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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 pm 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 2AM is: 1.2m 10s primary swell from a East-northeast direction (forecast issued at 07:00pm May 15). An open ocean swell of 0.2m 8s is not directed at the surf break. 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 27°C on Sun afternoon, min 10°C on Fri night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon). | ||||||||||||||||||||||||
Fri 15 | Saturday 16 | Sunday 17 | Mon 18 | |||||||||||||||||||||
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 | 11 AM | 2 PM | |
Swell Height Map |    |    |    |    | ||||||||||||||||||||
ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | SE 8 | |
386 | 342 | 335 | 276 | 212 | 173 | 141 | 110 | 79 | 78 | 55 | 35 | 35 | 24 | 23 | 12 | 13 | 12 | 11 | 6 | 6 | 6 | 6 | 9 | |
Wind (km/h) | ||||||||||||||||||||||||
off | cross-off | cross-off | on | on | on | on | on | on | on | on | on | on | cross-on | cross | cross-on | glassy | on | cross-off | off | cross-off | cross-off | cross-off | cross-off | |
High Tide | 10:57PM3.28m | 11:34AM2.91m | 11:45PM3.42m | 12:24PM2.95m | 00:35AM3.51m | 1:15PM2.96m | ||||||||||||||||||
Low Tide | 4:42PM0.15m | 5:20AM-0.26m | 5:30PM0.09m | 6:11AM-0.37m | 6:20PM0.04m | 7:02AM-0.43m | ||||||||||||||||||
 |  |  | | |  | | | | | | | | |  | | | | | | | | | | |
 | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:20 | — | — | — | — | — | — | — | 5:18 | — | — | — |
 | 7:55 | — | — | — | — | — | — | — | 7:57 | — | — | — | — | — | — | — | 7:58 | — | — | — | — | — | — | 7:59 |
— | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 9 | 10 | 10 | 11 | 11 | 12 | 18 | 21 | 20 | 16 | 14 | 15 | 15 | 18 | 23 | 25 | 27 | 23 | 22 | 18 | 15 | 15 | 16 | 18 |
6 | 7 | 8 | 9 | 8 | 8 | 14 | 16 | 14 | 10 | 8 | 10 | 11 | 16 | 20 | 23 | 26 | 21 | 20 | 15 | 12 | 12 | 12 | 13 | |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 9 | E 9 | ENE 9 | ENE 9 | E 9 | E 9 | E 9 | E 8 | E 8 | E 8 | E 8 | E 8 | ESE 8 | ESE 8 | E 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 | ESE 8 |
 kJ | 386 | 342 | 335 | 276 | 212 | 173 | 141 | 110 | 79 | 78 | 55 | 35 | 35 | 22 | 21 | 12 | 13 | 12 | 11 | 6 | 6 | 6 | 6 | 6 |
Swell 2 Height (m) Direction Period (s) | S 9 | S 8 | S 8 | S 8 | S 9 | S 9 | S 9 | — | — | — | — | — | SE 6 | E 8 | SE 8 | — | S 8 | S 6 | SE 4 | S 4 | S 4 | S 7 | S 7 | SE 8 |
| kJ | 6 | 6 | 6 | 6 | 6 | 6 | 6 | — | — | — | — | — | 1 | 22 | 23 | — | 1 | 1 | 1 | 3 | 2 | 4 | 4 | 9 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 8 | E 8 | E 8 | — | S 8 | S 8 | S 7 | S 7 | S 8 | — | E 14 |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | 24 | 12 | 12 | — | 1 | 4 | 4 | 4 | 5 | — | 4 |
Wind waves Height (m) Direction Period (s) | — | — | NNE 3 | — | — | — | — | SSW 3 | S 4 | SSW 4 | SSW 3 | SSW 3 | SW 3 | WSW 2 | — | SSW 4 | — | — | — | NNE 3 | NE 3 | NE 4 | ENE 4 | ENE 4 |
| kJ | — | — | 4 | — | — | — | — | 2 | 12 | 10 | 8 | 8 | 3 | 1 | — | 3 | — | — | — | 1 | 4 | 6 | 5 | 4 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 6 | 101 | 1198 | 85 | 81 | 43 | 2 | 52 | 94 | 94 | 72 | 74 | 73 | 109 | 106 | 515 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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