New York
Here's how the next 5 days are shaping up at Mastic Beach, New York. Each day is rated based on breaking wave height, swell period, and wind — updated hourly from the latest NOAA GFS run.
Sun, May 10: 3–4ft, 8s period, rated Fair. Steady 3-4ft waves on offer on SSE swell at 8s — 8mph from the S.
Mon, May 11: 2–3ft, 8s period, rated Fair. Rideable all day with 2-3ft waves on SE swell at 7s and light winds out of the N.
Tue, May 12: 2–3ft, 8s period, rated Fair. Dawn patrol is the move — 2-3ft on ESE swell at 7s with 7mph NNW winds. Onshore flow builds through the day to 13mph, bringing conditions down to poor - fair.
Wed, May 13: 2–3ft, 5s period, rated Poor. First light looks cleanest — 2-3ft on ESE swell at 7s with 12mph SSW winds. Wind fills in through the day, pushing up to 18mph from the S and dropping conditions to poor.
Thu, May 14: 3–4ft, 6s period, rated Poor. The sweet spot is around midday — 3-4ft waves, 12mph from the SSW, poor - fair conditions. Morning is a bit bumpy but things clean up by late morning.
Free, simple, and takes 30 seconds.
Mastic Beach is a sandy beach break on Long Island's South Shore that picks up swell from northeastern and northwesterly directions, making it a reliable option during autumn swells and nor'easters. The beach offers forgiving sand bottom conditions ideal for progression, with mellow rolling waves that peel across the sandy seafloor. Located in a quieter residential area, this spot provides a more relaxed atmosphere compared to the busier Atlantic-facing beaches in the region.
Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.
The current wave height at Mastic Beach is 3-4ft with a 8.15s swell period. Wind is S at 7mph and conditions are rated Fair. The forecast updates hourly so you can plan your session around the cleanest windows.
The current breaking wave height at Mastic Beach is 3-4ft, produced by a 4.8ft SSE primary swell at 8s. Breaking wave height is the actual rideable wave size at the shore — calculated from offshore swell data using this spot's coastal bathymetry — not the raw buoy reading.
Based on the current 5-day forecast, the best window to surf Mastic Beach is Sunday from 4 PM to 7 PM with 4ft waves, a 8.15s swell period, and conditions rated Fair. Check the hourly forecast for updates as conditions can shift.
Mastic Beach works best with a SSE swell and NNW winds. Offshore winds groom the face of the wave, while onshore winds turn it sloppy. Cross-offshore conditions usually produce the cleanest shape.
Tide plays a big role at Mastic Beach. Mid tide works for most beach breaks, while reef and point breaks often prefer higher or lower stages. Use the tide chart above to line up your session with the swell peak.
Mastic Beach is a beach with a sand bottom, suited to beginner surfers. Mastic Beach is a sandy beach break on Long Island's South Shore that picks up swell from northeastern and northwesterly directions, making it a reliable option during autumn swells and nor'easters. The beach offers forgiving sand bottom conditions ideal for progression, with mellow rolling waves that peel across the sandy seafloor. Located in a quieter residential area, this spot provides a more relaxed atmosphere compared to the busier Atlantic-facing beaches in the region.
The prime season at Mastic Beach is fall, when swell direction, wind patterns, and water temps line up most consistently. Outside the peak season you can still score, but you'll need to watch the forecast closely for the right windows.
Common hazards at Mastic Beach include strong currents, occasional sharp shells. Always check conditions before paddling out, respect local etiquette, and never surf alone if you're unfamiliar with the break.
Our Mastic Beach forecast uses NOAA GFS and other weather models combined with spot-specific bathymetry to calculate breaking wave heights. Short-range (1-3 day) forecasts are most reliable. Extended forecasts show general trends. See the forecast accuracy card above for per-spot and regional performance metrics.
