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Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 1 am Monday 18 Aug 2025 EDT
How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 2AM is: 0.2m 13s primary swell from a East direction and 0.1m 10s secondary swell from a East direction, 0.1m 13s secondary swell from a East direction (forecast issued at 01:00am August 18). An open ocean swell of 1.2m 5s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EDT) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Aug) | 6ft (1.9m) | 7s |
| Afternoon (18 Aug) | 6ft (1.8m) | 7s |
| Evening (18 Aug) | 4.5ft (1.4m) | 7s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
| 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 | 2 AM | 5 AM | 8 AM | 11 AM | 2 PM | 5 PM | 8 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 13 | 13 | 6 | 7 | 7 | 7 | 7 | 7 | 7 | 7 | 6 | 17 | 7 | 9 | 16 | 16 | 15 | 15 | 14 | 17 | 16 | 16 | 16 |
Wave (?)Graph  | ||||||||||||||||||||||||
| Energy (?) | 6 | 19 | 5 | 323 | 354 | 378 | 311 | 233 | 173 | 134 | 93 | 83 | 49 | 76 | 121 | 138 | 125 | 119 | 133 | 161 | 185 | 155 | 200 | 228 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | off | off | cross- off | cross- off | off | off | cross- off | off | off | cross- off | cross- off | cross | cross- on | glass | glass | cross- off | cross- off | cross- off | cross |
High Tide / height (m) | 7:31AM 2.58 | 7:52PM 3.10 | 8:38AM 2.57 | 8:57PM 3.12 | 9:42AM 2.62 | |||||||||||||||||||
Low Tide / height (m) | 1:15AM 0.03 | 1:28PM 0.32 | 2:21AM 0.04 | 2:32PM 0.32 | 3:25AM 0.01 | 3:34PM 0.28 | ||||||||||||||||||
Monday 18 | Tuesday 19 | Wednesday 20 | ||||||||||||||||||||||
| Sunrise | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:52 | - | - | - | - | - | - | - | 5:54 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 7:38 | - | - | - | - | - | - | - | 7:37 | - | - | - | - | - | - | - | 7:36 | - |
 |  | |  |  | | |  | | | | | | | | |  | | |  | | | | | |
Rain (mm) | 2 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 20 | 18 | 17 | 16 | 15 | 15 | 16 | 17 | 18 | 18 | 17 | 17 | 18 | 18 | 18 | 18 | 18 | 17 | 17 | 17 | 18 | 19 | 20 | 19 |
| Feels °C (?) | 16 | 13 | 11 | 9 | 9 | 9 | 12 | 14 | 15 | 15 | 14 | 15 | 15 | 15 | 15 | 15 | 15 | 15 | 17 | 17 | 17 | 17 | 17 | 16 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
Recent Eyeball Surf Reports for Massachusetts
Continuing clean conditions at Green Harbor (light winds from the NE at Marshfield Airport 3 km from Green Harbor). 1.4m 5s windswell from the NE to make surfable waves.
1 h 36 min ago
FREE! Surf-Forecast.com widget for your website
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