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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 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 7PM is: 0.3m 8s primary swell from a East direction and 0.1m 4s secondary swell from a Southeast direction (forecast issued at 01:00pm May 17). The wind direction is predicted to be cross-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) | 1ft (0.3m) | 8s |
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 2mm), mostly falling on Mon night. Warm (max 33°C on Tue afternoon, min 15°C on Mon morning). Wind will be generally light. | ||||||||||||||||||||||||
Sun 17 | Monday 18 | Tuesday 19 | Wed 20 | |||||||||||||||||||||
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 |    |    |    |    | ||||||||||||||||||||
ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NE 4 | ESE 9 | E 9 | ESE 9 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | S 4 | SSW 4 | SSW 4 | ESE 9 | ESE 9 | ESE 10 | |
22 | 13 | 13 | 11 | 12 | 6 | 6 | 6 | 6 | 6 | 6 | 7 | 6 | 8 | 8 | 9 | 9 | 9 | 12 | 13 | 9 | 9 | 8 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-on | cross-on | cross-on | cross-on | cross-off | off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | on | on | on | on | on | on | on | on | on | on | on | on | |
High Tide | 12:24PM2.95m | 00:35AM3.51m | 1:15PM2.96m | 1:27AM3.53m | 2:08PM2.95m | 2:21AM3.48m | ||||||||||||||||||
Low Tide | 6:20PM0.04m | 7:02AM-0.43m | 7:11PM0.02m | 7:54AM-0.42m | 8:04PM0.03m | |||||||||||||||||||
 | | |  |  | | | | |  | | |  | | | | | | |  |  | | | | |
 | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:18 | — | — | — | — | — | — | — | 5:16 | — |
 | — | — | 7:58 | — | — | — | — | — | — | — | 7:59 | — | — | — | — | — | — | — | — | 8:00 | — | — | — | 8:00 |
— | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 24 | 28 | 30 | 25 | 23 | 18 | 16 | 15 | 17 | 19 | 22 | 20 | 19 | 19 | 21 | 22 | 29 | 33 | 31 | 25 | 25 | 24 | 23 | 23 |
22 | 25 | 27 | 24 | 22 | 15 | 13 | 11 | 13 | 14 | 20 | 18 | 17 | 17 | 20 | 21 | 28 | 30 | 28 | 23 | 23 | 23 | 22 | 22 | |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | NE 4 | SE 4 | NE 4 | ESE 4 | ESE 9 | ESE 10 | ESE 10 | ESE 10 | ESE 10 | E 10 | ESE 10 | ESE 9 | ESE 9 | ESE 10 |
 kJ | 22 | 13 | 13 | 11 | 12 | 6 | 6 | 6 | 6 | 6 | 4 | 3 | 3 | 1 | 8 | 9 | 9 | 9 | 9 | 7 | 9 | 9 | 8 | 9 |
Swell 2 Height (m) Direction Period (s) | SSW 6 | E 8 | — | SE 4 | NNW 3 | S 5 | S 7 | S 7 | S 7 | — | ESE 8 | NE 4 | E 9 | ESE 9 | — | — | — | E 13 | E 16 | E 16 | E 16 | E 16 | E 16 | E 12 |
| kJ | 15 | 12 | — | 1 | 1 | 2 | 9 | 4 | 4 | — | 6 | 3 | 6 | 8 | — | — | — | 3 | 5 | 5 | 5 | 5 | 5 | 3 |
Swell 3 Height (m) Direction Period (s) | E 8 | S 8 | — | — | S 8 | S 7 | ESE 8 | — | — | S 7 | — | ESE 9 | E 13 | NE 4 | NE 4 | SE 5 | E 13 | — | — | — | — | E 12 | — | E 12 |
| kJ | 12 | 1 | — | — | 1 | 4 | 6 | — | — | 4 | — | 7 | 3 | 1 | 1 | 1 | 3 | — | — | — | — | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NNE 3 | NE 3 | ENE 3 | ENE 4 | E 4 | SE 3 | SSW 2 | S 4 | SSW 3 | SW 2 | SW 2 | SW 3 | SSW 3 | S 4 | SSW 4 | SSW 4 | SW 3 | SW 3 | SW 3 |
| kJ | — | — | — | — | — | 2 | 3 | 5 | 5 | 7 | 4 | 1 | 5 | 1 | 1 | 1 | 2 | 3 | 12 | 13 | 8 | 5 | 3 | 3 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 57 | 81 | 94 | 57 | 72 | 72 | 74 | 83 | 515 | 515 | 515 | 515 | 462 | 91 | 91 | 91 | 467 | 95 | 131 | 81 | 81 | 92 | 92 | 124 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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