Swell Intel

Mastic Beach Surf Forecast, New York

New York

Fire Island3-4ftCupsogue4-5ftWest Dune Rd. 4-5ft
Mastic Beach surf spot

Current Conditions

Poor
Wave Height
4-5ft
chest to head high
Swell Period
7.4s
Wind
19mph
SSW / Gusts 32mph
Conditions
Poor
Active Swells
Wind Swell
7.5ft @ 7sS

Nearest Webcam

Daily Forecast

3 of 5 days
Tue, Mar 314-5ft
Poor
6am9am12pm3pm
Wed, Apr 15-6ft
Poor - Fair

Midday is the call — 5-6ft waves with strong SW wind at 14mph and poor - fair conditions. Morning is a bit bumpy but things clean up by late morning.

6am9am12pm3pm
8s S|9-18mph SW
Thu, Apr 22-3ft
Poor - Fair

Slim pickings today — 2-3ft and poor - fair with 15mph NE winds.

6am9am12pm3pm
7s S|15-16mph NE
Sign up to unlockFree — no credit card
Sat
2ft
Swell building Fri, Apr 3Poor

6s period — conditions are improving beyond your forecast

Sign up free to track it

Forecast Charts

Mastic Beach Surf Spot Guide

Break
Beach
Bottom
Sand
Level
Beginner
Crowd
Moderate
Best Swell
SSE
Best Wind
NNW
Season
Fall

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.

Strong currentsOccasional sharp shells

Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.

Mastic Beach Surf Forecast FAQ

What is the current surf forecast for Mastic Beach?
The current wave height at Mastic Beach is 4-5ft with a 7.4s swell period. Wind is SSW at 19mph. Conditions are rated Poor.
How accurate is the Mastic Beach surf forecast?
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.
What is the breaking wave height at Mastic Beach?
The current breaking wave height at Mastic Beach is 4-5ft, produced by a 7.5ft S wind swell swell at 7s. 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.
When is the best time to surf Mastic Beach?
Based on the current 5-day forecast, the best window to surf Mastic Beach is Wednesday from 5 PM to 8 PM with 4ft waves, a 7.85s swell period, and conditions rated Fair. Check the hourly forecast for updates as conditions can shift.