April is a popular month to ask about Sandy Hook because conditions can shift week to week along this coast. Expect the water near 9.0°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 Atlantic Ocean.
Sandy Hook sea temperature in April — averages 9.0°C
The sea at Sandy Hook in United States averages 9.0°C during April, based on long-run climatology for the Atlantic Ocean. Use the live reading below for today's actual water and the monthly grid to compare with the rest of the year.
Average sea · April
9.0°C
cold · Poor
Live water now
…
Recommended wetsuit
5/4mm fullsuit + boots & gloves
At 9.0°C you need a 5/4mm fullsuit with boots, gloves and ideally a hood.
Monthly comparison
Cold — wetsuit recommended · Sandy Hook
Can you swim at Sandy Hook in June? — 19.0°C water19.0°CCan you swim at Sandy Hook in July? — 23.0°C water23.0°CCan you swim at Sandy Hook in August? — 23.0°C water23.0°CCan you swim at Sandy Hook in September? — 21.0°C water21.0°CCan you swim at Sandy Hook in October? — 17.0°C water17.0°CCan you swim at Sandy Hook in November? — 12.0°C water12.0°C
Frequently asked questions
What is the average sea temperature at Sandy Hook in April?
Sandy Hook averages 9.0°C in April, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Sandy Hook in April?
Not without thermal protection — a wetsuit is recommended at 9.0°C.
Do I need a wetsuit at Sandy Hook in April?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.