May is a popular month to ask about Nirai Beach because conditions can shift week to week along this coast. Expect the water near 23,0°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 East China Sea.
Nirai Beach sea temperature in May — averages 23,0°C
The sea at Nirai Beach in Japan averages 23,0°C during May, based on long-run climatology for the East China Sea. 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
23,0°C
warm · Excellent
Live water now
…
Recommended wetsuit
Rash vest or swimsuit
At 23.0°C most swimmers and surfers are comfortable in a swimsuit or thin rash top.
Monthly comparison
Yes — comfortable for most swimmers · Nirai Beach
Can you swim at Nirai Beach in July? — 28,0°C water28,0°CCan you swim at Nirai Beach in August? — 28,0°C water28,0°CCan you swim at Nirai Beach in September? — 27,0°C water27,0°CCan you swim at Nirai Beach in October? — 24,0°C water24,0°CCan you swim at Nirai Beach in November? — 21,0°C water21,0°CCan you swim at Nirai Beach in December? — 19,0°C water19,0°C
Frequently asked questions
What is the average sea temperature at Nirai Beach in May?
Nirai Beach averages 23,0°C in May, based on long-run climatology for the East China Sea.
Is the sea warm enough to swim at Nirai Beach in May?
Yes, most swimmers find 23,0°C comfortable for unrestricted swimming.
Do I need a wetsuit at Nirai Beach in May?
Most swimmers don't need a wetsuit; a rash vest helps for longer sessions.