Swell Intel

Nantasket Beach Surf Forecast, Massachusetts

Massachusetts

Wollaston Beach1-2+ftYirrell Beach0-1ftScituate0-1ft
Nantasket Beach surf spot

Current Conditions

Very Poor
Wave Height
Flat
flat to ankle high
Swell Period
4.45s
Wind
3mph
NNE / Gusts 6mph
Conditions
Very Poor
Active Swells
Primary
1.4ft @ 4sNE
Secondary
0.3ft @ 6sSE
Tertiary
0.3ft @ 10sESE

Daily Forecast

3 of 5 days
Tue, Mar 31Flat
Very Poor
6am9am12pm3pm
Wed, Apr 10-1ft
Very Poor

A slow one — 0-1ft waves and very poor conditions with light winds out of the WSW. Expect the wind to bump up to around 13mph by PM.

6am9am12pm3pm
5s NE|4-13mph SSW
Thu, Apr 22-3ft
Poor

Hold off if you can — morning starts out poor with 1-2ft waves. Later in the day looks more promising — 2-3ft and poor - fair.

6am9am12pm3pm
5s ENE|10-13mph ENE
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Sat

Forecast Charts

Nantasket Beach Surf Spot Guide

Break
Beach
Bottom
Sand
Level
Beginner
Crowd
Moderate
Best Swell
NE
Best Wind
SW
Season
Fall

Nantasket Beach is a sandy beach break located south of Boston that picks up consistent Atlantic swells, particularly during autumn and winter months. The sandy bottom provides a forgiving learning environment with generally mellow, rolling waves suitable for beginners and intermediate surfers. This accessible Massachusetts break offers a classic New England beach experience with decent swell direction alignment and relatively manageable conditions compared to more exposed coastal breaks.

Cold water temperaturesSwimmers and beach crowds

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

Nantasket Beach Surf Forecast FAQ

What is the current surf forecast for Nantasket Beach?
The current wave height at Nantasket Beach is Flat with a 4.45s swell period. Wind is NNE at 3mph. Conditions are rated Very Poor.
How accurate is the Nantasket Beach surf forecast?
Our Nantasket 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 Nantasket Beach?
The current breaking wave height at Nantasket Beach is Flat, produced by a 1.4ft NE primary swell at 4s, a 0.3ft SE secondary swell at 6s, a 0.3ft ESE tertiary swell at 10s. 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 Nantasket Beach?
Based on the current 5-day forecast, the best window to surf Nantasket Beach is Thursday from 11 AM to 2 PM with 2ft waves, a 5.1s swell period, and conditions rated Poor - Fair. Check the hourly forecast for updates as conditions can shift.