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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 pm Monday 04 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
8.8° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 1AM is: 0.6m 4s primary swell from a South-southwest direction and 0.2m 8s secondary swell from a East-northeast direction, 0.1m 5s secondary swell from a Southeast direction (forecast issued at 07:00pm May 04). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (05 May) | 2ft (0.6m) | 3s |
| Afternoon (05 May) | 2.5ft (0.8m) | 4s |
| Evening (05 May) | 3ft (0.9m) | 4s |
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 8mm), mostly falling on Wed night. Very mild (max 19°C on Tue afternoon, min 11°C on Mon night). Winds decreasing (strong winds from the SSW on Tue night, calm by Thu morning). | ||||||||||||||||||||||||
Mon 4 | Tuesday 5 | Wednesday 6 | Thu 7 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ENE 9 | SSW 4 | SSW 4 | SSW 3 | E 9 | SSW 3 | SSW 4 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | S 4 | S 4 | SSW 4 | SSW 4 | SE 6 | SE 5 | SE 5 | E 9 | E 9 | |
45 | 16 | 15 | 8 | 6 | 9 | 13 | 17 | 19 | 21 | 21 | 21 | 21 | 20 | 25 | 32 | 33 | 20 | 12 | 8 | 7 | 7 | 6 | 6 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | on | on | on | cross-on | cross-on | on | on | on | cross | cross | glassy | cross-off | |
High Tide | 2:06PM2.52m | 2:10AM2.83m | 2:46PM2.46m | 2:51AM2.78m | 3:29PM2.41m | 3:35AM2.72m | ||||||||||||||||||
Low Tide | 7:58PM0.53m | 8:32AM0.21m | 8:39PM0.58m | 9:15AM0.27m | 9:23PM0.62m | 10:02AM0.33m | ||||||||||||||||||
 |  |  | | | | | | | | | |  |  |  | | |  | | | | | | | |
 | — | — | — | — | 5:33 | — | — | — | — | — | — | — | 5:31 | — | — | — | — | — | — | — | 5:31 | — | — | — |
 | 7:44 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — | — | 7:45 | — | — | — | — | — | — | 7:46 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 4 | 2 | 2 | — | — | — | — | |
Temp °C | 17 | 13 | 12 | 11 | 12 | 13 | 18 | 19 | 18 | 14 | 14 | 14 | 14 | 14 | 17 | 17 | 17 | 14 | 14 | 13 | 12 | 11 | 13 | 14 |
9 | 6 | 6 | 6 | 7 | 8 | 12 | 12 | 11 | 6 | 8 | 7 | 9 | 8 | 11 | 11 | 11 | 7 | 10 | 10 | 10 | 9 | 12 | 11 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 8 | E 9 | E 9 | E 9 | E 9 | SE 7 | SE 7 | ESE 7 | SE 6 | SE 6 | SE 6 | SE 6 | E 10 | E 10 | SE 6 | SE 6 | SE 6 | SE 5 | SE 5 | ESE 5 | ESE 5 |
 kJ | 45 | 15 | 15 | 7 | 6 | 2 | 2 | 2 | 2 | 2 | 5 | 1 | 5 | 5 | 5 | 2 | 2 | 12 | 12 | 8 | 7 | 7 | 6 | 3 |
Swell 2 Height (m) Direction Period (s) | NE 6 | E 9 | SE 8 | SE 5 | SE 5 | E 7 | — | — | E 9 | E 9 | E 9 | SE 8 | E 9 | E 10 | E 10 | — | — | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 |
| kJ | 1 | 2 | 2 | 1 | 1 | 1 | — | — | 2 | 2 | 2 | 3 | 2 | 2 | 2 | — | — | 2 | 2 | 7 | 7 | 7 | 6 | 6 |
Swell 3 Height (m) Direction Period (s) | — | — | SE 6 | SE 8 | SE 8 | — | — | — | — | — | — | E 10 | — | — | — | — | — | — | — | — | — | — | E 7 | — |
| kJ | — | — | 1 | 2 | 2 | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | 1 | — |
Wind waves Height (m) Direction Period (s) | SSW 4 | SSW 4 | SSW 4 | SSW 3 | SSW 3 | SSW 3 | SSW 4 | S 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | SSW 4 | S 4 | S 4 | SSW 4 | SSW 4 | SW 3 | WSW 3 | — | — | — |
| kJ | 21 | 16 | 12 | 8 | 6 | 9 | 13 | 17 | 19 | 21 | 21 | 21 | 21 | 20 | 25 | 32 | 33 | 20 | 12 | 6 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2473 | 2473 | 124 | 124 | 124 | 124 | 1928 | 1928 | 1928 | 1930 | 1936 | 1623 | 101 | 1206 | 1671 | 1926 | 1206 | 1205 | 131 | 6 | 81 | 57 | 57 | 124 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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