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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 am Wednesday 29 Apr 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
7.9° C
(Which is slightly warmer than usual)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 8AM is: 1.9m 10s primary swell from a East-northeast direction (forecast issued at 01:00am April 29). An open ocean swell of 0.1m 13s is not directed at the surf break, a second open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be offshore and the swell rating is 2.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (29 Apr) | 6ft (1.8m) | 10s |
| Afternoon (29 Apr) | 5ft (1.6m) | 10s |
| Evening (29 Apr) | 5ft (1.5m) | 10s |
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 3mm), mostly falling on Wed night. Very mild (max 13°C on Fri afternoon, min 6°C on Wed morning). Wind will be generally light. | ||||||||||||||||||||||||
Wednesday 29 | Thursday 30 | Friday 1 | ||||||||||||||||||||||
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 | 5 PM | 8 PM | 11 PM | |
Swell Height Map |    |    |    | |||||||||||||||||||||
ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | |
540 | 671 | 671 | 591 | 512 | 432 | 423 | 422 | 504 | 452 | 452 | 386 | 371 | 363 | 314 | 307 | 257 | 241 | 198 | 194 | 189 | 189 | 189 | 157 | |
Wind (km/h) | ||||||||||||||||||||||||
cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross | cross | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross-on | |
High Tide | 10:47AM2.81m | 11:04PM2.99m | 11:32AM2.76m | 11:43PM2.98m | 12:13PM2.70m | |||||||||||||||||||
Low Tide | 4:30AM0.11m | 4:45PM0.22m | 5:17AM0.08m | 5:27PM0.29m | 5:58AM0.07m | 6:05PM0.35m | ||||||||||||||||||
 | |  |  | | | | |  | | |  | | | | |  |  |  | | | | | | |
 | — | 5:41 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — | — | 5:39 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:37 | — | — | — | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:40 | — | — |
— | — | — | — | — | — | — | — | 1 | 1 | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | |
Temp °C | 6 | 6 | 6 | 6 | 7 | 7 | 7 | 8 | 9 | 10 | 10 | 11 | 12 | 12 | 11 | 11 | 10 | 8 | 9 | 12 | 12 | 13 | 11 | 9 |
2 | 1 | 1 | 1 | 3 | 4 | 5 | 5 | 6 | 8 | 8 | 10 | 10 | 10 | 10 | 9 | 7 | 4 | 3 | 8 | 7 | 8 | 6 | 4 | |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | ENE 10 | ENE 10 | ENE 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 10 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 |
 kJ | 540 | 671 | 671 | 591 | 512 | 432 | 423 | 422 | 504 | 452 | 452 | 386 | 371 | 363 | 314 | 307 | 257 | 241 | 198 | 194 | 189 | 189 | 189 | 157 |
Swell 2 Height (m) Direction Period (s) | S 13 | — | S 13 | — | — | S 12 | SE 12 | — | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | SE 12 | S 12 | S 12 | S 12 | S 12 | S 12 | SW 4 | NNW 3 | SSW 5 | SSW 5 | SSW 5 |
| kJ | 3 | — | 3 | — | — | 3 | 6 | — | 6 | 6 | 6 | 5 | 5 | 6 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 2 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | S 12 | S 12 | NNW 3 | S 5 | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | 1 | — |
Wind waves Height (m) Direction Period (s) | — | — | N 4 | NE 10 | — | — | — | SE 3 | SE 4 | — | — | SSE 4 | — | — | — | — | — | — | WNW 2 | NW 2 | SW 4 | SW 5 | NW 3 | NW 3 |
| kJ | — | — | 7 | 225 | — | — | — | 5 | 9 | — | — | 10 | — | — | — | — | — | — | 1 | 1 | 6 | 19 | 3 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 49 | 49 | 0 | 0 | 0 | 0 | 0 | 0 | 39 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 32 | 49 | 1 | 1 | 9 | 39 | 9 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
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