Can you swim at Nai Harn Beach in May? — 18.0°C water
Yes, but expect a fresh dip
Average sea · May
18.0°C
Live water now
…
Recommended wetsuit
3/2mm fullsuit
mild
It depends. Nai Harn Beach sits around 18.0°C in May; confident swimmers will be fine, casual bathers may prefer short sessions.
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 Nai Harn Beach live page for full conditions.
Best months to swim
June · July · August · September
Frequently asked questions
What is the average sea temperature at Nai Harn Beach in May?
Nai Harn Beach averages 18.0°C in May, based on long-run climatology for the Andaman Sea.
Is the sea warm enough to swim at Nai Harn Beach in May?
It is swimmable but fresh; confident swimmers will be fine without a wetsuit.
Do I need a wetsuit at Nai Harn Beach in May?
A 2 mm shorty is comfortable for sessions over 30 minutes.
