Surf Forecasts:
How big are the waves at Green Harbor today (27 Sep):
- Afternoon surf: Afternoon surf (27 Sep, local time) - 13ft (4.0m), 10s period with ENE swell.
- Evening surf: Evening surf (27 Sep, local time) - 11ft (3.5m), 9s period with NE swell.
The current surf forecast for Green Harbor at 12AM is: 3.5m 9s primary swell from a East-northeast direction and 0.6m 10s secondary swell from a Southeast direction (forecast issued at 07:00pm September 26). An open ocean swell of 0.2m 9s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Sep) | - | - |
| Afternoon (27 Sep) | 13ft (4.0m) | 10s |
| Evening (27 Sep) | 11ft (3.5m) | 9s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 63mm), heaviest during Sat night. Very mild (max 17°C on Sun morning, min 14°C on Sat night). Winds decreasing (near gales from the NE on Sat night, calm by Mon night). | |||||||||||||||||||
Sat 26 | Sunday 27 | Monday 28 | |||||||||||||||||
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 |  |  |  |  |  |  |  | ||||||||||||
Wave Height (m) Direction Period (s) | ENE 10 | NE 9 | NE 9 | NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 2573 | 2429 | 2060 | 1635 | 1682 | 1716 | 1337 | 1163 | 1014 | 982 | 1031 | 1012 | 954 | 853 | 732 | 629 | 573 | 502 | 477 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | off | off | off | off | cross-off | glassy |
High Tide | 00:04AM2.92m | 12:20PM3.01m | 00:45AM2.94m | 12:59PM3.13m | |||||||||||||||
Low Tide | 5:51PM0.08m | 6:10AM0.12m | 6:33PM-0.05m | 6:49AM0.09m | 7:17PM-0.14m | ||||||||||||||
 |  |  |  | |  | | | | | | | | | | | |  | | |
 | — | — | — | — | 6:33 | — | — | — | — | — | — | — | 6:35 | — | — | — | — | — | — |
 | 6:32 | — | — | — | — | — | — | — | 6:30 | — | — | — | — | — | — | — | 6:30 | — | — |
mm | 3 | 11 | 6 | 3 | 4 | 6 | 4 | 5 | 3 | 2 | 1 | 3 | 5 | 1 | 2 | 1 | 1 | 2 | 1 |
Temp °C | 14 | 14 | 15 | 16 | 16 | 17 | 17 | 16 | 16 | 16 | 16 | 16 | 16 | 16 | 15 | 15 | 16 | 16 | 16 |
Feels °C | 6 | 6 | 6 | 8 | 8 | 11 | 12 | 12 | 12 | 12 | 11 | 11 | 12 | 13 | 11 | 13 | 15 | 16 | 17 |
Swell 1 Height (m) Direction Period (s) | S 10 | SE 10 | SE 10 | SE 11 | SE 11 | SSW 10 | SE 10 | SE 9 | SSW 9 | SSW 8 | S 8 | S 7 | S 7 | NE 9 | NE 9 | E 16 | N 6 | S 7 | E 15 |
| kJ | 18 | 16 | 38 | 72 | 96 | 32 | 34 | 30 | 15 | 13 | 10 | 10 | 17 | 307 | 275 | 5 | 23 | 15 | 4 |
Swell 2 Height (m) Direction Period (s) | ESE 10 | S 10 | S 9 | SSW 10 | SSW 10 | — | SSW 9 | SSW 9 | — | — | SSW 8 | SW 7 | — | S 7 | S 7 | N 6 | S 7 | — | — |
| kJ | 10 | 17 | 7 | 34 | 35 | — | 28 | 27 | — | — | 6 | 2 | — | 8 | 8 | 27 | 8 | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | SSW 10 | — | — | — | — | — | — | — | — | — | — | SE 7 | SW 7 | S 7 | SSW 7 | — | — |
| kJ | — | — | 10 | — | — | — | — | — | — | — | — | — | — | 2 | 2 | 15 | 5 | — | — |
Wind waves Height (m) Direction Period (s) | ENE 10 | NE 9 | NE 9 | NE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 2573 | 2429 | 2060 | 1635 | 1682 | 1716 | 1337 | 1163 | 1014 | 982 | 1031 | 1012 | 954 | 853 | 732 | 629 | 573 | 502 | 477 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 991 | 959 | 945 | 945 | 888 | 742 | 745 | 807 | 438 | 807 | 745 | 745 | 395 | 466 | 94 | 0 | 0 | 0 | 0 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
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