Can I swim at Island Beach State Park right now?

The sea at Island Beach State Park is currently 21.5°C — good swimming conditions. Most swimmers will find the water comfortable when it's above 22°C; below 18°C feels fresh and a wetsuit is recommended.

What will the sea temperature be at Island Beach State Park next week?

Based on long-term July averages and the latest marine model, expect the sea around Island Beach State Park to sit close to 23.0°C over the next 7 days. Check the live 7-day chart above for the exact daily outlook.

When is the best month to swim at Island Beach State Park?

July – August – September are typically the warmest months to swim at Island Beach State Park, with sea temperatures at their seasonal peak.

Do I need a wetsuit at Island Beach State Park?

With water currently at 21.5°C: above 22°C no wetsuit needed; 18–22°C a shorty is comfortable for long swims; 14–18°C a 3/2mm full suit; below 14°C a 4/3mm or thicker.

United States

New Jersey · Atlantic Ocean

Island Beach State Park

Wild long Jersey-Shore beach.

Pleasant water with a light chop and a strong wind — good swimming conditions.

View on map OpenStreetMap Directions

Sea temperature now

21.5°Cwarm

Good

Updated just now · Source: Open-Meteo Marine

Air temperature

24.0°C

Wave height

0.6 m

Wind

29.4 km/h

UV index

0.0 UV index

Location

Island Beach State Park on the map, with nearby beaches and live sea temperatures.

7-day forecast

Water, air, waves, wind and UV outlook for the week ahead.

Wetsuit recommendation

Shorty 2mm

At 21.5°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.

Surf & watersports

Pleasant but not warm. A short-arm short-leg ("shorty") wetsuit traps body heat through the core while leaving arms and legs free. Open-water swimmers training for 30–60 minutes can usually go without; longer sessions benefit from a thin swim wetsuit.

Open-water swimming

Most swimmers fine to 60 minutes without; consider a 2mm swim suit beyond.

Recommendation tuned for Island Beach State Park's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.

Quick answer

Can I swim at Island Beach State Park today?

The sea is currently 21.5°C — good swimming conditions. Most swimmers will find it pleasant.

Key takeaways

• Located in New Jersey, United States (Atlantic Ocean).
• Family friendly with calm, accessible water.
• Live data refreshed hourly from Open-Meteo Marine.

Monthly sea temperature averages

Tap any month to see what to expect — based on regional climatology.

Jan5°C Feb4°C Mar5°C Apr9°C May14°C Jun19°C Jul23°CBest Aug23°CBest Sep21°C Oct17°C Nov12°C Dec8°C

4°C → 23°C· Current month outlined· “Best” = within 2°C of the annual peak

Year-round sea temperature

Best swim months: Jul – Aug – Sep

Month	Sea	Comfort
Jan	5°C	Cold
Feb	4°C	Cold
Mar	5°C	Cold
Apr	9°C	Cold
May	14°C	Bracing
Jun	19°C	Pleasant
Jul ⭐	23°C	Warm
Aug	23°C	Warm
Sep	21°C	Pleasant
Oct	17°C	Bracing
Nov	12°C	Cold
Dec	8°C	Cold

Can you swim here? — Island Beach State Park