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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 1 pm Saturday 16 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
10.5° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 9PM is: 0.6m 9s primary swell from a East direction and 0.6m 3s secondary swell from a South-southwest direction (forecast issued at 01:00pm May 16). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (16 May) | 3.5ft (1.0m) | 9s |
| Afternoon (16 May) | 2.5ft (0.8m) | 9s |
| Evening (16 May) | 2ft (0.6m) | 9s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastMostly dry. Warm (max 28°C on Sun afternoon, min 14°C on Mon morning). Winds decreasing (fresh winds from the SW on Sat night, light winds from the W by Sun afternoon). | ||||||||||||||||||||||||
Sat 16 | Sunday 17 | Monday 18 | Tue 19 | |||||||||||||||||||||
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 | 5 AM | 8 AM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | ESE 8 | E 8 | ESE 8 | SE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | |
141 | 110 | 79 | 78 | 55 | 35 | 35 | 22 | 22 | 12 | 13 | 16 | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | on | on | on | on | cross-on | cross-on | cross-on | cross-off | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross | cross-on | on | on | on | |
High Tide | 11:34AM2.91m | 11:45PM3.42m | 12:24PM2.95m | 00:35AM3.51m | 1:15PM2.96m | 1:27AM3.53m | ||||||||||||||||||
Low Tide | 5:30PM0.09m | 6:11AM-0.37m | 6:20PM0.04m | 7:02AM-0.43m | 7:11PM0.02m | 7:54AM-0.42m | ||||||||||||||||||
 | | |  | |  |  | | | | | | | | |  |  | | | | | | | | |
 | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — |
 | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | 8:00 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 18 | 23 | 22 | 18 | 15 | 16 | 15 | 18 | 23 | 28 | 27 | 26 | 22 | 17 | 15 | 14 | 14 | 15 | 17 | 15 | 14 | 16 | 17 | 19 |
15 | 19 | 17 | 13 | 9 | 10 | 11 | 16 | 22 | 27 | 25 | 23 | 19 | 14 | 12 | 10 | 10 | 11 | 12 | 11 | 12 | 14 | 16 | 18 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NNE 4 | NNE 4 | NNE 4 | ESE 9 | ESE 3 | ESE 4 | SSE 3 | ESE 10 |
 kJ | 141 | 110 | 79 | 78 | 55 | 35 | 35 | 22 | 22 | 11 | 13 | 12 | 12 | 6 | 6 | 6 | 1 | 1 | 1 | 8 | 1 | 1 | 1 | 9 |
Swell 2 Height (m) Direction Period (s) | S 9 | — | — | — | — | S 6 | ESE 8 | E 8 | SSW 6 | ESE 8 | S 4 | SE 8 | — | S 7 | S 7 | NNE 4 | ESE 8 | ESE 8 | ESE 8 | NE 4 | ESE 9 | ESE 9 | ESE 9 | E 13 |
| kJ | 6 | — | — | — | — | 1 | 7 | 22 | 13 | 7 | 4 | 16 | — | 10 | 9 | 3 | 6 | 6 | 6 | 1 | 8 | 8 | 8 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | E 8 | E 8 | S 6 | S 8 | S 8 | — | N 3 | S 7 | S 7 | S 7 | — | E 13 | NE 4 | — | — | — |
| kJ | — | — | — | — | — | — | — | — | 12 | 12 | 3 | 1 | 1 | — | 1 | 4 | 4 | 4 | — | 3 | 1 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | SSW 3 | S 3 | SSW 3 | SSW 3 | SW 3 | SW 3 | WSW 3 | — | — | — | — | — | NE 2 | ENE 3 | ENE 3 | ESE 4 | ESE 3 | SE 3 | SE 3 | — | SSW 2 | SW 2 | SSW 2 |
| kJ | — | 2 | 8 | 9 | 10 | 9 | 6 | 1 | — | — | — | — | — | 2 | 4 | 5 | 2 | 2 | 2 | 3 | — | 1 | 1 | 1 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 2 | 2 | 6 | 959 | 543 | 85 | 81 | 43 | 57 | 57 | 94 | 98 | 72 | 72 | 85 | 275 | 276 | 515 | 106 | 106 | 515 | 151 | 106 | 95 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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