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Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 12 am Sunday 07 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
8.5° C
(Which is normal for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 5AM is: 0.2m 9s primary swell from a East direction and 0.1m 5s secondary swell from a Southeast direction (forecast issued at 12:00am December 07). An open ocean swell of 0.6m 4s is not directed at the surf break. The wind direction is predicted to be cross-shore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (07 Dec) | 1ft (0.3m) | 10s |
| Afternoon (07 Dec) | 1.5ft (0.5m) | 9s |
| Evening (07 Dec) | 1.5ft (0.5m) | 8s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Sunday 07 | Monday 08 | Tuesday 09 | ||||||||||||||||||||||
| 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) (?) | 9 | 9 | 9 | 9 | 10 | 9 | 9 | 9 | 8 | 8 | 8 | 8 | 8 | 6 | 6 | 6 | 6 | 6 | 6 | 6 | 5 | 9 | 9 | 4 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 7 | 7 | 7 | 6 | 18 | 42 | 40 | 39 | 36 | 36 | 36 | 21 | 12 | 187 | 165 | 125 | 77 | 47 | 34 | 17 | 11 | 6 | 6 | 12 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | cross- on | cross | cross | cross | cross | cross- on | cross- on | on | on | cross- on | cross | cross- off | cross- off | cross- off | cross- off | cross- off | cross- off | cross | cross | on | on | on | on | cross- on |
High Tide / height (m) | 12:26AM 2.91 | 12:39PM 3.49 | 1:19AM 2.88 | 1:33PM 3.38 | 2:14AM 2.84 | 2:29PM 3.22 | ||||||||||||||||||
Low Tide / height (m) | 6:21AM -0.03 | 7:05PM -0.42 | 7:15AM 0.02 | 7:58PM -0.31 | 8:11AM 0.09 | |||||||||||||||||||
Sunday 07 | Monday 08 | Tuesday 09 | ||||||||||||||||||||||
| Sunrise | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:56 | - | - | - | - | - | - | - | 6:58 | - | - | - | - |
| Sunset | - | - | - | - | - | - | 4:09 | - | - | - | - | - | - | - | 4:09 | - | - | - | - | - | - | - | 4:09 | - |
 | |  |  |  | | | | | | | |  | | |  | | | | | | | | | |
Rain (mm) | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 2 | 1 | 1 | 0 | 1 | 3 | 3 | 2 | 1 | 0 | 0 | -4 | -6 | -5 | -4 | -4 | -5 | -5 | -5 | -5 | -4 | -1 | 0 | 1 |
| Feels °C (?) | -4 | -6 | -5 | -6 | -5 | -1 | -2 | -4 | -6 | -7 | -9 | -15 | -17 | -15 | -12 | -11 | -12 | -11 | -11 | -11 | -10 | -8 | -7 | -5 |
- 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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