Surf Forecasts:
How big are the waves at Green Harbor today (17 Jul):
- Morning surf: Morning surf (17 Jul, local time) - 0.5ft (0.1m), 15s period with E swell.
- Afternoon surf: Afternoon surf (17 Jul, local time) - 0.5ft (0.1m), 14s period with E swell.
- Evening surf: Evening surf (17 Jul, local time) - 0.5ft (0.1m), 14s period with E swell.
The current surf forecast for Green Harbor at 9AM is: 0.1m 15s primary swell from a East direction and 0.2m 4s secondary swell from a North direction (forecast issued at 01:00am July 17). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (17 Jul) | 0.5ft (0.1m) | 15s |
| Afternoon (17 Jul) | 0.5ft (0.1m) | 14s |
| Evening (17 Jul) | 0.5ft (0.1m) | 14s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 5mm), mostly falling on Sat night. Warm (max 27°C on Sat morning, min 19°C on Sun night). Winds increasing (light winds from the NE on Fri afternoon, fresh winds from the SSW by Sat afternoon). | ||||||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | ||||||||||||||||||||||
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 15 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 14 | E 13 | S 3 | S 4 | S 4 | S 4 | SSW 4 | SE 5 | E 13 | E 13 | E 13 | E 12 | E 12 | E 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 5 | 5 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 4 | 7 | 17 | 17 | 23 | 12 | 5 | 4 | 4 | 3 | 3 | 3 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-on | cross | cross-off | off | cross | cross | cross-on | on | on | on | on | on | on | cross-on | cross-on | on | on | cross-on | cross | cross-off | cross-off | cross-off | cross |
High Tide | 1:52AM3.41m | 2:27PM3.04m | 2:44AM3.28m | 3:17PM3.05m | 3:37AM3.11m | 4:09PM3.02m | ||||||||||||||||||
Low Tide | 8:12AM-0.31m | 8:28PM-0.05m | 9:01AM-0.22m | 9:22PM0.00m | 9:50AM-0.09m | 10:17PM0.08m | ||||||||||||||||||
 | |  | | | | | | | | | |  |  | |  |  |  | | | | | | | |
 | — | 5:20 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:15 | — | — | — | — | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:14 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 2 | — | — | — | — | — | — | — |
Temp °C | 21 | 20 | 20 | 24 | 25 | 24 | 24 | 22 | 21 | 21 | 20 | 27 | 27 | 23 | 20 | 21 | 22 | 22 | 23 | 24 | 25 | 26 | 24 | 22 |
Feels °C | 19 | 17 | 16 | 21 | 22 | 20 | 22 | 20 | 20 | 19 | 18 | 25 | 23 | 18 | 16 | 18 | 21 | 21 | 21 | 20 | 21 | 23 | 21 | 18 |
Swell 1 Height (m) Direction Period (s) | E 9 | N 3 | N 4 | E 14 | N 3 | N 3 | — | E 14 | — | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | SE 6 | SE 6 | SE 5 | ESE 6 | ESE 6 | SE 6 | N 4 | N 3 | N 3 |
| kJ | 1 | 1 | 1 | 4 | 1 | 1 | — | 4 | — | 4 | 4 | 4 | 4 | 3 | 3 | 6 | 9 | 4 | 4 | 4 | 2 | 2 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | E 15 | E 15 | E 15 | E 9 | E 14 | E 14 | E 14 | E 8 | E 14 | — | — | E 8 | E 8 | E 8 | E 8 | E 13 | E 13 | E 13 | E 13 | E 13 | E 13 | SE 6 | SE 6 | SE 8 |
| kJ | 5 | 5 | 4 | 2 | 4 | 4 | 4 | 1 | 4 | — | — | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 3 |
Swell 3 Height (m) Direction Period (s) | — | E 9 | E 9 | E 10 | E 9 | E 8 | E 8 | — | E 8 | E 9 | E 8 | E 8 | — | — | — | — | — | — | E 13 | E 13 | E 8 | E 12 | E 12 | E 12 |
| kJ | — | 1 | 1 | 2 | 1 | 1 | 1 | — | 1 | 1 | 1 | 1 | — | — | — | — | — | — | 3 | 3 | 1 | 3 | 3 | 3 |
Wind waves Height (m) Direction Period (s) | NNW 3 | — | — | NNW 3 | — | — | — | SSE 2 | SSE 3 | — | — | S 2 | S 3 | S 4 | S 4 | S 4 | SSW 4 | SW 3 | WSW 3 | NW 3 | NNW 3 | — | — | — |
| kJ | 1 | — | — | 2 | — | — | — | 1 | 2 | — | — | 1 | 7 | 17 | 17 | 23 | 12 | 5 | 3 | 3 | 4 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 959 | 515 | 945 | 2480 | 515 | 515 | 524 | 524 | 2477 | 524 | 524 | 959 | 2719 | 400 | 359 | 467 | 6 | 81 | 87 | 106 | 106 | 74 | 74 | 72 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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