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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 15 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 normal for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 3PM is: 1.4m 10s primary swell from a East-northeast direction (forecast issued at 07:00am May 15). An open ocean swell of 0.1m 9s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 May) | 2.5ft (0.8m) | 9s |
| Afternoon (15 May) | 4.5ft (1.4m) | 10s |
| Evening (15 May) | 4.5ft (1.4m) | 10s |
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 27°C on Sun afternoon, min 9°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 7 | E 9 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | E 9 | E 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | E 8 | E 8 | ESE 8 | |
74 | 110 | 314 | 384 | 386 | 356 | 335 | 276 | 220 | 173 | 173 | 110 | 79 | 78 | 55 | 35 | 35 | 22 | 21 | 22 | 13 | 11 | 11 | 6 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross-on | on | on | cross-on | cross-on | on | on | on | on | cross-on | cross | cross | cross-on | on | cross-off | off | |
High Tide | 10:43AM2.85m | 10:57PM3.28m | 11:34AM2.91m | 11:45PM3.42m | 12:24PM2.95m | 00:35AM3.51m | ||||||||||||||||||
Low Tide | 4:30AM-0.09m | 4:42PM0.15m | 5:20AM-0.26m | 5:30PM0.09m | 6:11AM-0.37m | 6:20PM0.04m | ||||||||||||||||||
 |  | | | |  | |  | |  | | | | | | | |  | | | | | | | |
 | 5:22 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | 5:18 |
 | — | — | — | — | 7:55 | — | — | — | — | — | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | 7:59 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 11 | 11 | 11 | 10 | 9 | 9 | 10 | 10 | 12 | 18 | 21 | 21 | 16 | 14 | 14 | 14 | 17 | 23 | 25 | 27 | 24 | 22 | 17 |
8 | 9 | 9 | 8 | 7 | 6 | 7 | 8 | 7 | 8 | 15 | 17 | 15 | 11 | 9 | 9 | 10 | 15 | 20 | 22 | 25 | 23 | 19 | 14 | |
Swell 1 Height (m) Direction Period (s) | E 7 | E 9 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 9 | E 9 | E 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | E 8 | E 8 | ESE 8 |
 kJ | 74 | 110 | 314 | 384 | 386 | 356 | 335 | 276 | 220 | 173 | 173 | 110 | 79 | 78 | 55 | 35 | 35 | 22 | 21 | 22 | 13 | 11 | 11 | 6 |
Swell 2 Height (m) Direction Period (s) | E 9 | ENE 7 | S 9 | S 9 | S 9 | S 8 | S 8 | S 8 | S 9 | S 9 | S 9 | — | — | — | — | — | S 9 | — | SE 8 | S 7 | S 7 | SE 4 | SE 4 | S 4 |
| kJ | 43 | 62 | 16 | 2 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | — | — | — | — | — | 1 | — | 21 | 9 | 4 | 1 | 1 | 4 |
Swell 3 Height (m) Direction Period (s) | S 7 | S 10 | — | — | — | — | — | N 4 | — | — | — | — | — | — | — | — | — | SE 8 | E 8 | E 8 | — | S 7 | S 7 | S 7 |
| kJ | 9 | 2 | — | — | — | — | — | 3 | — | — | — | — | — | — | — | — | — | 17 | 12 | 12 | — | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | NE 3 | NNE 5 | — | — | — | SW 2 | SSW 2 | S 3 | SSW 3 | SSW 3 | SSW 3 | SW 3 | WSW 3 | — | — | — | — | N 3 | NNE 3 |
| kJ | — | — | — | — | — | 2 | 7 | — | — | — | 1 | 1 | 5 | 6 | 6 | 7 | 3 | 1 | — | — | — | — | 1 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 0 | 49 | 49 | 0 | 1 | 1 | 1 | 1 | 6 | 81 | 91 | 1198 | 6 | 81 | 81 | 57 | 57 | 85 | 92 | 72 | 74 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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