Surf Forecasts:
How big are the waves at Green Harbor today (18 Oct):
- Morning surf: Morning surf (18 Oct, local time) - 2.5ft (0.8m), 6s period with NE swell.
- Afternoon surf: Afternoon surf (18 Oct, local time) - 2ft (0.6m), 5s period with NE swell.
- Evening surf: Evening surf (18 Oct, local time) - 1ft (0.3m), 5s period with NE swell.
The current surf forecast for Green Harbor at 5AM is: 1.0m 6s primary swell from a North-northeast direction and 0.1m 8s secondary swell from a East direction (forecast issued at 01:00am October 18). An open ocean swell of 1.2m 6s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Oct) | 2.5ft (0.8m) | 6s |
| Afternoon (18 Oct) | 2ft (0.6m) | 5s |
| Evening (18 Oct) | 1ft (0.3m) | 5s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 13°C on Tue night, min 7°C on Sun morning). Winds increasing (light winds from the NE on Sun morning, strong winds from the NE by Tue night). | ||||||||||||||||||||||||
Sunday 18 | Monday 19 | Tuesday 20 | ||||||||||||||||||||||
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 |  |  |  |  |  |  |  |  |  | |||||||||||||||
Wave Height (m) Direction Period (s) | E 9 | NNE 6 | NE 6 | NE 5 | NE 5 | NE 5 | NE 5 | NE 5 | E 7 | E 4 | E 10 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 | E 10 | ENE 9 | E 9 | ENE 9 | ENE 8 | ENE 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 2 | 66 | 46 | 34 | 21 | 12 | 3 | 3 | 4 | 10 | 8 | 15 | 26 | 196 | 244 | 361 | 432 | 424 | 494 | 766 | 422 | 826 | 723 | 679 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | off | cross-off | cross-off | cross | cross | cross-off | off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off |
High Tide | 5:27AM2.29m | 5:40PM2.56m | 6:24AM2.28m | 6:39PM2.54m | 7:21AM2.33m | 7:37PM2.56m | ||||||||||||||||||
Low Tide | 11:10PM0.44m | 11:23AM0.73m | 00:06AM0.49m | 12:21PM0.73m | 1:02AM0.49m | 1:19PM0.68m | ||||||||||||||||||
 | |  | | | | | | | | |  |  | |  | | |  | | | | | | | |
 | — | 6:58 | — | — | — | — | — | — | — | 6:58 | — | — | — | — | — | — | — | 7:00 | — | — | — | — | — | — |
 | — | — | — | — | — | 5:55 | — | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:52 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 7 | 7 | 7 | 8 | 8 | 8 | 8 | 9 | 9 | 9 | 9 | 10 | 10 | 10 | 10 | 10 | 11 | 11 | 11 | 11 | 11 | 12 | 13 | 12 |
Feels °C | 2 | 2 | 3 | 5 | 4 | 4 | 4 | 4 | 5 | 6 | 5 | 6 | 5 | 5 | 5 | 4 | 4 | 4 | 4 | 3 | 3 | 4 | 5 | 4 |
Swell 1 Height (m) Direction Period (s) | E 9 | NNE 6 | NE 6 | NE 5 | NE 5 | NE 5 | NE 5 | NE 5 | E 7 | E 4 | E 7 | E 9 | E 9 | S 12 | E 9 | E 10 | S 11 | E 10 | E 10 | E 9 | E 9 | SE 12 | S 8 | SE 8 |
| kJ | 2 | 66 | 46 | 34 | 21 | 12 | 3 | 3 | 4 | 10 | 4 | 15 | 26 | 3 | 244 | 361 | 3 | 424 | 494 | 492 | 422 | 5 | 1 | 2 |
Swell 2 Height (m) Direction Period (s) | S 7 | E 8 | E 9 | E 9 | E 9 | NE 6 | NE 6 | E 7 | NNE 5 | E 7 | E 10 | — | S 12 | — | S 12 | S 12 | S 12 | S 11 | S 12 | — | — | — | SE 12 | S 12 |
| kJ | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 4 | 8 | — | 3 | — | 3 | 3 | 11 | 2 | 3 | — | — | — | 6 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | E 11 | E 11 | E 11 | NE 6 | E 10 | E 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | S 10 |
| kJ | — | — | — | — | 2 | 2 | 2 | 1 | 2 | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | NNE 6 | NNE 6 | — | — | NE 5 | NE 5 | E 5 | E 5 | E 4 | — | E 5 | E 5 | E 5 | E 9 | ENE 10 | NE 4 | E 10 | NNE 4 | NNE 5 | ENE 9 | NNE 6 | ENE 9 | ENE 8 | ENE 8 |
| kJ | 97 | 100 | — | — | 21 | 12 | 4 | 7 | 6 | — | 11 | 19 | 34 | 196 | 163 | 20 | 432 | 42 | 61 | 766 | 122 | 826 | 723 | 679 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 526 | 647 | 524 | 2492 | 208 | 275 | 888 | 888 | 959 | 1118 | 106 | 106 | 1122 | 0 | 0 | 94 | 529 | 529 | 655 | 529 | 529 | 529 | 529 | 655 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
Header Global | ||||||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Green Harbor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
Nearest