Surf Forecasts:
How big are the waves at Green Harbor today (15 Aug):
- Morning surf: Morning surf (15 Aug, local time) - 0.5ft (0.1m), 12s period with E swell.
- Afternoon surf: Afternoon surf (15 Aug, local time) - 1.5ft (0.4m), 4s period with NE swell.
- Evening surf: Evening surf (15 Aug, local time) - 0.5ft (0.1m), 9s period with E swell.
The current surf forecast for Green Harbor at 7AM is: 0.1m 12s primary swell from a East direction and 0.1m 9s secondary swell from a East direction (forecast issued at 01:00am August 15). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (15 Aug) | 0.5ft (0.1m) | 12s |
| Afternoon (15 Aug) | 1.5ft (0.4m) | 4s |
| Evening (15 Aug) | 0.5ft (0.1m) | 9s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastHeavy rain (total 26mm), heaviest during Mon afternoon. Warm (max 25°C on Sun afternoon, min 18°C on Sun morning). Mainly fresh winds. | ||||||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||||||||||
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 12 | E 12 | E 12 | NE 4 | NE 4 | NE 4 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | SSE 3 | SSE 3 | E 9 | E 9 | S 3 | SSE 3 | SSE 3 | SSE 5 | SSE 3 | SE 5 | E 10 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 3 | 3 | 3 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 3 | 3 | 7 | 3 | 12 | 2 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross | on | on | cross-on | glassy | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross | cross | cross |
High Tide | 1:34AM3.27m | 2:01PM3.10m | 2:22AM3.14m | 2:47PM3.08m | 3:11AM2.97m | 3:34PM3.02m | ||||||||||||||||||
Low Tide | 7:47AM-0.20m | 8:07PM-0.09m | 8:32AM-0.09m | 8:56PM-0.03m | 9:17AM0.05m | 9:46PM0.07m | ||||||||||||||||||
 | |  |  | | |  | | | | | | | | |  | | |  |  |  |  |  | | |
 | — | 5:48 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — | — | 5:50 | — | — | — | — | — | — |
 | — | — | — | — | — | 7:43 | — | — | — | — | — | — | — | 7:42 | — | — | — | — | — | — | — | 7:39 | — | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 8 | 13 | 3 | 1 | 1 |
Temp °C | 20 | 20 | 19 | 21 | 21 | 21 | 21 | 21 | 20 | 19 | 18 | 22 | 25 | 24 | 22 | 22 | 22 | 22 | 22 | 20 | 20 | 21 | 21 | 21 |
Feels °C | 18 | 18 | 18 | 20 | 18 | 18 | 19 | 19 | 19 | 18 | 18 | 22 | 22 | 19 | 19 | 20 | 20 | 19 | 19 | 20 | 19 | 21 | 21 | 24 |
Swell 1 Height (m) Direction Period (s) | E 9 | E 9 | E 9 | NE 4 | NE 4 | NE 4 | NNE 4 | NNE 4 | NE 4 | — | E 9 | E 9 | E 9 | E 9 | E 9 | SE 4 | E 9 | E 9 | E 9 | E 9 | E 9 | E 10 | E 10 | E 10 |
| kJ | 2 | 2 | 2 | 4 | 4 | 4 | 1 | 1 | 1 | — | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
Swell 2 Height (m) Direction Period (s) | — | E 12 | E 12 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | E 9 | — | — | — | — | — | E 9 | — | — | — | — | — | — | — | E 9 |
| kJ | — | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | — | — | — | — | — | 2 | — | — | — | — | — | — | — | 2 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | — | S 6 | S 6 | S 6 | S 6 | — | — | — | — | — | — | — | — | — | — | — | — | S 9 |
| kJ | 3 | 3 | 3 | 3 | 3 | 3 | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | N 3 | NNE 3 | NNE 4 | NNE 4 | — | — | — | — | — | — | — | — | — | SSE 3 | SSE 3 | S 3 | S 3 | S 3 | SSE 3 | SSE 3 | SSE 5 | SSE 3 | SE 5 | SE 5 |
| kJ | 1 | 4 | 2 | 5 | — | — | — | — | — | — | — | — | — | 2 | 3 | 1 | 1 | 2 | 3 | 3 | 7 | 3 | 12 | 12 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 1036 | 976 | 977 | 1811 | 2480 | 2480 | 2480 | 1042 | 1612 | 2477 | 1811 | 1206 | 1671 | 2480 | 1665 | 1552 | 1543 | 1671 | 95 | 261 | 221 | 124 | 43 | 15 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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