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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 Saturday 30 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
13.2° C
(Which is 1.3°C warmer than normal for this time of year)How big are the waves at Green Harbor today (30 May):
- Morning surf: Morning surf (30 May, local time) - 4.5ft (1.3m), 6s period with E swell.
- Afternoon surf: Afternoon surf (30 May, local time) - 11ft (3.5m), 8s period with NE swell.
- Evening surf: Evening surf (30 May, local time) - 10ft (3.0m), 8s period with NE swell.
The current surf forecast for Green Harbor at 6PM is: 3.5m 9s primary swell from a Northeast direction (forecast issued at 01:00pm May 30). An open ocean swell of 0.2m 7s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (30 May) | 4.5ft (1.3m) | 6s |
| Afternoon (30 May) | 11ft (3.5m) | 8s |
| Evening (30 May) | 10ft (3.0m) | 8s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Short Range ForecastModerate rain (total 10mm), heaviest on Sat afternoon. Very mild (max 16°C on Sun afternoon, min 8°C on Sat afternoon). Winds decreasing (near gales from the NE on Sat afternoon, calm by Sun night). | ||||||||||||||||||||||||
Sat 30 | Sunday 31 | Monday 1 | Tue 2 | |||||||||||||||||||||
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 7 | NE 8 | NE 9 | NE 8 | NE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | |
516 | 1944 | 1898 | 1249 | 964 | 682 | 444 | 379 | 328 | 268 | 217 | 180 | 144 | 115 | 109 | 87 | 87 | 181 | 211 | 112 | 90 | 112 | 99 | 78 | |
Wind (km/h) | ||||||||||||||||||||||||
off | off | off | off | cross-off | cross-off | cross-off | cross | cross | cross-off | cross-on | glassy | cross-on | cross-on | cross | cross-off | off | off | off | cross-off | glassy | glassy | cross-on | cross-on | |
High Tide | 11:50AM2.54m | 11:52PM2.90m | 12:29PM2.50m | 00:30AM2.87m | 1:05PM2.47m | 1:07AM2.85m | ||||||||||||||||||
Low Tide | 5:36PM0.51m | 6:13AM0.18m | 6:15PM0.54m | 6:51AM0.20m | 6:53PM0.56m | 7:29AM0.22m | ||||||||||||||||||
 | | |  |  |  | |  |  | | | |  |  | | | | | | | | | | | |
 | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — | — | — | — | — | — | — | 5:09 | — |
 | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:09 | — | — | — | — | — | — | — | 8:10 | — | — | — | 8:12 |
2 | 3 | 1 | — | — | — | — | — | — | — | 1 | 3 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 10 | 8 | 9 | 10 | 10 | 9 | 8 | 10 | 15 | 16 | 15 | 12 | 14 | 12 | 11 | 12 | 11 | 10 | 11 | 10 | 11 | 11 | 11 | 12 |
0 | -4 | -1 | 1 | 3 | 4 | 3 | 6 | 12 | 13 | 13 | 11 | 11 | 9 | 8 | 8 | 6 | 5 | 7 | 8 | 9 | 9 | 8 | 9 | |
Swell 1 Height (m) Direction Period (s) | SSW 7 | SSW 7 | S 7 | — | — | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | SSW 5 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
 kJ | 15 | 9 | 3 | — | — | 682 | 444 | 379 | 328 | 268 | 217 | 180 | 144 | 115 | 109 | 87 | 87 | 3 | 140 | 112 | 90 | 112 | 99 | 78 |
Swell 2 Height (m) Direction Period (s) | — | — | — | — | — | — | — | S 13 | S 13 | S 14 | — | SW 4 | — | — | — | SW 4 | NW 3 | — | — | SSW 6 | ENE 5 | NNE 4 | NNE 4 | NNE 4 |
| kJ | — | — | — | — | — | — | — | 4 | 3 | 4 | — | 2 | — | — | — | 4 | 1 | — | — | 3 | 19 | 1 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SW 6 | NNE 4 | S 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | ENE 7 | NE 8 | NE 9 | NE 8 | NE 8 | — | NNE 8 | — | — | — | SW 3 | — | — | WSW 2 | — | WNW 2 | N 3 | ENE 8 | ENE 8 | ENE 5 | — | — | — | — |
| kJ | 516 | 1944 | 1898 | 1249 | 964 | — | 193 | — | — | — | 2 | — | — | 1 | — | 1 | 1 | 181 | 211 | 19 | — | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 96 | 655 | 655 | 888 | 49 | 32 | 32 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 60 | 96 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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