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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 Thursday 07 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
8.4° C
(Which is normal for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 10AM is: 0.4m 5s primary swell from a Southeast direction and 0.2m 9s secondary swell from a East direction (forecast issued at 07:00am May 07). An open ocean swell of 0.2m 2s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 May) | 1.5ft (0.4m) | 5s |
| Afternoon (07 May) | 0.5ft (0.2m) | 9s |
| Evening (07 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 ForecastHeavy rain (total 21mm), heaviest during Sat night. Very mild (max 15°C on Thu afternoon, min 9°C on Thu night). Winds increasing (calm on Thu afternoon, fresh winds from the SSW by Sat afternoon). | ||||||||||||||||||||||||
Thursday 7 | Friday 8 | Saturday 9 | Sun 10 | |||||||||||||||||||||
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 | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
SE 5 | SE 5 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | |
7 | 7 | 6 | 6 | 6 | 6 | 6 | 6 | 14 | 17 | 29 | 47 | 65 | 62 | 58 | 58 | 58 | 57 | 40 | 39 | 40 | 38 | 37 | 23 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-on | glassy | cross | cross-on | cross | cross | cross-on | cross-on | cross-off | glassy | cross | cross-on | cross-on | on | on | cross-on | cross-on | cross-on | on | cross-on | cross-on | on | |
High Tide | 3:35AM2.72m | 4:15PM2.37m | 4:24AM2.67m | 5:06PM2.35m | 5:17AM2.62m | 5:59PM2.37m | ||||||||||||||||||
Low Tide | 10:02AM0.33m | 10:11PM0.66m | 10:51AM0.38m | 11:03PM0.68m | 11:42AM0.41m | 11:59PM0.66m | ||||||||||||||||||
 |  |  |  | |  | |  | | | |  | | | |  | | | | | |  |  | | |
 | 5:31 | — | — | — | — | — | — | — | 5:30 | — | — | — | — | — | — | — | 5:28 | — | — | — | — | — | — | 5:26 |
 | — | — | — | — | 7:46 | — | — | — | — | — | — | — | 7:47 | — | — | — | — | — | — | — | 7:49 | — | — | 7:50 |
1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 4 | 15 | — | |
Temp °C | 11 | 10 | 11 | 15 | 15 | 14 | 11 | 10 | 9 | 9 | 11 | 12 | 13 | 12 | 10 | 10 | 9 | 11 | 14 | 15 | 14 | 12 | 12 | 12 |
8 | 8 | 7 | 12 | 12 | 10 | 6 | 5 | 4 | 4 | 8 | 9 | 9 | 8 | 6 | 6 | 4 | 7 | 8 | 8 | 8 | 6 | 8 | 8 | |
Swell 1 Height (m) Direction Period (s) | SE 5 | SE 5 | ESE 5 | ESE 5 | ESE 5 | ESE 5 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 |
 kJ | 7 | 7 | 6 | 3 | 3 | 3 | 6 | 6 | 14 | 17 | 29 | 47 | 65 | 62 | 58 | 58 | 58 | 57 | 40 | 39 | 40 | 38 | 37 | 23 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | ESE 5 | ESE 5 | SE 8 | ESE 8 | NNW 3 | N 3 | — | S 8 | — | SSW 5 | S 7 | — | — | — | — | SSE 5 | E 13 | SE 6 |
| kJ | 7 | 6 | 6 | 6 | 6 | 6 | 3 | 3 | 3 | 7 | 1 | 1 | — | 1 | — | 2 | 1 | — | — | — | — | 3 | 4 | 11 |
Swell 3 Height (m) Direction Period (s) | — | E 10 | SSW 7 | — | — | E 9 | SE 9 | SE 8 | SE 5 | SSW 7 | SSW 7 | S 7 | — | — | — | — | — | — | — | — | — | E 13 | — | E 13 |
| kJ | — | 7 | 4 | — | — | 2 | 3 | 3 | 1 | 5 | 5 | 1 | — | — | — | — | — | — | — | — | — | 4 | — | 4 |
Wind waves Height (m) Direction Period (s) | — | — | NNW 2 | — | S 7 | — | WNW 2 | NW 3 | NNW 3 | NW 3 | — | SSW 7 | — | — | W 2 | — | — | — | S 3 | S 3 | S 4 | S 4 | SSE 5 | S 3 |
| kJ | — | — | 1 | — | 27 | — | 1 | 1 | 2 | 2 | — | 19 | — | — | 1 | — | — | — | 2 | 7 | 17 | 6 | 11 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 6 | 58 | 72 | 87 | 85 | 106 | 72 | 58 | 74 | 85 | 85 | 6 | 6 | 15 | 15 | 2 | 2 | 2 | 2 | 959 | 959 | 959 | 959 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Ocean Swells (m)- Wind Speed (km/h)
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