Surf Forecasts:
How big are the waves at Green Harbor today (18 Sep):
- Morning surf: Morning surf (18 Sep, local time) - 1.5ft (0.4m), 7s period with E swell.
- Afternoon surf: Afternoon surf (18 Sep, local time) - 0.5ft (0.2m), 12s period with E swell.
- Evening surf: Evening surf (18 Sep, local time) - 0.5ft (0.2m), 12s period with E swell.
The current surf forecast for Green Harbor at 6AM is: 0.2m 12s primary swell from a East direction and 0.3m 7s secondary swell from a East direction, 0.3m 6s secondary swell from a East direction, 0.2m 2s secondary swell from a West-southwest direction (forecast issued at 01:00am September 18). The wind direction is predicted to be cross-shore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Sep) | 1.5ft (0.4m) | 7s |
| Afternoon (18 Sep) | 0.5ft (0.2m) | 12s |
| Evening (18 Sep) | 0.5ft (0.2m) | 12s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Short Range ForecastModerate rain (total 10mm), heaviest on Sun night. Warm (max 23°C on Fri afternoon, min 13°C on Fri night). Wind will be generally light. | ||||||||||||||||||||||||
Friday 18 | Saturday 19 | Sunday 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 7 | E 12 | E 7 | E 7 | E 12 | E 12 | E 12 | E 12 | E 12 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 5 | E 11 | E 11 | E 11 | E 9 | E 9 | E 8 |
Wave Graph  | ||||||||||||||||||||||||
 kJ | 14 | 12 | 16 | 15 | 11 | 11 | 11 | 11 | 11 | 203 | 181 | 135 | 109 | 69 | 47 | 27 | 15 | 14 | 9 | 9 | 9 | 15 | 15 | 13 |
Wind (km/h) | ||||||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-off | off | off | off | off | off | cross-off | cross-off | cross | cross-on | cross-on | cross | cross | cross-on | cross | cross-off | cross |
High Tide | 5:08AM2.38m | 5:24PM2.64m | 6:05AM2.29m | 6:22PM2.58m | 7:05AM2.25m | 7:22PM2.57m | ||||||||||||||||||
Low Tide | 11:05AM0.63m | 11:48PM0.45m | 12:00PM0.70m | 00:47AM0.50m | 12:59PM0.73m | |||||||||||||||||||
 |  |  |  | | |  | | | | | | | | | | | |  | | | | | | |
 | — | 6:24 | — | — | — | — | — | — | — | 6:26 | — | — | — | — | — | — | — | 6:26 | — | — | — | — | — | — |
 | — | — | — | — | — | 6:46 | — | — | — | — | — | — | — | 6:45 | — | — | — | — | — | — | — | 6:44 | — | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 2 |
Temp °C | 21 | 20 | 18 | 20 | 23 | 22 | 21 | 18 | 16 | 13 | 13 | 13 | 13 | 13 | 13 | 14 | 13 | 13 | 13 | 15 | 15 | 14 | 14 | 14 |
Feels °C | 20 | 21 | 19 | 21 | 23 | 22 | 17 | 13 | 11 | 7 | 8 | 8 | 9 | 10 | 9 | 11 | 11 | 11 | 10 | 11 | 12 | 13 | 12 | 11 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 12 | E 12 | E 7 | E 7 | NE 6 | NE 6 | NE 6 | NE 6 | NE 5 | NE 5 | ENE 5 | E 9 | ESE 4 | E 9 | E 8 |
| kJ | 14 | 10 | 16 | 15 | 8 | 8 | 8 | 10 | 10 | 11 | 11 | 9 | 4 | 69 | 47 | 27 | 15 | 14 | 6 | 4 | 6 | 3 | 15 | 13 |
Swell 2 Height (m) Direction Period (s) | — | E 6 | E 12 | E 12 | NNE 3 | NNE 4 | E 12 | E 12 | E 12 | — | E 12 | E 11 | E 11 | E 7 | E 7 | E 7 | E 7 | E 7 | E 8 | E 8 | E 11 | E 9 | E 11 | S 10 |
| kJ | — | 7 | 11 | 11 | 1 | 1 | 11 | 11 | 11 | — | 11 | 10 | 10 | 10 | 4 | 4 | 4 | 4 | 5 | 5 | 9 | 15 | 2 | 2 |
Swell 3 Height (m) Direction Period (s) | E 12 | E 12 | E 12 | E 12 | E 12 | E 12 | — | — | — | S 12 | — | — | — | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | E 11 | NE 5 | NE 5 | S 11 | — |
| kJ | 3 | 12 | 11 | 11 | 11 | 11 | — | — | — | 3 | — | — | — | 2 | 2 | 2 | 9 | 9 | 9 | 9 | 1 | 1 | 2 | — |
Wind waves Height (m) Direction Period (s) | SW 2 | WSW 2 | WNW 3 | — | N 3 | — | NNE 4 | N 4 | NNE 4 | NE 6 | NE 6 | NE 6 | NE 6 | — | — | — | — | — | ESE 3 | — | ESE 3 | — | E 4 | E 4 |
| kJ | 2 | 1 | 1 | — | 2 | — | 2 | 9 | 30 | 203 | 181 | 135 | 109 | — | — | — | — | — | 1 | — | 2 | — | 2 | 2 |
Nearest Offshore or Glassy | ||||||||||||||||||||||||
Distance (km) | 81 | 57 | 94 | 131 | 174 | 174 | 515 | 524 | 524 | 55 | 0 | 0 | 0 | 1205 | 1205 | 85 | 1042 | 959 | 959 | 959 | 959 | 85 | 804 | 775 |
Best forecast wave conditions in Massachusetts | ||||||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||||||
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