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Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 7 am Saturday 21 Mar 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
3.2° C
(Which is slightly cooler than normal)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 11AM is: 0.6m 8s primary swell from a East direction and 0.5m 8s secondary swell from a Southeast direction (forecast issued at 07:00am March 21). An open ocean swell of 0.5m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (21 Mar) | 2.5ft (0.7m) | 8s |
| Afternoon (21 Mar) | 2ft (0.6m) | 8s |
| Evening (21 Mar) | 1.5ft (0.5m) | 8s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | 11 PM | 2 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 4 | 5 | 6 | 9 | 9 | 9 | 11 | 6 | 7 | 7 | 7 | 8 | 8 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 68 | 68 | 47 | 46 | 32 | 31 | 29 | 28 | 17 | 9 | 8 | 22 | 23 | 21 | 44 | 15 | 25 | 21 | 249 | 353 | 384 | 353 | 350 | 362 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | on | cross | cross- off | cross- off | off | off | off | cross- off | cross | cross | cross- on | cross- on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | off | off | off | cross- on |
High Tide / height (m) | 1:52PM 3.00 | 2:07AM 3.26 | 2:40PM 2.94 | 2:56AM 3.27 | 3:32PM 2.84 | |||||||||||||||||||
Low Tide / height (m) | 7:40AM -0.27 | 7:56PM -0.05 | 8:28AM -0.30 | 8:42PM -0.00 | 9:20AM -0.27 | 9:33PM 0.08 | ||||||||||||||||||
Saturday 21 | Sunday 22 | Monday 23 | Tue 24 | |||||||||||||||||||||
| Sunrise | - | 6:45 | - | - | - | - | - | - | - | 6:43 | - | - | - | - | - | - | - | 6:41 | - | - | - | - | - | - |
| Sunset | - | - | - | - | 6:54 | - | - | - | - | - | - | - | 6:55 | - | - | - | - | - | - | - | 6:57 | - | - | - |
 |  |  |  | | | |  | | | |  | |  | | | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | 2 | 3 | 3 | 2 | 1 | - | - | - | - | - | - | - | - |
| Temp. °C | 6 | 6 | 4 | 6 | 6 | 5 | 4 | 3 | 3 | 3 | 5 | 7 | 8 | 7 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 |
| Feels °C (?) | 3 | 3 | -1 | 1 | 1 | 1 | 0 | -1 | -2 | -3 | -2 | 3 | 5 | 5 | -6 | -6 | -7 | -7 | -8 | -8 | -7 | -5 | -3 | -3 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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.
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