Surf Forecasts:
How big are the waves at Green Harbor today (19 Aug):
- Morning surf: Morning surf (19 Aug, local time) - 0.5ft (0.2m), 9s period with E swell.
- Afternoon surf: Afternoon surf (19 Aug, local time) - 1ft (0.3m), 6s period with ESE swell.
- Evening surf: Evening surf (19 Aug, local time) - 1ft (0.3m), 6s period with ESE swell.
The current surf forecast for Green Harbor at 9PM is: 0.3m 6s primary swell from a East-southeast direction and 0.2m 8s secondary swell from a East direction, 0.5m 3s secondary swell from a South direction (forecast issued at 01:00pm August 19). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (19 Aug) | 0.5ft (0.2m) | 9s |
| Afternoon (19 Aug) | 1ft (0.3m) | 6s |
| Evening (19 Aug) | 1ft (0.3m) | 6s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 8mm), mostly falling on Sat morning. Warm (max 29°C on Wed afternoon, min 17°C on Sat morning). Wind will be generally light. | |||||||||||||||||||||
Wed 19 | Thursday 20 | Friday 21 | |||||||||||||||||||
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) | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 8 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 8 | E 8 | E 7 | E 8 | E 7 | E 8 | E 8 | E 8 | E 8 | E 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 8 | 8 | 8 | 7 | 7 | 7 | 5 | 13 | 12 | 11 | 10 | 18 | 19 | 9 | 11 | 9 | 23 | 22 | 22 | 21 | 21 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | on | on | cross-on | off | cross-off | cross-off | cross-off | cross | cross-on | cross-off | cross-off | off | off | off | cross-off | cross-off |
High Tide | 5:12PM2.81m | 5:47AM2.45m | 6:06PM2.72m | 6:45AM2.33m | 7:03PM2.65m | ||||||||||||||||
Low Tide | 10:52AM0.38m | 11:32PM0.30m | 11:44AM0.52m | 00:28AM0.39m | 12:40PM0.62m | ||||||||||||||||
 | | |  | | | | | |  | |  |  | | | | | | | | | |
 | — | — | — | — | — | — | 5:54 | — | — | — | — | — | — | — | 5:56 | — | — | — | — | — | — |
 | — | — | 7:37 | — | — | — | — | — | — | — | 7:36 | — | — | — | — | — | — | — | 7:34 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 29 | 29 | 25 | 23 | 22 | 21 | 22 | 25 | 26 | 25 | 21 | 21 | 20 | 19 | 19 | 20 | 20 | 20 | 20 | 21 |
Feels °C | 27 | 27 | 26 | 23 | 22 | 22 | 22 | 23 | 26 | 25 | 26 | 19 | 21 | 19 | 18 | 17 | 18 | 18 | 19 | 18 | 20 |
Swell 1 Height (m) Direction Period (s) | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | ESE 8 | ESE 8 | ESE 8 | E 7 | E 8 | E 8 | E 7 | E 8 | E 7 | E 8 | E 8 | N 4 | E 8 | E 8 |
| kJ | 8 | 8 | 8 | 7 | 7 | 7 | 3 | 13 | 12 | 11 | 10 | 18 | 19 | 9 | 11 | 9 | 23 | 22 | 9 | 21 | 21 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | — | S 5 | — | S 3 | — | E 9 | E 9 | E 9 | E 15 | E 14 | E 8 | NNE 4 | NE 4 |
| kJ | 6 | 5 | 5 | 6 | 6 | 5 | 5 | 5 | — | 1 | — | 1 | — | 6 | 7 | 6 | 4 | 4 | 22 | 5 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | S 10 | S 10 | S 6 | S 6 | S 6 | S 4 | S 6 | SE 6 | — | S 5 | — | E 15 | E 15 | E 15 | — | E 14 | E 14 | E 14 | E 14 |
| kJ | — | — | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | — | 1 | — | 4 | 4 | 4 | — | 4 | 4 | 4 | 4 |
Wind waves Height (m) Direction Period (s) | — | S 2 | S 3 | S 3 | SSW 3 | — | — | — | — | — | S 3 | — | — | — | — | NNW 3 | N 4 | N 4 | — | — | — |
| kJ | — | 1 | 5 | 5 | 1 | — | — | — | — | — | 1 | — | — | — | — | 2 | 13 | 13 | — | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 85 | 85 | 85 | 43 | 81 | 54 | 54 | 54 | 85 | 174 | 85 | 85 | 85 | 57 | 94 | 94 | 515 | 832 | 647 | 515 | 131 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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