February is a popular month to ask about Fire Island because conditions can shift week to week along this coast. Expect the water near 3.0°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.
Fire Island sea temperature in February — averages 3.0°C
The sea at Fire Island in United States averages 3.0°C during February, 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 · February
3.0°C
cold · Poor
Live water now
…
Recommended wetsuit
6/5/4mm hooded fullsuit or drysuit
At 3.0°C only experienced cold-water athletes should enter — full thermal protection required.
Monthly comparison
Cold — wetsuit recommended · Fire Island
Can you swim at Fire Island in June? — 18.0°C water18.0°CCan you swim at Fire Island in July? — 22.0°C water22.0°CCan you swim at Fire Island in August? — 23.0°C water23.0°CCan you swim at Fire Island in September? — 20.0°C water20.0°CCan you swim at Fire Island in October? — 16.0°C water16.0°CCan you swim at Fire Island in November? — 11.0°C water11.0°C
Frequently asked questions
What is the average sea temperature at Fire Island in February?
Fire Island averages 3.0°C in February, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Fire Island in February?
Not without thermal protection — a wetsuit is recommended at 3.0°C.
Do I need a wetsuit at Fire Island in February?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.