Green Harbor (Duxberry)
Pull to refresh
Hourly Forecast
Timezone: America/New_York
⏱️s.
⚡️kJ
🔮
🌒
Sunday 24
Monday 25
Tuesday 26
Wednesday 27
Thursday 28
Friday 29
Tap a forecast cell to explore conditions on the map.
Surfnerd Logo
Join Surfnerd for free to check this forecast
Join Surfnerd to check forecasts, set your homespot, save and create spots and log your surf sessions.
Sign up with AppleSign up with Google

Green Harbor (Duxberry) surf guide

Green Harbor, located in Duxbury, is one of the few surf spots in Massachusetts Bay that works well with a northeast wind. It’s a pretty accessible spot that offers some action if you catch it right. The area is known for its jetty, which can wrap bigger northeast to east swells, providing mainly lefts along with peaks further down the beach. It has a relaxed vibe, but don’t be surprised if it gets a bit crowded, especially when the surf’s on.

This spot is best when the swell comes from the east, but it can also handle swells from the north. Ideal wave heights tend to be around 2 feet (0.6 meters), and you can find good waves on mid to high tide. The waves usually break over sand, making it a little more forgiving for surfers of all levels. Expect some sloppy shoulders, but with the right conditions, you can pull off some decent cutbacks. Just keep in mind that the mid tide is where the magic happens.

Access to Green Harbor is free during the winter, which is a bonus if you’re looking to surf without spending any cash. Since the estuary flows out into the surf, you might experience some rippy sections, so stay aware of your surroundings. Overall, if you're looking for varied surf options in a less predictable setting, Green Harbor can be worth the trip.

Surf reports and surf forecasts nearby Green Harbor (Duxberry)

Winthrop Jetty
Massachusetts, United States
Unknown break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Nantasket Beach
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Egypt Beach
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Scituate Harbor
Massachusetts, United States
Point break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Egypt Beach
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Rexhame
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Fieldstone
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Green Harbor (Duxberry)
Massachusetts, United States
Unknown break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Marshfield Jetty
Massachusetts, United States
Unknown break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Brant Rock
Massachusetts, United States
Beach break
Sun 24
Mon 25
Tue 26
Wed 27
Thu 28
Fri 29
Sat 30
Sun 31
Mon 1
Tue 2
Wed 3
Thu 4
Login to do spot actions
Surfnerd Logo
Join Surfnerd+ and get:
  • 12-day
    forecast range
    (vs 6-day)
  • Unlimited
    spot checks
    (vs 5/day)
  • Expert AI
    surf forecast write-ups
"Great Forecasts. Nothing more, nothing less."
Wind certainty

Wind certainty tells you how much the weather models agree on the forecast.

  • High certainty: Models agree closely; forecast is reliable.
  • Medium certainty: Some disagreement; conditions may shift slightly.
  • Low certainty: Models diverge; treat forecast with caution.

We calculate this by comparing wind speed, gust and direction from multiple models (like GFS, ECMWF, Arome, and Harmonie) and seeing how closely they match. They are weighted, meaning that some models count more than others, depending on how good they are for a certain spot.

Readme

Welcome! If you’re new to surf forecasting, check out this quick guide.

Forecast Cheat Sheet

Short on time? Focus on wave energy. It’s the best single metric to gauge how big and powerful the waves will be.

Click any table cell to jump to that forecast hour. The map will update with forecast arrows, so you can see if wind and swell direction are lining up.

Use the table sidebar to switch units for height and speed.

Log your surf sessions to compare forecasts with real sessions and sharpen future predictions.

On the map, click a metric label to bring that arrow to the front — handy when arrows overlap.

Models and Updates

Surfnerd blends multiple global and local wind and swell models using advanced interpolation and spatial techniques to create an "ensemble" forecast. Forecasts are refreshed hourly.

Surf Predictions

Our AI-driven algorithm scores surf quality, shown by green, orange, and gray dots. Each forecast hour is rated for wind, swell, and tide quality, then combined into an overall score. Here’s the scale:

Perfect
Good
Average
Bad or No Data

Session logs also feed the algorithm — the more you log, the smarter your forecasts get.

With Surfnerd, no more "you should have been here yesterday"

Surfnerd for iOS: Faster loading, smoother experience.
Download on the App Store