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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 am Sunday 17 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
10.2° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 7AM is: 0.5m 8s primary swell from a East direction and 0.4m 8s secondary swell from a East direction, 0.2m 3s secondary swell from a West-southwest direction (forecast issued at 01:00am May 17). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 May) | 1.5ft (0.4m) | 8s |
| Afternoon (17 May) | 1ft (0.3m) | 8s |
| Evening (17 May) | 2.5ft (0.7m) | 5s |
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 7mm), mostly falling on Mon night. Warm (max 32°C on Tue afternoon, min 14°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Sunday 17 | Monday 18 | Tuesday 19 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | SSW 5 | ESE 8 | ESE 8 | ESE 8 | NE 4 | NE 4 | NE 4 | NE 4 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | S 3 | SSW 4 | ESE 10 | |
35 | 35 | 22 | 21 | 13 | 25 | 19 | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 11 | 10 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
on | on | on | cross-on | cross-on | cross | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | on | on | on | on | on | on | on | |
High Tide | 11:45PM3.42m | 12:24PM2.95m | 00:35AM3.51m | 1:15PM2.96m | 1:27AM3.53m | 2:08PM2.95m | ||||||||||||||||||
Low Tide | 6:11AM-0.37m | 6:20PM0.04m | 7:02AM-0.43m | 7:11PM0.02m | 7:54AM-0.42m | 8:04PM0.03m | ||||||||||||||||||
 |  |  | | | |  |  | | | | | | | |  | | |  | | | | | | |
 | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — |
— | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 5 | 1 | — | — | — | — | — | — | |
Temp °C | 15 | 15 | 18 | 24 | 28 | 28 | 25 | 22 | 17 | 15 | 14 | 15 | 17 | 18 | 15 | 16 | 16 | 17 | 19 | 28 | 32 | 30 | 23 | 21 |
10 | 12 | 17 | 22 | 25 | 25 | 24 | 20 | 14 | 11 | 10 | 11 | 12 | 14 | 12 | 14 | 14 | 16 | 18 | 27 | 29 | 27 | 20 | 18 | |
Swell 1 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | NE 4 | NE 4 | NE 4 | NE 4 | NE 4 | SE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 |
 kJ | 35 | 35 | 22 | 21 | 13 | 13 | 11 | 12 | 6 | 6 | 3 | 4 | 4 | 4 | 3 | 3 | 1 | 1 | 1 | 9 | 9 | 9 | 7 | 9 |
Swell 2 Height (m) Direction Period (s) | SE 5 | ESE 8 | E 8 | S 6 | E 8 | ESE 8 | NNW 3 | NNW 3 | S 7 | S 7 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 9 | NE 4 | ESE 9 | ESE 9 | ESE 10 | SE 4 | E 13 | E 16 | E 16 | E 16 |
| kJ | 1 | 7 | 21 | 7 | 12 | 25 | 1 | 1 | 10 | 9 | 6 | 6 | 6 | 6 | 8 | 1 | 8 | 8 | 9 | 1 | 3 | 5 | 5 | 5 |
Swell 3 Height (m) Direction Period (s) | — | — | ENE 8 | E 8 | S 8 | S 8 | SE 5 | NNW 3 | — | — | S 7 | S 7 | S 7 | — | E 13 | ESE 9 | NE 4 | NE 4 | E 13 | E 13 | — | — | — | — |
| kJ | — | — | 7 | 12 | 1 | 1 | 1 | 1 | — | — | 4 | 4 | 4 | — | 3 | 8 | 1 | 1 | 3 | 3 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSW 3 | SW 3 | WSW 3 | — | — | — | SSW 5 | — | NNE 3 | NE 3 | ESE 3 | ESE 3 | ESE 3 | SE 3 | SE 3 | — | SSW 2 | — | SSW 2 | SW 2 | SSW 3 | S 3 | SSW 4 | SSW 3 |
| kJ | 8 | 3 | 1 | — | — | — | 19 | — | 1 | 3 | 2 | 2 | 2 | 2 | 4 | — | 1 | — | 1 | 1 | 2 | 11 | 10 | 8 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 6 | 81 | 2 | 57 | 54 | 95 | 57 | 72 | 72 | 83 | 272 | 276 | 515 | 515 | 515 | 515 | 525 | 131 | 131 | 337 | 1225 | 131 | 81 | 333 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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