- Forecast
- Maps
- Live
- Weather State
- Spot Information
Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 7 pm Sunday 10 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
9.5° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 11PM is: 0.6m 8s primary swell from a East direction and 0.1m 9s secondary swell from a Southeast direction, 0.2m 2s secondary swell from a West-southwest direction (forecast issued at 07:00pm May 10). The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (10 May) | - | - |
| Afternoon (10 May) | 1.5ft (0.4m) | 9s |
| Evening (10 May) | 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
Short Range ForecastLight rain (total 3mm), mostly falling on Sun night. Very mild (max 16°C on Sun night, min 8°C on Mon night). Winds increasing (light winds from the NE on Mon afternoon, fresh winds from the S by Wed afternoon). | ||||||||||||||||||||||||
Sun 10 | Monday 11 | Tuesday 12 | Wed 13 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 10 | E 7 | E 7 | E 7 | ENE 7 | E 7 | |
24 | 22 | 45 | 50 | 49 | 48 | 46 | 44 | 42 | 42 | 73 | 93 | 68 | 65 | 44 | 41 | 40 | 27 | 18 | 10 | 16 | 9 | 9 | 8 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | cross-on | cross-off | cross | cross-off | cross-off | off | cross | cross-on | on | cross-off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | on | on | on | on | cross-on | cross-on | |
High Tide | 6:53PM2.45m | 7:09AM2.60m | 7:45PM2.57m | 8:05AM2.64m | 8:34PM2.73m | 9:00AM2.70m | ||||||||||||||||||
Low Tide | 00:56AM0.59m | 1:27PM0.39m | 1:52AM0.47m | 2:18PM0.34m | 2:47AM0.30m | |||||||||||||||||||
 |  |  |  | |  | | | | | | | |  | |  | | | |  | | | | | |
 | — | — | — | — | 5:26 | — | — | — | — | — | — | — | 5:24 | — | — | — | — | — | — | — | 5:24 | — | — | — |
 | 7:50 | — | — | — | — | — | — | — | 7:51 | — | — | — | — | — | — | — | 7:52 | — | — | — | — | — | — | 7:53 |
— | — | — | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 19 | 16 | 16 | 10 | 10 | 10 | 12 | 13 | 13 | 12 | 11 | 10 | 8 | 9 | 11 | 12 | 13 | 12 | 11 | 11 | 10 | 11 | 15 | 14 |
15 | 14 | 14 | 5 | 6 | 6 | 7 | 9 | 8 | 7 | 7 | 5 | 3 | 4 | 6 | 7 | 8 | 6 | 7 | 6 | 6 | 6 | 8 | 6 | |
Swell 1 Height (m) Direction Period (s) | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | E 7 | E 7 | E 7 | E 7 | E 7 | ENE 7 | E 7 |
 kJ | 24 | 22 | 45 | 50 | 49 | 48 | 46 | 44 | 42 | 42 | 73 | 93 | 68 | 65 | 44 | 41 | 40 | 27 | 15 | 9 | 16 | 9 | 9 | 8 |
Swell 2 Height (m) Direction Period (s) | ESE 5 | ESE 5 | SE 9 | SE 8 | E 13 | N 3 | E 12 | E 12 | — | — | — | E 15 | E 15 | E 15 | S 6 | NNE 4 | NNE 4 | NNE 4 | E 10 | ESE 7 | E 11 | ESE 7 | ESE 7 | E 10 |
| kJ | 6 | 6 | 3 | 21 | 3 | 1 | 3 | 3 | — | — | — | 4 | 4 | 4 | 1 | 5 | 3 | 1 | 18 | 10 | 9 | 9 | 5 | 8 |
Swell 3 Height (m) Direction Period (s) | ESE 8 | ESE 8 | E 16 | S 8 | S 8 | E 12 | S 7 | E 12 | E 12 | E 15 | E 15 | SE 7 | S 6 | E 15 | E 15 | E 11 | S 6 | E 11 | NE 4 | E 10 | NE 4 | E 10 | E 10 | ESE 7 |
| kJ | 6 | 6 | 5 | 5 | 5 | 3 | 4 | 3 | 3 | 4 | 4 | 2 | 1 | 4 | 4 | 10 | 1 | 2 | 1 | 8 | 1 | 8 | 8 | 5 |
Wind waves Height (m) Direction Period (s) | S 3 | SSW 3 | WSW 2 | NW 2 | NNW 3 | — | — | N 3 | — | — | — | — | N 3 | N 4 | N 4 | — | — | S 2 | SSW 3 | SSW 2 | — | — | SSW 3 | S 3 |
| kJ | 2 | 3 | 1 | 2 | 1 | — | — | 1 | — | — | — | — | 2 | 10 | 7 | — | — | 2 | 2 | 1 | — | — | 2 | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 2 | 9 | 2 | 15 | 15 | 43 | 6 | 43 | 2 | 39 | 32 | 32 | 55 | 43 | 43 | 85 | 43 | 52 | 56 | 54 | 54 | 1936 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- 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.
Nearest