach in October?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.
