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Surf Forecasts:

Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 12 am Monday 12 Jan 2026 EST
Forecast 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
4.1° C
 (Which is 1.2°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 2AM is: 1.0m 4s primary swell from a West-northwest direction and 0.2m 6s secondary swell from a East direction, 0.2m 5s secondary swell from a East-northeast direction (forecast issued at 12:00am January 12). The wind direction is predicted to be cross-onshore.

Time (EST) & DateWave HeightWave Period
Morning (12 Jan)3.5ft (1.1m)5s
Afternoon (12 Jan)0.5ft (0.2m)10s
Evening (12 Jan)1.5ft (0.5m)3s

Table - waves today at Green Harbor. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Monday
12
Tuesday
13
Wednesday
14
10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM10 PM1 AM4 AM7 AM10 AM1 PM4 PM7 PM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
0.8
NW
1
WNW
1.1
NW
1.2
NW
1.1
NW
0.5
N
0.4
WSW
0.5
W
0.5
W
0.5
W
0.4
W
0.4
W
0.1
E
0.2
WSW
0.1
SE
0.4
SSW
0.6
SSW
0.7
SSW
0.9
SSW
0.8
SSW
0.6
SSW
0.4
SSW
0.4
SSW
0.1
E
Period(s) (?)4445553333339283344443310
Wave
Graph
(?)Metric surfscale
Energy kJ (?)173746654915455533213381321158442
Wind
(km/h)
35
W
40
W
40
WNW
35
W
30
W
30
W
20
WSW
25
SW
20
SW
20
WSW
25
WSW
20
WSW
20
WSW
15
SW
20
SSW
25
SW
30
SSW
35
SW
30
SW
25
SW
20
SSW
20
SSW
20
SSW
15
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		cross-
on		ononononononononononcross-
on		onononononcross-
on		cross-
on
High Tide
/ height (m)
6:11AM
2.68
6:46PM
2.32
7:05AM
2.66
7:44PM
2.27
7:57AM
2.66
Low Tide
/ height (m)
11:46PM
0.41
12:30PM
0.34
12:39AM
0.51
1:27PM
0.35
1:33AM
0.56
2:21PM
0.33
Monday
12
Tuesday
13
Wednesday
14
Sunrise----7:09-------7:09-------7:07---
Sunset------4:31-------4:32-------4:34-
clear
clear
clear
clear
cloud
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
clear
cloud
part cloud
cloud
cloud
part cloud
part cloud
part cloud
part cloud
cloud
cloud
Rain (mm)
------------------------
Temp. °C2-1-3-3-12422100254356767976
Feels °C (?)-7-12-14-13-10-7-3-5-5-6-7-7-4-1-3-4-3-2-1-11322
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

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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.

View detailed surf forecast for Green Harbor at:
surf-forecast.com

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