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Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
16 Day Weather and Surf, issued 7 pm Wednesday 27 May 2026 EDTForecast update in hr min s Forecast update imminent
Green Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Green Harbor sea temperature is
12.3° C
(Which is slightly warmer than usual)Green Harbor surf forecast from 28 May 2026:
- Best quality surf: Saturday 30 May, 8PM (local time) - 8ft (2.5m), 9s period, NE swell with offshore winds.
- Most powerful swell: Saturday 30 May, 11AM (local time) - 13ft (4.0m), 9s period, NNE swell with 2,821 kJ wave energy.
- Next surfable swell (1★+): Saturday 30 May, 8PM (local time) - 8ft (2.5m), 9s period with NE swell.
Best Forecast Surf Conditions for Green Harbor this week:
The surf forecast for Green Harbor over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (May 30) at 8PM. The primary swell is predicted to be 2.5m and 9s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Green Harbor in the next 16 days are 4.0m 9s and forecast to arrive on Saturday (May 30) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 5s period and expected on Tuesday (Jun 02) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 30th May) | 8ft (2.5m) 9s |
| Best Surf | 8PM (Sat 30th May) | 8ft (2.5m) 9s |
| Most Powerful | 11AM (Sat 30th May) | 13ft (4.0m) 9s |
Table - best surf conditions forecast for Green Harbor over the next 16 days.
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 17mm), heaviest on Fri night. Warm (max 24°C on Wed night, min 7°C on Sat morning). Winds increasing (light winds from the N on Fri morning, near gales from the NNE by Sat morning). | Days 5-7 Weather SummaryModerate rain (total 17mm), heaviest on Mon afternoon. Very mild (max 19°C on Sun afternoon, min 9°C on Sat night). Winds increasing (calm on Sun afternoon, strong winds from the NNE by Mon night). | ||||||||||||||||||||
Thursday 28 | Friday 29 | Saturday 30 | Sunday 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||
Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | |
Swell Height Map |  |  |  |  |  |  |  |  | |||||||||||||
SE 6 | E 13 | NE 4 | ENE 9 | NE 6 | NE 7 | ENE 9 | NNE 9 | NE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | NNE 5 | NNE 5 | SE 8 | NE 6 | |
6 | 3 | 9 | 15 | 24 | 54 | 50 | 2821 | 1580 | 604 | 234 | 184 | 96 | 51 | 35 | 20 | 10 | 19 | 11 | 3 | 23 | |
Wind (km/h) | |||||||||||||||||||||
cross-off | off | off | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-on | cross-off | glassy | cross-on | cross-on | glassy | cross-off | cross-off | cross | cross | cross-off | off | |
High Tide | 9:49PM2.96m | 10:23AM2.63m | 10:34PM2.95m | 11:09AM2.58m | 11:14PM2.93m | 11:50AM2.54m | 11:52PM2.90m | 12:29PM2.50m | 00:30AM2.87m | 1:05PM2.47m | 1:07AM2.85m | 1:43PM2.45m | 1:45AM2.83m | 2:22PM2.44m | |||||||
Low Tide | 4:07AM0.17m | 4:14PM0.40m | 4:53AM0.16m | 4:56PM0.46m | 5:34AM0.17m | 5:36PM0.51m | 6:13AM0.18m | 6:15PM0.54m | 6:51AM0.20m | 6:53PM0.56m | 7:29AM0.22m | 7:32PM0.58m | 8:09AM0.23m | ||||||||
 |  | |  | | | |  |  |  | | |  | |  | | | | |  | | |
 | — | 5:11 | — | — | 5:11 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:09 | — | — | 5:07 | — |
 | 8:07 | — | 8:07 | — | — | 8:08 | — | — | 8:09 | — | — | 8:09 | — | — | 8:10 | — | — | 8:12 | — | — | 8:13 |
— | — | — | 1 | — | — | 10 | 4 | 2 | — | — | — | 1 | 2 | 7 | 4 | — | 3 | 1 | — | — | |
Temp °C | 24 | 14 | 14 | 14 | 14 | 15 | 13 | 8 | 10 | 11 | 14 | 19 | 16 | 16 | 14 | 12 | 13 | 14 | 12 | 13 | 16 |
23 | 11 | 12 | 12 | 11 | 11 | 11 | -1 | 1 | 5 | 11 | 17 | 14 | 13 | 12 | 9 | 8 | 11 | 8 | 8 | 13 | |
Swell 1 Height (m) Direction Period (s) | SE 6 | SE 8 | NE 4 | ENE 9 | NE 6 | NE 7 | ENE 9 | SSW 6 | — | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | NNE 5 | NNE 5 | SE 8 | NE 6 |
 kJ | 2 | 3 | 9 | 15 | 24 | 54 | 50 | 8 | — | 604 | 234 | 184 | 96 | 51 | 35 | 20 | 10 | 19 | 11 | 3 | 23 |
Swell 2 Height (m) Direction Period (s) | SE 6 | S 6 | NE 10 | SE 8 | ENE 8 | SE 8 | — | — | — | — | S 6 | — | — | — | SE 5 | SE 5 | SE 9 | ENE 7 | ENE 7 | E 7 | SE 7 |
| kJ | 6 | 1 | 4 | 3 | 13 | 3 | — | — | — | — | 1 | — | — | — | 1 | 1 | 3 | 11 | 5 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | E 13 | E 13 | SE 8 | S 7 | E 9 | — | — | — | — | — | — | — | — | — | — | E 13 | E 13 | SE 8 | SE 8 | — | E 9 |
| kJ | 4 | 3 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 3 | 2 | — | 2 |
Wind waves Height (m) Direction Period (s) | NNE 4 | NNE 4 | — | NE 5 | — | SSE 2 | NW 3 | NNE 9 | NE 9 | — | — | S 2 | SW 3 | SW 2 | SW 3 | N 4 | NNE 5 | — | — | NE 6 | — |
| kJ | 10 | 12 | — | 10 | — | 1 | 2 | 2821 | 1580 | — | — | 1 | 3 | 2 | 2 | 29 | 39 | — | — | 37 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 96 | 106 | 105 | 973 | 56 | 1204 | 515 | 655 | 55 | 1 | 0 | 0 | 1 | 6 | 54 | 261 | 151 | 56 | 832 | 804 | 91 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Green Harbor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Information about the Green Harbor Surf forecast
The above surf forecast table for Green Harbor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Green Harbor can be found by selecting the local surf guide option on the grey menu. Our Green Harbor surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Green Harbor) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).
Further information to help with frequently asked questions about our surf forecast for Green Harbor may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.
Green Harbor is 5 km (3 miles) from Duxbury. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Duxbury. Duxbury has rooms for a wide range of budgets as well as car hire and transport links.
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