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Green Harbor Surf Forecast
/ Massachusetts (29 breaks) / Massachusetts (28 breaks) /
Surf Forecasts:
Green Harbor surfForecast / Massachusetts / USA
48hr Weather and Surf, issued 6 pm Wednesday 18 Feb 2026 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
1.6° C
(Which is 2.0°C colder than average for this time of year)How big are the waves at Green Harbor today?
The current surf forecast for Green Harbor at 10PM is: 0.9m 11s primary swell from a East-northeast direction (forecast issued at 06:00pm February 18). An open ocean swell of 0.1m 8s is not directed at the surf break, a second open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be offshore.
| Time (EST) & Date | Wave Height | Wave Period |
|---|---|---|
| Morning (18 Feb) | - | - |
| Afternoon (18 Feb) | 3.5ft (1.0m) | 11s |
| Evening (18 Feb) | 3ft (0.9m) | 11s |
Table - waves today at Green Harbor. (Swell directed towards the surf break)
Updates in hr min s Forecast update imminent
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | |||||||||||||||||||||
| 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 | 10 PM | 1 AM | 4 AM | 7 AM | 10 AM | 1 PM | |
Rating (10 max) | ||||||||||||||||||||||||
Swell Height Map |    |    |    |    | ||||||||||||||||||||
| Wave Height (m) & direction (?) | ||||||||||||||||||||||||
| Period(s) (?) | 11 | 11 | 11 | 11 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 10 | 9 | 9 | 9 | 9 | 3 | 9 | 5 | 10 | 6 | 6 | 7 | 7 |
Wave (?)Graph  | ||||||||||||||||||||||||
 kJ (?) | 273 | 217 | 210 | 164 | 125 | 82 | 80 | 57 | 56 | 38 | 30 | 23 | 17 | 17 | 8 | 8 | 0 | 8 | 0 | 2 | 0 | 245 | 306 | 279 |
Wind (km/h) | ||||||||||||||||||||||||
| Wind State (?) onshore cross-onshore cross-shore cross-offshore offshore glassy | glass | cross- off | off | off | off | off | off | off | glass | cross | cross- on | cross- on | cross | cross | cross | cross- off | cross- off | cross- off | off | cross- off | off | off | cross- off | cross- off |
High Tide / height (m) | 12:13AM 2.80 | 12:29PM 2.98 | 12:53AM 2.92 | 1:12PM 2.97 | 1:34AM 3.01 | |||||||||||||||||||
Low Tide / height (m) | 6:03PM -0.03 | 6:17AM 0.04 | 6:42PM -0.07 | 7:01AM -0.06 | 7:23PM -0.07 | 7:48AM -0.12 | ||||||||||||||||||
Wednesday 18 | Thursday 19 | Friday 20 | Saturday 21 | |||||||||||||||||||||
| Sunrise | - | - | - | - | - | 6:33 | - | - | - | - | - | - | - | 6:31 | - | - | - | - | - | - | - | 6:30 | - | - |
| Sunset | 5:17 | - | - | - | - | - | - | - | 5:19 | - | - | - | - | - | - | - | 5:21 | - | - | - | - | - | - | - |
 |  |  | |  |  |  | | |  | | | |  | | |  |  | | | | | | | |
Rain (mm) | 3 | 1 | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - | - |
| Temp. °C | 3 | 3 | 2 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | -2 | -2 | -3 |
| Feels °C (?) | 1 | -2 | -5 | -5 | -6 | -6 | -6 | -3 | -4 | -4 | -4 | -4 | -4 | -4 | -3 | -4 | -7 | -5 | -5 | -7 | -7 | -10 | -8 | -9 |
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
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FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Green Harbor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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