New York
Midday is the call — 2-3ft waves with 17mph out of the WSW and very poor conditions.
Midday is the call — 2-3ft waves with 17mph out of the WSW and very poor conditions.
Best window·Sunday 1PM–4PM·2-3ft·Fair
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.
Thu, Sep 3: 2–3ft, 6s period, rated Very Poor. Midday is the call — 2-3ft waves with 17mph WSW winds and poor conditions. It's a bit wonky first thing but settles down.
Fri, Sep 4: 1–2ft, 8s period, rated Poor. Not the most exciting day — 1-2ft and poor conditions with light W winds.
Sat, Sep 5: 1–2ft, 8s period, rated Poor - Fair. Dawn patrol is the move — 1-2ft on ESE swell at 8s with 15mph N winds. Conditions go downhill through the afternoon.
Sun, Sep 6: 2–3ft, 7s period, rated Poor - Fair. Morning kicks off with 2-3ft on ENE swell at 6s.
Mon, Sep 7: 1–2ft, 10s period, rated Poor - Fair. Get out early for the best of it — 1-2ft waves on E swell at 10s and 11mph NNW winds. Conditions go downhill through the afternoon.
Two days at a glance. Swipe for later hours.Five days at a glance. Drag for later hours.
Very Poor today — get one free email when Mastic Beach turns Good.
Check Mastic Beach from the lineup
Forecasts, surf alerts, and live conditions in the Swell Intel iPhone app.
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 2-3ft with a 6.2s swell period. Wind is WSW at 17mph. Conditions are rated Very Poor. The forecast updates hourly so you can plan your session around the cleanest windows.
The current breaking wave height at Mastic Beach is 2-3ft, produced by a 2.5ft ESE wind swell swell at 6s, a 1.6ft SE secondary swell at 9s, a 1.2ft SW wind swell swell at 2s. 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 1 PM to 4 PM with 2ft waves, a 6.3s 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. We also verify our offshore swell predictions against NOAA buoy measurements daily — see our accuracy page for those swell-verification metrics (buoys measure open-water swell, not breaking surf size).
