Surf Forecasts:
How big are the waves at Green Harbor today (17 Aug):
- Morning surf: Morning surf (17 Aug, local time) - 1.5ft (0.4m), 3s period with SSE swell.
- Afternoon surf: Afternoon surf (17 Aug, local time) - 0.5ft (0.1m), 9s period with E swell.
- Evening surf: Evening surf (17 Aug, local time) - 1ft (0.3m), 4s period with SE swell.
The current surf forecast for Green Harbor at 10AM is: 0.1m 9s primary swell from a East direction and 0.3m 3s secondary swell from a South-southeast direction (forecast issued at 07:00am August 17). An open ocean swell of 0.1m 8s is not directed at the surf break. The wind direction is predicted to be cross-onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Aug) | 1.5ft (0.4m) | 3s |
| Afternoon (17 Aug) | 0.5ft (0.1m) | 9s |
| Evening (17 Aug) | 1ft (0.3m) | 4s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 3mm), mostly falling on Mon morning. Warm (max 29°C on Wed afternoon, min 18°C on Mon morning). Wind will be generally light. | |||||||||||||||||||||||
Monday 17 | Tuesday 18 | Wednesday 19 | |||||||||||||||||||||
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 | SSE 3 | E 9 | E 9 | SE 4 | SE 4 | SE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 9 | ESE 9 | ESE 9 | ESE 9 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 |
Wave Graph  | |||||||||||||||||||||||
 kJ | 2 | 3 | 2 | 2 | 2 | 3 | 10 | 3 | 4 | 4 | 3 | 7 | 16 | 16 | 26 | 9 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
Wind (km/h) | |||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | cross-on | cross | cross-off | cross-off | off | cross-off | cross-off | cross-off | off | off | off | off | glassy | glassy | cross | cross | cross | cross-on | on | on |
High Tide | 3:11AM2.97m | 3:34PM3.02m | 4:00AM2.79m | 4:21PM2.92m | 4:52AM2.61m | 5:12PM2.81m | |||||||||||||||||
Low Tide | 9:17AM0.05m | 9:46PM0.07m | 10:03AM0.22m | 10:37PM0.18m | 10:52AM0.38m | ||||||||||||||||||
 |  | |  |  |  | | |  | | | | | | | |  | |  | | | | | |
 | 5:50 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — | — | 5:52 | — | — | — | — | — | — |
 | — | — | — | — | 7:39 | — | — | — | — | — | — | — | 7:38 | — | — | — | — | — | — | — | 7:37 | — | — |
mm | 1 | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 19 | 19 | 18 | 20 | 20 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 21 | 19 | 19 | 19 | 19 | 19 | 23 | 27 | 29 | 25 | 24 |
Feels °C | 17 | 16 | 16 | 20 | 20 | 23 | 24 | 23 | 22 | 22 | 22 | 21 | 21 | 19 | 21 | 21 | 21 | 21 | 25 | 28 | 27 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 4 | E 9 | E 9 | E 9 | E 10 | E 10 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | ESE 4 | E 4 | ESE 9 | ESE 9 | ESE 9 | ESE 7 | ESE 6 | ESE 6 | ESE 6 | ESE 6 | E 6 | E 6 | E 6 |
| kJ | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 4 | 4 | 3 | 3 | 16 | 16 | 26 | 9 | 13 | 13 | 13 | 13 | 12 | 12 | 12 |
Swell 2 Height (m) Direction Period (s) | E 9 | E 8 | S 8 | — | — | S 9 | SE 4 | E 10 | E 10 | E 10 | SE 8 | ESE 9 | E 4 | E 4 | S 7 | ESE 9 | ESE 9 | E 8 | E 8 | E 8 | E 8 | E 9 | E 8 |
| kJ | 2 | 1 | 1 | — | — | 2 | 1 | 2 | 2 | 2 | 3 | 7 | 3 | 3 | 4 | 8 | 7 | 6 | 6 | 6 | 6 | 2 | 6 |
Swell 3 Height (m) Direction Period (s) | — | S 8 | — | — | — | — | E 10 | S 5 | SE 9 | S 6 | S 6 | — | — | — | — | S 7 | S 7 | S 7 | S 7 | S 6 | — | — | — |
| kJ | — | 1 | — | — | — | — | 2 | 5 | 3 | 6 | 3 | — | — | — | — | 4 | 4 | 4 | 4 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | S 3 | SSE 3 | SSE 3 | SSE 3 | SE 4 | SE 4 | SE 4 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SSW 2 |
| kJ | 1 | 3 | 2 | 1 | 2 | 3 | 10 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||||
Distance (km) | 438 | 334 | 281 | 221 | 106 | 85 | 74 | 106 | 96 | 96 | 96 | 85 | 96 | 96 | 81 | 61 | 52 | 52 | 54 | 151 | 43 | 43 | 81 |
Best forecast wave conditions in Massachusetts | |||||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||||
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