May is a popular month to ask about Lamai Beach because conditions can shift week to week along this coast. Expect the water near 30,0°C, with daily variation from wind, tides and recent storms. We refresh the live value from Open-Meteo Marine every hour, so the headline above always reflects the current state of the Gulf of Thailand.
Lamai Beach sea temperature in May — averages 30,0°C
The sea at Lamai Beach in Thailand averages 30,0°C during May, based on long-run climatology for the Gulf of Thailand. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · May
30,0°C
tropical · Excellent
Live water now
…
Recommended wetsuit
No wetsuit
At 30.0°C the water is warm enough to swim and surf in just a swimsuit or boardshorts.
Monthly comparison
Yes — ideal swimming weather · Lamai Beach
Can you swim at Lamai Beach in July? — 29,0°C water29,0°CCan you swim at Lamai Beach in August? — 29,0°C water29,0°CCan you swim at Lamai Beach in September? — 29,0°C water29,0°CCan you swim at Lamai Beach in October? — 29,0°C water29,0°CCan you swim at Lamai Beach in November? — 28,0°C water28,0°CCan you swim at Lamai Beach in December? — 27,0°C water27,0°C
Frequently asked questions
What is the average sea temperature at Lamai Beach in May?
Lamai Beach averages 30,0°C in May, based on long-run climatology for the Gulf of Thailand.
Is the sea warm enough to swim at Lamai Beach in May?
Yes, most swimmers find 30,0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Lamai Beach in May?
No wetsuit needed.