Can you swim at Island Beach State Park in January? — 5.0°C water
Cold — wetsuit recommended
Average sea · January
5.0°C
Live water now
…
Recommended wetsuit
6/5/4mm hooded fullsuit or drysuit
cold
Cold. 5.0°C in January is cold-water swimming territory — a 4/3 mm full wetsuit, neoprene cap and short, repeated sessions are the safe approach.
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 Island Beach State Park live page for full conditions.
Best months to swim
July · August
Frequently asked questions
What is the average sea temperature at Island Beach State Park in January?
Island Beach State Park averages 5.0°C in January, based on long-run climatology for the Atlantic Ocean.
Is the sea warm enough to swim at Island Beach State Park in January?
Not without thermal protection — a wetsuit is recommended at 5.0°C.
Do I need a wetsuit at Island Beach State Park in January?
A 4/3 mm full wetsuit, boots and neoprene cap are recommended.
