Surf Forecasts:
How big are the waves at Green Harbor today (18 Jul):
- Morning surf: Morning surf (18 Jul, local time) - 0.5ft (0.1m), 14s period with E swell.
- Afternoon surf: Afternoon surf (18 Jul, local time) - 2ft (0.6m), 3s period with S swell.
- Evening surf: Evening surf (18 Jul, local time) - 2.5ft (0.7m), 4s period with S swell.
The current surf forecast for Green Harbor at 7AM is: 0.1m 14s primary swell from a East direction and 0.1m 8s secondary swell from a East direction (forecast issued at 01:00am July 18). The wind direction is predicted to be onshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Jul) | 0.5ft (0.1m) | 14s |
| Afternoon (18 Jul) | 2ft (0.6m) | 3s |
| Evening (18 Jul) | 2.5ft (0.7m) | 4s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastLight rain (total 4mm), mostly falling on Sat afternoon. Warm (max 27°C on Sat afternoon, min 19°C on Sun night). Winds decreasing (fresh winds from the SSW on Sat afternoon, calm by Mon morning). | ||||||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | ||||||||||||||||||||||
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 14 | E 14 | E 14 | E 13 | S 3 | S 3 | S 4 | S 4 | SE 6 | SE 5 | E 13 | E 13 | E 13 | E 12 | N 4 | N 4 | N 4 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 4 | 4 | 4 | 4 | 4 | 11 | 12 | 12 | 11 | 5 | 4 | 3 | 3 | 3 | 5 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 3 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | on | on | on | cross-on | on | on | on | on | cross | cross-off | cross-off | cross-off | glassy | cross | cross | cross | cross-on | glassy | cross | cross-on | cross-on | cross-on |
High Tide | 2:44AM3.28m | 3:17PM3.05m | 3:37AM3.11m | 4:09PM3.02m | 4:31AM2.92m | 5:00PM2.97m | ||||||||||||||||||
Low Tide | 9:01AM-0.22m | 9:22PM0.00m | 9:50AM-0.09m | 10:17PM0.08m | 10:40AM0.08m | |||||||||||||||||||
 |  |  |  |  |  |  |  | | | | | | | |  | | | | | | | | | |
 | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — | — | 5:22 | — | — | — | — | — | — |
 | — | — | — | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:14 | — | — | — | — | — | — | — | 8:13 | — |
mm | — | — | — | — | — | 2 | 1 | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 22 | 21 | 21 | 26 | 27 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 25 | 25 | 24 | 22 | 20 | 19 | 19 | 24 | 25 | 26 | 22 | 20 |
Feels °C | 19 | 19 | 19 | 23 | 23 | 17 | 17 | 19 | 20 | 22 | 19 | 17 | 22 | 23 | 23 | 19 | 17 | 16 | 17 | 22 | 21 | 20 | 19 | 18 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | E 13 | E 13 | SE 6 | SE 5 | ESE 6 | SE 6 | SE 6 | SE 8 | N 4 | N 4 | N 4 | N 4 | N 4 | N 4 | — | SE 9 | SE 9 | SE 4 |
| kJ | 4 | 4 | 4 | 4 | 4 | 3 | 3 | 3 | 11 | 5 | 4 | 1 | 2 | 3 | 5 | 3 | 3 | 3 | 3 | 1 | — | 3 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 8 | E 13 | E 13 | E 13 | E 13 | E 13 | E 12 | SE 8 | SE 6 | SE 5 | E 12 | E 12 | SE 10 | SE 9 | — | E 12 | E 8 |
| kJ | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 3 | 4 | 3 | — | 3 | 1 |
Swell 3 Height (m) Direction Period (s) | — | E 9 | E 8 | E 8 | — | — | — | — | — | — | — | E 13 | SE 8 | E 12 | E 12 | SE 8 | SE 8 | SE 5 | SE 5 | E 12 | E 12 | E 12 | E 8 | E 12 |
| kJ | — | 1 | 1 | 1 | — | — | — | — | — | — | — | 3 | 3 | 3 | 3 | 3 | 3 | 1 | 1 | 3 | 3 | 3 | 1 | 3 |
Wind waves Height (m) Direction Period (s) | — | — | — | — | S 3 | S 3 | S 4 | S 4 | SW 3 | SW 3 | WNW 2 | NNW 4 | N 4 | N 4 | N 4 | — | — | — | — | — | — | SSE 2 | SSE 3 | — |
| kJ | — | — | — | — | 4 | 11 | 12 | 12 | 5 | 1 | 1 | 10 | 10 | 5 | 7 | — | — | — | — | — | — | 1 | 3 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 515 | 515 | 959 | 959 | 2719 | 474 | 341 | 346 | 463 | 81 | 94 | 72 | 72 | 74 | 72 | 74 | 57 | 96 | 96 | 96 | 124 | 124 | 515 | 515 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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