Surf Forecasts:
How big are the waves at Green Harbor today (20 Aug):
- Morning surf: Morning surf (20 Aug, local time) - 1ft (0.3m), 8s period with ESE swell.
- Afternoon surf: Afternoon surf (20 Aug, local time) - 1ft (0.3m), 8s period with E swell.
- Evening surf: Evening surf (20 Aug, local time) - 1.5ft (0.4m), 8s period with E swell.
The current surf forecast for Green Harbor at 11AM is: 0.3m 8s primary swell from a East-southeast direction (forecast issued at 07:00am August 20). An open ocean swell of 0.1m 6s is not directed at the surf break. The wind direction is predicted to be glassy.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (20 Aug) | 1ft (0.3m) | 8s |
| Afternoon (20 Aug) | 1ft (0.3m) | 8s |
| Evening (20 Aug) | 1.5ft (0.4m) | 8s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 17mm), heaviest on Sat night. Warm (max 27°C on Thu afternoon, min 18°C on Thu night). Wind will be generally light. | |||||||||||||||||||||||
Thursday 20 | Friday 21 | Saturday 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 8 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 8 | E 8 | E 7 | E 7 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 5 | ENE 5 | ENE 5 | E 5 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 5 | 13 | 12 | 11 | 10 | 10 | 19 | 9 | 8 | 9 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 11 | 10 | 37 | 50 | 31 | 19 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | glassy | cross-off | glassy | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | cross-off | cross-off | off | off | cross-off | cross-off | off | off | off | cross-off |
High Tide | 5:47AM2.45m | 6:06PM2.72m | 6:45AM2.33m | 7:03PM2.65m | 7:46AM2.28m | 8:02PM2.64m | |||||||||||||||||
Low Tide | 11:44AM0.52m | 00:28AM0.39m | 12:40PM0.62m | 1:28AM0.45m | 1:37PM0.67m | ||||||||||||||||||
 |  | |  |  |  | |  | | | | | | | | | | | |  | |  | | |
 | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | — | — | 7:36 | — | — | — | — | — | — | — | 7:34 | — | — | — | — | — | — | — | 7:32 | — | — |
mm | — | — | — | — | — | — | — | 1 | 2 | — | — | — | — | — | — | — | — | — | — | 2 | 5 | 6 | — |
Temp °C | 22 | 22 | 26 | 27 | 27 | 25 | 21 | 18 | 18 | 19 | 20 | 20 | 20 | 20 | 20 | 20 | 19 | 19 | 20 | 18 | 18 | 19 | 19 |
Feels °C | 23 | 22 | 27 | 26 | 28 | 24 | 17 | 15 | 18 | 18 | 18 | 17 | 19 | 19 | 19 | 20 | 18 | 18 | 19 | 16 | 17 | 18 | 19 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 8 | E 8 | E 7 | NNE 4 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | ENE 5 | ENE 5 | ENE 5 | E 5 |
| kJ | 3 | 13 | 12 | 11 | 10 | 10 | 19 | 9 | 6 | 9 | 23 | 22 | 22 | 21 | 21 | 20 | 20 | 11 | 10 | 37 | 50 | 31 | 19 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | S 6 | S 5 | S 6 | SSE 2 | — | E 9 | E 7 | E 9 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 8 | E 13 | E 8 | NNE 4 |
| kJ | 5 | 5 | 1 | 1 | 1 | 1 | — | 6 | 8 | 6 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 11 | 13 | 5 | 3 |
Swell 3 Height (m) Direction Period (s) | S 6 | S 6 | — | SE 6 | — | — | E 9 | E 15 | E 9 | E 15 | — | E 14 | E 14 | E 14 | — | — | E 13 | — | S 5 | E 13 | E 13 | E 13 | E 8 |
| kJ | 1 | 1 | — | 1 | — | — | 2 | 4 | 6 | 4 | — | 4 | 4 | 4 | — | — | 14 | — | 1 | 3 | 13 | 13 | 10 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | — | — | N 2 | N 4 | NNW 4 | NE 4 | NNE 3 | NNE 4 | NE 4 | NE 4 | NE 4 | NE 4 | NE 3 | NE 4 | ENE 5 | — | — | — | — |
| kJ | — | — | — | — | — | — | 1 | 9 | 3 | 3 | 4 | 10 | 7 | 7 | 5 | 3 | 6 | 16 | 35 | — | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 57 | 54 | 54 | 959 | 85 | 54 | 85 | 85 | 94 | 94 | 515 | 959 | 515 | 515 | 85 | 91 | 94 | 649 | 794 | 1205 | 275 | 275 | 52 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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