Can I swim at Robert Moses Beach right now?

The sea at Robert Moses Beach is currently 20.1°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 Robert Moses Beach next week?

Based on long-term July averages and the latest marine model, expect the sea around Robert Moses Beach to sit close to 22.0°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 Robert Moses Beach?

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

Do I need a wetsuit at Robert Moses Beach?

With water currently at 20.1°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 York · Atlantic Ocean

Robert Moses Beach

State-park Long-Island family beach.

Mild water with a moderate swell and a moderate breeze — good swimming conditions.

View on map OpenStreetMap Directions

Sea temperature now

20.1°Cwarm

Fair

Updated just now · Source: Open-Meteo Marine

Air temperature

25.1°C

Wave height

1.2 m

Wind

24.2 km/h

UV index

0.0 UV index

Location

Robert Moses Beach 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 20.1°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 Robert Moses Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.

Quick answer

Can I swim at Robert Moses Beach today?

The sea is currently 20.1°C — fair swimming conditions. Acclimatised swimmers will be most comfortable.

Key takeaways

• Located in New York, 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.

Jan4°C Feb3°C Mar4°C Apr8°C May13°C Jun18°C Jul22°CBest Aug23°CBest Sep20°C Oct16°C Nov11°C Dec7°C

3°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	4°C	Cold
Feb	3°C	Cold
Mar	4°C	Cold
Apr	8°C	Cold
May	13°C	Cold
Jun	18°C	Pleasant
Jul	22°C	Warm
Aug ⭐	23°C	Warm
Sep	20°C	Pleasant
Oct	16°C	Bracing
Nov	11°C	Cold
Dec	7°C	Cold

Can you swim here? — Robert Moses Beach