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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 Friday 01 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
8.2° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 11AM is: 1.0m 9s primary swell from a East direction (forecast issued at 07:00am May 01). An open ocean swell of 0.1m 12s is not directed at the surf break, a second open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (01 May) | 3.5ft (1.1m) | 9s |
| Afternoon (01 May) | 3.5ft (1.0m) | 9s |
| Evening (01 May) | 3ft (0.9m) | 9s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 12mm), heaviest on Sat night. Very mild (max 14°C on Fri afternoon, min 7°C on Sun morning). Winds increasing (calm on Fri afternoon, fresh winds from the NW by Sun morning). | ||||||||||||||||||||||||
Friday 1 | Saturday 2 | Sunday 3 | Mon 4 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 9 | ENE 9 | |
262 | 211 | 168 | 164 | 160 | 127 | 125 | 125 | 96 | 96 | 96 | 96 | 99 | 99 | 127 | 101 | 99 | 94 | 92 | 88 | 88 | 112 | 185 | 243 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross | cross-on | glassy | cross-on | on | on | on | on | on | cross-on | cross-on | cross-on | on | cross-off | cross-off | cross-off | cross | cross | cross | cross-on | cross-on | cross-on | |
High Tide | 12:13PM2.70m | 00:20AM2.96m | 12:51PM2.64m | 00:55AM2.92m | 1:28PM2.58m | 1:32AM2.87m | ||||||||||||||||||
Low Tide | 5:58AM0.07m | 6:05PM0.35m | 6:36AM0.09m | 6:42PM0.42m | 7:14AM0.12m | 7:20PM0.48m | ||||||||||||||||||
 |  |  | | | |  | | |  |  | | |  |  | | | | | | | | | | |
 | 5:39 | — | — | — | — | — | — | — | 5:37 | — | — | — | — | — | — | — | 5:35 | — | — | — | — | — | — | 5:35 |
 | — | — | — | — | 7:40 | — | — | — | — | — | — | — | 7:42 | — | — | — | — | — | — | — | 7:43 | — | — | 7:44 |
— | — | — | — | — | — | — | — | — | — | 1 | 2 | — | — | 1 | 1 | 4 | 3 | — | — | — | — | — | — | |
Temp °C | 7 | 8 | 11 | 14 | 14 | 13 | 11 | 9 | 8 | 10 | 10 | 9 | 10 | 9 | 9 | 8 | 8 | 7 | 7 | 10 | 12 | 11 | 9 | 7 |
3 | 2 | 6 | 10 | 11 | 10 | 6 | 4 | 4 | 5 | 5 | 5 | 6 | 6 | 7 | 4 | 2 | 1 | 0 | 5 | 7 | 6 | 3 | 1 | |
Swell 1 Height (m) Direction Period (s) | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 9 | ENE 9 |
 kJ | 262 | 211 | 168 | 164 | 160 | 127 | 125 | 125 | 96 | 96 | 96 | 96 | 99 | 99 | 127 | 101 | 99 | 94 | 92 | 88 | 88 | 112 | 185 | 243 |
Swell 2 Height (m) Direction Period (s) | S 12 | S 12 | S 12 | NNW 3 | N 3 | — | — | — | — | — | — | S 6 | S 6 | SW 5 | SSE 3 | SSE 4 | S 4 | S 4 | S 5 | S 6 | S 6 | N 5 | N 5 | NNE 4 |
| kJ | 3 | 3 | 3 | 2 | 1 | — | — | — | — | — | — | 1 | 1 | 1 | 2 | 3 | 1 | 2 | 2 | 3 | 1 | 12 | 11 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | — | S 12 | — | NNW 3 | — | — | — | — | — | — | — | — | SW 5 | — | — | — | — | — | SSW 6 | S 6 | S 9 | N 4 |
| kJ | — | — | — | 3 | — | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | 8 | 1 | 6 | 6 |
Wind waves Height (m) Direction Period (s) | — | NW 3 | NNW 3 | — | SW 4 | SW 4 | SSW 5 | — | SW 2 | — | — | S 3 | S 3 | SSE 3 | — | — | — | NW 3 | NNW 4 | N 4 | N 5 | — | N 5 | WNW 3 |
| kJ | — | 2 | 2 | — | 7 | 12 | 2 | — | 1 | — | — | 2 | 3 | 1 | — | — | — | 2 | 16 | 18 | 15 | — | 11 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 39 | 49 | 9 | 1 | 0 | 2 | 1 | 2 | 2 | 2 | 1 | 52 | 59 | 1 | 1 | 32 | 49 | 55 | 238 | 49 | 1 | 9 | 1 | 1 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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