Massachusetts
Here's how the next 5 days are shaping up at South Beach State Park, Massachusetts. Each day is rated based on breaking wave height, swell period, and wind — updated hourly from the latest NOAA GFS run.
Sun, May 10: 3–4ft, 8s period, rated Poor - Fair. Not the most exciting day — 3-4ft and poor - fair conditions with 12mph SSW winds.
Mon, May 11: 1–2ft, 8s period, rated Poor. Get out early for the best of it — 2-3ft waves on S swell at 8s and 11mph from the NNW. Things get a bit scrappier as the day goes on.
Tue, May 12: 0–1ft, 7s period, rated Very Poor. A slow one — 1-2ft waves and poor conditions with 12mph N winds.
Wed, May 13: 1–2ft, 4s period, rated Poor. Slim pickings today — 0-1ft and very poor with 9mph from the SW. Winds do pick up a bit by the afternoon to 16mph.
Thu, May 14: 2–3ft, 6s period, rated Poor. A slow one — 2-3ft waves and poor conditions with strong SSE wind at 19mph.
6s period — conditions are improving beyond your forecast
Free, simple, and takes 30 seconds.
South Beach State Park in Yarmouth offers a sandy beach break with consistent, mellow waves ideal for learning and progression. Protected by Cape Cod's natural geography, this sheltered stretch receives moderate swell from nor'easters and autumn storms, delivering waist-to-shoulder-high peaks. The wide sandy bottom provides a forgiving learning environment with multiple peaks that can handle crowds while maintaining quality.
Wave heights shown are breaking wave heights — the actual rideable wave size at this spot.
The current wave height at South Beach State Park is 3-4ft with a 8.25s swell period. Wind is SSW at 12mph and conditions are rated Poor - Fair. The forecast updates hourly so you can plan your session around the cleanest windows.
The current breaking wave height at South Beach State Park is 3-4ft, produced by a 3.4ft S primary swell at 8s. 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 South Beach State Park is Monday from 6 AM to 9 AM with 2ft waves, a 7.8s swell period, and conditions rated Fair. Check the hourly forecast for updates as conditions can shift.
South Beach State Park 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 South Beach State Park. 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.
South Beach State Park is a beach with a sand bottom, suited to beginner surfers. South Beach State Park in Yarmouth offers a sandy beach break with consistent, mellow waves ideal for learning and progression. Protected by Cape Cod's natural geography, this sheltered stretch receives moderate swell from nor'easters and autumn storms, delivering waist-to-shoulder-high peaks. The wide sandy bottom provides a forgiving learning environment with multiple peaks that can handle crowds while maintaining quality.
The prime season at South Beach State Park 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 South Beach State Park include strong shore break during high swell, seasonal currents, crowded beach access during summer. Always check conditions before paddling out, respect local etiquette, and never surf alone if you're unfamiliar with the break.
Our South Beach State Park 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. See the forecast accuracy card above for per-spot and regional performance metrics.
