Massachusetts
Midday is the call — 1-2ft waves with glassy conditions and poor conditions.
Midday is the call — 1-2ft waves with glassy conditions and poor conditions.
Best window·Sunday 5PM–8PM·3-4ft·Fair - Good
Here's how the next 5 days are shaping up at Nantasket Beach, Massachusetts. Each day is rated based on breaking wave height, swell period, and wind — updated hourly from the latest NOAA GFS run.
Thu, Sep 3: 1–2ft, 5s period, rated Poor. First light looks cleanest — 1-2ft on SE swell at 3s with calm winds. Onshore flow builds through the day to 7mph, bringing conditions down to poor.
Fri, Sep 4: 2–3ft, 6s period, rated Fair - Good. Late morning into early afternoon looks best — 2-3ft with light winds out of the WNW. Morning is a bit bumpy but things clean up by late morning.
Sat, Sep 5: 1–2ft, 5s period, rated Very Poor. Pretty quiet out there — 1-2ft and mostly very poor with strong N wind at 13mph.
Sun, Sep 6: 3–4ft, 8s period, rated Very Poor. 2-3+ft waves to start the day on NE swell at 6s.
Mon, Sep 7: 2–3ft, 10s period, rated Poor. The sweet spot is around midday — 2-3ft waves, 8mph NW winds, fair conditions. Early on is a little rough — give it until mid-morning to shape up.
Two days at a glance. Swipe for later hours.Five days at a glance. Drag for later hours.
Poor today — get one free email when Nantasket Beach turns Good.
Check Nantasket Beach from the lineup
Forecasts, surf alerts, and live conditions in the Swell Intel iPhone app.
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.
Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.
The current wave height at Nantasket Beach is 1-2ft with a 3.7s swell period. Wind is SE at 2mph. Conditions are rated Poor. The forecast updates hourly so you can plan your session around the cleanest windows.
The current breaking wave height at Nantasket Beach is 1-2ft, produced by a 1.7ft SE wind swell swell at 4s, a 1.1ft E secondary swell at 9s. 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 Nantasket Beach is Sunday from 5 PM to 8 PM with 3ft waves, a 7.5s swell period, and conditions rated Fair - Good. Check the hourly forecast for updates as conditions can shift.
Nantasket Beach works best with a NE swell and SW 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 Nantasket 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.
Nantasket Beach is a beach with a sand bottom, suited to beginner surfers. 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.
The prime season at Nantasket 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 Nantasket Beach include cold water temperatures, swimmers and beach crowds. Always check conditions before paddling out, respect local etiquette, and never surf alone if you're unfamiliar with the break.
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. 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).
