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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 1 pm Monday 20 Apr 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
7.2° C
(Which is 1.2°C warmer than normal for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 10PM is: 0.4m 8s primary swell from a East-northeast direction (forecast issued at 01:00pm April 20). An open ocean swell of 0.4m 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 (20 Apr) | 1.5ft (0.4m) | 7s |
| Afternoon (20 Apr) | 1.5ft (0.4m) | 7s |
| Evening (20 Apr) | 1.5ft (0.4m) | 8s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| 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 | 5 AM | 8 AM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 8 | 7 | 7 | 7 | 5 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 4 | 4 | 8 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 15 | 15 | 16 | 20 | 19 | 19 | 19 | 19 | 11 | 17 | 10 | 15 | 9 | 9 | 9 | 9 | 8 | 8 | 8 | 7 | 20 | 11 | 10 | 9 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | glass | cross | cross- off | cross- off | off | cross- off | cross- off | off | cross- off | cross- off | cross- on | cross- on | on | on | cross- on | cross- on | cross- on | cross- on | cross- on | on | cross- on | cross- on | cross- on |
High Tide / height (m) | 2:23PM 2.95 | 2:37AM 3.41 | 3:18PM 2.87 | 3:33AM 3.33 | 4:16PM 2.79 | 4:34AM 3.21 | ||||||||||||||||||
Low Tide / height (m) | 8:10AM -0.40 | 8:22PM 0.03 | 9:04AM -0.34 | 9:16PM 0.09 | 10:00AM -0.23 | 10:14PM 0.18 | ||||||||||||||||||
Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:50 | - | - | - | - | - | - | - | 5:50 |
| Sunset | - | - | 7:28 | - | - | - | - | - | - | - | 7:30 | - | - | - | - | - | - | - | 7:30 | - | - | - | - | - |
 |  | |  |  |  |  |  | |  | | | | | | | | | |  | | | | | |
Rain (mm) | - | 1 | 1 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 1 | 1 | - | - | - | - |
| Temp. °C | 8 | 8 | 7 | 7 | 4 | 4 | 4 | 3 | 4 | 4 | 4 | 5 | 4 | 4 | 5 | 2 | 4 | 4 | 5 | 6 | 6 | 7 | 6 | 6 |
| Feels °C (?) | 3 | 5 | 3 | 2 | -4 | -3 | -2 | -3 | -2 | -2 | -3 | -2 | -3 | -3 | -1 | -4 | -3 | -2 | 0 | 3 | 4 | 5 | 3 | 3 |
- Map Icons:
Break
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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