Swell Intel

Coskata Beach Surf Forecast

Massachusetts

Coskata Beach surf spot

Current Conditions

Very Poor
Wave Height
Flat
flat to ankle high
Swell Period
4.3s
Wind
12mph
S / Gusts 23mph
Conditions
Very Poor
Active Swells
Primary
0.7ft @ 9sE
Wind Swell
3.0ft @ 4sS

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Nearest Webcam

Spot Guide

Break
Beach
Bottom
Sand
Level
Intermediate
Crowd
Light
Best Swell
E
Best Wind
W
Season
Fall

Coskata Beach is a remote and wild stretch of coastline on the northeastern tip of Nantucket Island in Massachusetts, offering uncrowded waves shaped by Atlantic swells funneling through Nantucket Sound and the open ocean. The beach faces southeast toward the open Atlantic, picking up solid groundswells from late-season hurricanes and nor'easters that produce punchy, sandbars-driven beach break with both left and right options. Its extreme remoteness — accessible only by 4WD or boat — keeps crowds minimal and rewards adventurous surfers willing to make the trek.

Strong currentsRip currentsRemote locationCold waterSharksShifting sandbarsLimited access

Forecast Charts

Daily Forecast

Thu, Mar 26Very Poor

Not the most exciting day — Flat and very poor conditions with glassy conditions.

6am9am12pm3pm
9s E|Calm
Fri, Mar 27Very Poor

Pretty quiet out there — Flat and mostly very poor with calm winds.

6am9am12pm3pm
8s SSW|Calm
Sat, Mar 28Poor

A slow one — Flat waves and poor conditions with barely a breath of wind.

6am9am12pm3pm
7s S|Calm
Sun, Mar 29Very Poor

Pretty quiet out there — Flat and mostly very poor with calm winds.

6am9am12pm3pm
8s E|Calm
Mon, Mar 30Very Poor

Not the most exciting day — Flat and very poor conditions with glassy conditions.

6am9am12pm3pm
9s E|Calm

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Coskata Beach Surf Forecast FAQ

What is the current surf forecast for Coskata Beach?
The current wave height at Coskata Beach is Flat with a 4.3s swell period. Wind is S at 12mph. Conditions are rated Very Poor.
How accurate is the Coskata Beach surf forecast?
Our Coskata 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.