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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 31 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
13.6° C
(Which is 1.6°C warmer than normal for this time of year)How big are the waves at Green Harbor today (31 May):
- Morning surf: Morning surf (31 May, local time) - 5ft (1.6m), 9s period with ENE swell.
- Afternoon surf: Afternoon surf (31 May, local time) - 4.5ft (1.4m), 9s period with ENE swell.
- Evening surf: Evening surf (31 May, local time) - 3.5ft (1.1m), 8s period with ENE swell.
The current surf forecast for Green Harbor at 7PM is: 1.2m 9s primary swell from a East-northeast direction and 0.4m 3s secondary swell from a Southwest direction (forecast issued at 01:00pm May 31). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (31 May) | 5ft (1.6m) | 9s |
| Afternoon (31 May) | 4.5ft (1.4m) | 9s |
| Evening (31 May) | 3.5ft (1.1m) | 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 6mm), mostly falling on Sun afternoon. Very mild (max 18°C on Tue afternoon, min 9°C on Mon afternoon). Mainly fresh winds. | ||||||||||||||||||||||||
Sun 31 | Monday 1 | Tuesday 2 | Wed 3 | |||||||||||||||||||||
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 | ENE 9 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | |
336 | 281 | 227 | 184 | 169 | 140 | 115 | 112 | 176 | 87 | 140 | 144 | 119 | 119 | 96 | 103 | 111 | 106 | 82 | 64 | 64 | 47 | 46 | 46 | |
Wind (km/h) | ||||||||||||||||||||||||
cross | off | glassy | cross-on | on | cross-on | cross | cross-off | off | off | off | cross-off | glassy | cross | glassy | glassy | glassy | cross-off | cross-on | on | on | cross-on | cross | cross-off | |
High Tide | 12:29PM2.50m | 00:30AM2.87m | 1:05PM2.47m | 1:07AM2.85m | 1:43PM2.45m | 1:45AM2.83m | ||||||||||||||||||
Low Tide | 6:15PM0.54m | 6:51AM0.20m | 6:53PM0.56m | 7:29AM0.22m | 7:32PM0.58m | |||||||||||||||||||
 |  |  | |  |  | |  | | | | | | | | | | | | |  | |  | | |
 | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:07 | — |
 | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — | — | — | — | — | — | — | 8:12 | — | — | — | 8:13 |
— | — | 2 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 16 | 16 | 13 | 12 | 12 | 12 | 10 | 10 | 11 | 9 | 10 | 10 | 10 | 10 | 11 | 11 | 15 | 17 | 18 | 15 | 14 | 14 | 14 | 15 |
13 | 13 | 12 | 9 | 10 | 9 | 7 | 7 | 7 | 2 | 6 | 7 | 8 | 7 | 8 | 9 | 13 | 13 | 14 | 11 | 10 | 12 | 12 | 13 | |
Swell 1 Height (m) Direction Period (s) | ENE 9 | ENE 9 | ENE 9 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | SSW 5 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 |
 kJ | 336 | 281 | 227 | 184 | 169 | 140 | 115 | 112 | 3 | 87 | 140 | 144 | 119 | 119 | 96 | 103 | 111 | 106 | 82 | 64 | 64 | 47 | 46 | 46 |
Swell 2 Height (m) Direction Period (s) | S 13 | S 13 | — | — | — | — | SSW 3 | SSW 4 | — | — | S 6 | NE 8 | SW 6 | S 6 | S 5 | S 5 | — | S 9 | SE 9 | E 9 | E 9 | — | E 9 | E 9 |
| kJ | 4 | 4 | — | — | — | — | 1 | 2 | — | — | 1 | 18 | 1 | 1 | 1 | 1 | — | 2 | 3 | 2 | 2 | — | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | SW 6 | — | — | — | — | — | — | E 9 | — | E 8 | E 9 | SE 8 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | — | — | 2 | — | 1 | 2 | 2 | — |
Wind waves Height (m) Direction Period (s) | — | — | SW 3 | SW 3 | SW 3 | — | — | — | ENE 8 | ENE 5 | ENE 5 | — | — | — | — | — | — | — | SSE 2 | S 2 | SSW 2 | — | — | — |
| kJ | — | — | 4 | 2 | 2 | — | — | — | 176 | 34 | 27 | — | — | — | — | — | — | — | 1 | 1 | 1 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 60 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 2 | 15 | 52 | 54 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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