Robert Moses Beach
Five-mile Fire Island state-park beach.
Mild water with a light chop and a light breeze — comfortable conditions for most swimmers.
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.
Shorty 2mm
At 19.0°C a 2mm shorty keeps surfers warm; lap swimmers can usually skip the neoprene.
Recommendation tuned for Robert Moses Beach's current water temperature. Individual tolerance, wind chill, and session length all matter — when in doubt, size up.
Can I swim at Robert Moses Beach today?
The sea is currently 19.0°C — good swimming conditions. Most swimmers will find it pleasant.
- • 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.
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 |
Nearby beaches
The closest coastline, with live water temperatures.