- 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 Tuesday 19 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
11.2° 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 3AM is: 0.2m 9s primary swell from a East-southeast direction and 0.1m 16s secondary swell from a East direction, 0.4m 3s secondary swell from a Southwest direction (forecast issued at 07:00pm May 19). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 May) | 0.5ft (0.2m) | 10s |
| Afternoon (20 May) | 0.5ft (0.2m) | 10s |
| Evening (20 May) | 0.5ft (0.2m) | 9s |
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 4mm), mostly falling on Tue night. Warm (max 30°C on Wed morning, min 10°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||||||
Tue 19 | Wednesday 20 | Thursday 21 | Fri 22 | |||||||||||||||||||||
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 |  |    |    |    | ||||||||||||||||||||
SSW 4 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | NE 5 | NE 4 | NE 4 | E 9 | NE 4 | E 14 | E 11 | E 13 | E 10 | |
13 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | 7 | 9 | 9 | 8 | 8 | 8 | 8 | 10 | 13 | 9 | 7 | 5 | 4 | 3 | 3 | 2 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-on | cross-off | off | cross-off | off | cross-off | cross | cross-on | on | cross-off | off | off | cross-off | cross-off | |
High Tide | 2:08PM2.95m | 2:21AM3.48m | 3:04PM2.91m | 3:19AM3.38m | 4:01PM2.88m | 4:19AM3.24m | ||||||||||||||||||
Low Tide | 8:04PM0.03m | 8:49AM-0.36m | 9:01PM0.08m | 9:45AM-0.26m | 10:00PM0.14m | 10:43AM-0.14m | ||||||||||||||||||
 |  |  |  | | | |  |  | |  |  | | | | | | |  | | | | | | |
 | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:16 | — | — | — | — | — | — | — | 5:15 | — | — | — |
 | — | 8:00 | — | — | — | — | — | — | — | 8:00 | — | — | — | — | — | — | — | 8:01 | — | — | — | — | — | 8:01 |
— | 1 | 1 | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 25 | 23 | 21 | 20 | 20 | 23 | 30 | 30 | 30 | 25 | 21 | 17 | 15 | 13 | 12 | 10 | 11 | 12 | 12 | 11 | 11 | 12 | 13 | 14 |
21 | 22 | 20 | 19 | 19 | 22 | 28 | 28 | 28 | 23 | 18 | 15 | 13 | 9 | 8 | 6 | 7 | 9 | 10 | 7 | 6 | 8 | 9 | 9 | |
Swell 1 Height (m) Direction Period (s) | ESE 10 | ESE 10 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | — | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | NE 5 | NE 4 | NE 4 | NE 4 | NE 4 | SE 9 | SE 9 | E 10 | NE 3 |
 kJ | 9 | 9 | 9 | 8 | 8 | 9 | 9 | 9 | — | 9 | 9 | 8 | 8 | 8 | 8 | 10 | 13 | 9 | 5 | 5 | 3 | 3 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | S 6 | E 16 | E 16 | E 16 | E 16 | E 12 | E 12 | E 12 | E 10 | E 12 | E 12 | E 14 | E 14 | E 14 | E 14 | ESE 9 | E 9 | E 9 | E 4 | ESE 4 | E 11 | E 11 | E 5 | E 10 |
| kJ | 1 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 7 | 3 | 3 | 4 | 4 | 4 | 4 | 8 | 7 | 7 | 1 | 1 | 2 | 2 | 1 | 2 |
Swell 3 Height (m) Direction Period (s) | E 16 | — | — | E 12 | — | S 6 | E 12 | — | SE 5 | — | E 15 | — | SW 7 | SSE 6 | SE 6 | E 14 | E 15 | E 15 | E 9 | SE 9 | E 14 | E 5 | E 13 | — |
| kJ | 5 | — | — | 3 | — | 1 | 3 | — | 1 | — | 4 | — | 2 | 4 | 1 | 4 | 4 | 4 | 7 | 3 | 4 | 1 | 3 | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | SW 3 | — | NW 4 | NW 4 | NW 4 | N 4 | N 4 | NNE 4 | — | — | — | — | — | NE 4 | NE 3 | NE 3 | — |
| kJ | 13 | 7 | 2 | 2 | 3 | 2 | 2 | 2 | — | 4 | 5 | 3 | 6 | 6 | 5 | — | — | — | — | — | 4 | 3 | 2 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 81 | 81 | 81 | 85 | 337 | 337 | 337 | 131 | 77 | 58 | 85 | 96 | 106 | 106 | 106 | 524 | 524 | 299 | 275 | 656 | 866 | 878 | 832 |
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