Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Friday 15 May 2026 EDT
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
9.8° 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 2AM is: 1.2m 10s primary swell from a East-northeast direction (forecast issued at 07:00pm May 15). An open ocean swell of 0.2m 8s is not directed at the surf break. The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (16 May)3.5ft (1.0m)9s
Afternoon (16 May)2.5ft (0.8m)9s
Evening (16 May)2ft (0.6m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Mostly dry. Warm (max 27°C on Sun afternoon, min 10°C on Fri night). Winds decreasing (fresh winds from the SW on Sat night, calm by Sun afternoon).

Fri
15
Saturday
16
Sunday
17
Mon
18
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
11 PM
2 AM
5 AM
8 AM
11 AM
2 PM
Rating
(10 max)
1
1
1
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.4
ENE
10
1.3
ENE
10
1.3
ENE
10
1.2
ENE
10
1.1
E
9
1
E
9
0.9
ENE
9
0.8
ENE
9
0.7
E
9
0.7
E
9
0.6
E
9
0.5
E
8
0.5
E
8
0.4
E
8
0.4
E
8
0.3
E
8
0.3
ESE
8
0.3
ESE
8
0.3
E
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.3
SE
8
Wave Graph
Metric surfscale
Energy kJ
386
342
335
276
212
173
141
110
79
78
55
35
35
24
23
12
13
12
11
6
6
6
6
9
Wind (km/h)
15
NNE
15
NNW
5
NNW
10
WSW
15
SW
20
WSW
15
WSW
20
SSW
30
SSW
30
SSW
30
SW
25
SW
20
WSW
15
W
10
NW
5
WSW
5
SSW
15
SW
10
NNW
15
NNE
10
ENE
10
E
10
ESE
15
ESE
off
cross-off
cross-off
on
on
on
on
on
on
on
on
on
on
cross-on
cross
cross-on
glassy
on
cross-off
off
cross-off
cross-off
cross-off
cross-off
High Tide
10:57PM3.28m
11:34AM2.91m
11:45PM3.42m
12:24PM2.95m
00:35AM3.51m
1:15PM2.96m
Low Tide
4:42PM0.15m
5:20AM-0.26m
5:30PM0.09m
6:11AM-0.37m
6:20PM0.04m
7:02AM-0.43m
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
clear
part cloud
clear
cloud
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:55
7:57
7:58
7:59
Temp °C
9
10
10
11
11
12
18
21
20
16
14
15
15
18
23
25
27
23
22
18
15
15
16
18
6
7
8
9
8
8
14
16
14
10
8
10
11
16
20
23
26
21
20
15
12
12
12
13
Swell 1
Height (m)
Direction
Period (s)
1.4
ENE
10
1.3
ENE
10
1.3
ENE
10
1.2
ENE
10
1.1
E
9
1
E
9
0.9
ENE
9
0.8
ENE
9
0.7
E
9
0.7
E
9
0.6
E
9
0.5
E
8
0.5
E
8
0.4
E
8
0.4
E
8
0.3
E
8
0.3
ESE
8
0.3
ESE
8
0.3
E
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
Energy kJ
386
342
335
276
212
173
141
110
79
78
55
35
35
22
21
12
13
12
11
6
6
6
6
6
Swell 2
Height (m)
Direction
Period (s)
0.2
S
9
0.2
S
8
0.2
S
8
0.2
S
8
0.2
S
9
0.2
S
9
0.2
S
9
0.1
SE
6
0.4
E
8
0.4
SE
8
0.1
S
8
0.1
S
6
0.1
SE
4
0.3
S
4
0.2
S
4
0.2
S
7
0.2
S
7
0.3
SE
8
Energy kJ
6
6
6
6
6
6
6
1
22
23
1
1
1
3
2
4
4
9
Swell 3
Height (m)
Direction
Period (s)
0.4
SE
8
0.3
E
8
0.3
E
8
0.1
S
8
0.2
S
8
0.2
S
7
0.2
S
7
0.2
S
8
0.1
E
14
Energy kJ
24
12
12
1
4
4
4
5
4
Wind waves
Height (m)
Direction
Period (s)
0.4
NNE
3
0.4
SSW
3
0.7
S
4
0.6
SSW
4
0.6
SSW
3
0.6
SSW
3
0.4
SW
3
0.2
WSW
2
0.3
SSW
4
0.3
NNE
3
0.4
NE
3
0.5
NE
4
0.4
ENE
4
0.4
ENE
4
Energy kJ
4
2
12
10
8
8
3
1
3
1
4
6
5
4
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
0
0
1
1
1
1
2
6
101
1198
85
81
43
2
52
94
94
72
74
73
109
106
515
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
2
2
3
2
2
2
1
1
1
1
2
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
3
3
3
4
2
4
2
4
3
3
4
2
2
4
4
4
1
3
4
4
3
3
1
Header Global
Rating
(10 max)
5
5
5
5
4
5
6
6
5
4
5
4
7
9
9
4
4
4
4
5
4
4
4
4
  • 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

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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