Surf Forecasts:
How big are the waves at Green Harbor today (20 Oct):
- Morning surf: Morning surf (20 Oct, local time) - 4.5ft (1.4m), 10s period with E swell.
- Afternoon surf: Afternoon surf (20 Oct, local time) - 7ft (2.2m), 10s period with ENE swell.
- Evening surf: Evening surf (20 Oct, local time) - 7.5ft (2.3m), 7s period with ENE swell.
The current surf forecast for Green Harbor at 11AM is: 1.1m 10s primary swell from a East direction (forecast issued at 07:00am October 20). An open ocean swell of 1.6m 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 (20 Oct) | 4.5ft (1.4m) | 10s |
| Afternoon (20 Oct) | 7ft (2.2m) | 10s |
| Evening (20 Oct) | 7.5ft (2.3m) | 7s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastMostly dry. Very mild (max 13°C on Thu afternoon, min 8°C on Thu night). Mainly strong winds. | |||||||||||||||||||||||
Tuesday 20 | Wednesday 21 | Thursday 22 | |||||||||||||||||||||
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 10 | E 10 | E 10 | ENE 10 | ENE 10 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | NE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 318 | 461 | 239 | 926 | 913 | 538 | 680 | 768 | 853 | 910 | 840 | 848 | 853 | 859 | 812 | 541 | 552 | 542 | 466 | 512 | 682 | 413 | 314 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | off | cross-off | cross-off | off | off | off | off | off | off | off | off | off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 7:21AM2.33m | 7:37PM2.56m | 8:15AM2.43m | 8:31PM2.61m | 9:02AM2.56m | 9:21PM2.68m | |||||||||||||||||
Low Tide | 1:19PM0.68m | 1:56AM0.45m | 2:15PM0.58m | 2:45AM0.40m | 3:06PM0.44m | ||||||||||||||||||
 |  |  | | | | | |  |  | | | |  | | | | | | | | | | |
 | 7:00 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — | — | 7:01 | — | — | — | — | — | — |
 | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:50 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 10 | 10 | 11 | 11 | 12 | 12 | 12 | 10 | 10 | 9 | 9 | 9 | 10 | 9 | 9 | 10 | 10 | 10 | 10 | 11 | 13 | 13 | 12 |
Feels °C | 5 | 5 | 4 | 4 | 5 | 5 | 4 | 2 | 2 | 1 | 1 | 2 | 3 | 2 | 2 | 3 | 3 | 3 | 2 | 3 | 7 | 7 | 3 |
Swell 1 Height (m) Direction Period (s) | E 10 | E 10 | E 10 | SE 12 | SE 12 | SE 12 | SE 9 | SE 9 | SSE 10 | SSE 11 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | SSE 12 | E 9 | ENE 9 | ENE 9 | ENE 9 | ENE 9 | ENE 8 | S 10 | ENE 8 |
| kJ | 318 | 461 | 239 | 5 | 6 | 5 | 3 | 3 | 10 | 11 | 13 | 14 | 14 | 14 | 14 | 541 | 552 | 542 | 466 | 512 | 493 | 2 | 314 |
Swell 2 Height (m) Direction Period (s) | — | S 12 | — | — | — | — | — | S 12 | — | — | — | — | S 8 | — | S 8 | — | S 12 | — | — | — | — | — | — |
| kJ | — | 3 | — | — | — | — | — | 3 | — | — | — | — | 1 | — | 1 | — | 3 | — | — | — | — | — | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | NNE 4 | NNE 4 | NE 6 | ENE 10 | ENE 10 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 9 | ENE 9 | ENE 9 | NNE 5 | NNE 5 | NNE 6 | NNE 6 | N 6 | NE 8 | ENE 8 | NNE 6 |
| kJ | 11 | 25 | 157 | 926 | 913 | 538 | 680 | 768 | 853 | 910 | 840 | 848 | 853 | 859 | 812 | 80 | 106 | 106 | 122 | 62 | 682 | 413 | 248 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 49 | 55 | 515 | 515 | 276 | 132 | 529 | 529 | 529 | 529 | 977 | 977 | 977 | 501 | 131 | 55 | 55 | 55 | 500 | 499 | 49 | 108 | 275 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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