Using Surf-Forecast’s Historical Surf Data To Find The Most Consistent Waves On Earth
Using our statistical data for 7000 spots dating back to 2006, we can find those waves that break the most, with the best winds.
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 12 am Saturday 27 Dec 2025 ESTForecast update in hr min s Forecast update imminent
Green Harbor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Green Harbor sea temperature is
6.0° C
(Which is slightly cooler than normal)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 4AM is: 0.8m 7s primary swell from a Northeast direction and 0.5m 9s secondary swell from a East-northeast direction, 0.4m 9s secondary swell from a Northeast direction (forecast issued at 12:00am December 27). The wind direction is predicted to be offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (27 Dec) | 1ft (0.3m) | 12s |
| Afternoon (27 Dec) | 2.5ft (0.7m) | 10s |
| Evening (27 Dec) | 1.5ft (0.5m) | 11s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Saturday 27 | Sunday 28 | Monday 29 | ||||||||||||||||||||||
| 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | 4 PM | 7 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |  |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 7 | 7 | 7 | 9 | 12 | 10 | 10 | 11 | 11 | 11 | 11 | 12 | 12 | 11 | 11 | 11 | 11 | 10 | 11 | 4 | 4 | 4 | 4 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 118 | 65 | 52 | 73 | 30 | 80 | 92 | 107 | 70 | 69 | 69 | 78 | 78 | 71 | 69 | 47 | 29 | 22 | 12 | 18 | 21 | 21 | 16 | 12 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | off | off | off | off | off | cross- off | cross- off | cross- off | cross | cross- on | cross- on | cross- on | cross- on | cross- on | on | on | on | on | cross- on | cross- on | on | on | on | on |
High Tide / height (m) | 4:12AM 2.68 | 4:32PM 2.66 | 5:04AM 2.78 | 5:31PM 2.61 | 5:59AM 2.90 | 6:32PM 2.59 | ||||||||||||||||||
Low Tide / height (m) | 9:56PM 0.14 | 10:23AM 0.30 | 10:46PM 0.18 | 11:21AM 0.22 | 11:40PM 0.20 | 12:21PM 0.10 | ||||||||||||||||||
Saturday 27 | Sunday 28 | Monday 29 | ||||||||||||||||||||||
| Sunrise | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - | - | - | - | - | 7:09 | - | - | - |
| Sunset | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:16 | - | - | - | - | - | - | - | 4:17 | - |
 |  | | |  | |  |  | | | | | | |  | | | |  |  | | |  | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | 10 | 3 | - | - | 1 | - |
| Temp. °C | -5 | -4 | -3 | -2 | -1 | -2 | -4 | -4 | -3 | -4 | -4 | -4 | -2 | 2 | 2 | 0 | 0 | 2 | 5 | 7 | 9 | 10 | 10 | 7 |
| Feels °C (?) | -9 | -9 | -9 | -9 | -9 | -10 | -11 | -10 | -8 | -10 | -10 | -10 | -7 | -3 | -3 | -6 | -7 | -4 | -1 | 1 | 3 | 5 | 4 | -1 |
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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