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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 14 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
9.8° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 12PM is: 0.2m 10s primary swell from a East direction and 0.2m 7s secondary swell from a East direction (forecast issued at 07:00am May 14). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (14 May) | 2.5ft (0.7m) | 4s |
| Afternoon (14 May) | 0.5ft (0.2m) | 10s |
| Evening (14 May) | 3ft (0.9m) | 6s |
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 11mm), heaviest on Thu night. Warm (max 21°C on Sat afternoon, min 9°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Thursday 14 | Friday 15 | Saturday 16 | Sun 17 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
SSE 5 | SE 4 | E 10 | E 10 | E 10 | E 5 | E 6 | E 6 | E 7 | E 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | |
14 | 17 | 8 | 8 | 8 | 45 | 73 | 98 | 86 | 148 | 363 | 369 | 386 | 370 | 308 | 265 | 216 | 169 | 138 | 108 | 78 | 74 | 54 | 37 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross | cross-off | cross-off | cross-off | glassy | on | on | on | glassy | off | off | off | off | cross-off | cross-on | cross-on | on | on | on | on | on | on | on | |
High Tide | 9:53AM2.77m | 10:09PM3.11m | 10:43AM2.85m | 10:57PM3.28m | 11:34AM2.91m | 11:45PM3.42m | ||||||||||||||||||
Low Tide | 3:39AM0.10m | 3:54PM0.22m | 4:30AM-0.09m | 4:42PM0.15m | 5:20AM-0.26m | 5:30PM0.09m | ||||||||||||||||||
 |  | |  |  |  |  |  | |  | | | | | |  | | | | | | | | | |
 | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | 5:20 |
 | — | — | — | — | 7:54 | — | — | — | — | — | — | — | 7:55 | — | — | — | — | — | — | — | 7:57 | — | — | 7:58 |
— | — | — | — | 1 | 9 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 13 | 14 | 15 | 14 | 13 | 12 | 11 | 10 | 10 | 11 | 12 | 11 | 10 | 9 | 9 | 10 | 10 | 11 | 17 | 21 | 21 | 15 | 14 | 14 |
8 | 10 | 10 | 9 | 10 | 12 | 10 | 8 | 8 | 10 | 10 | 8 | 6 | 5 | 7 | 8 | 7 | 8 | 14 | 17 | 16 | 10 | 9 | 9 | |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 10 | E 10 | E 5 | E 6 | E 6 | E 7 | ENE 6 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 |
 kJ | 4 | 4 | 4 | 8 | 8 | 45 | 73 | 98 | 86 | 66 | 363 | 369 | 386 | 370 | 308 | 265 | 216 | 169 | 138 | 108 | 78 | 74 | 54 | 37 |
Swell 2 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | — | — | E 10 | E 10 | S 6 | E 9 | E 10 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 8 | S 8 | S 8 | — | — | — | SE 8 | — |
| kJ | 8 | 8 | 8 | — | — | 8 | 8 | 3 | 43 | 148 | 16 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | — | — | — | 3 | — |
Swell 3 Height (m) Direction Period (s) | — | — | E 8 | — | — | — | S 6 | S 6 | S 7 | E 5 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | 1 | — | — | — | 3 | 7 | 4 | 15 | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 5 | SE 4 | ESE 4 | ESE 6 | E 6 | ESE 6 | — | — | — | — | — | — | ENE 10 | — | — | — | — | — | SW 2 | SSW 2 | S 3 | SSW 3 | SSW 3 | SSW 3 |
| kJ | 14 | 17 | 13 | 47 | 64 | 77 | — | — | — | — | — | — | 140 | — | — | — | — | — | 1 | 1 | 8 | 7 | 7 | 7 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 295 | 261 | 124 | 124 | 102 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 81 | 6 | 6 |
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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