Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Thursday 14 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 slightly warmer than usual)

How big are the waves at Green Harbor today?

The current surf forecast for Green Harbor at 11PM is: 0.7m 6s primary swell from a East direction and 0.2m 10s secondary swell from a East direction (forecast issued at 07:00pm May 14). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (14 May)--
Afternoon (14 May)0.5ft (0.2m)10s
Evening (14 May)2.5ft (0.7m)5s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Thu night. Warm (max 26°C on Sun afternoon, min 9°C on Fri night). Wind will be generally light.

Thu
14
Friday
15
Saturday
16
Sun
17
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)
0
0
0
0
0
0
1
1
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)
0.7
E
5
0.6
E
5
0.7
E
6
0.9
E
6
0.9
E
7
0.9
E
9
1.4
E
10
1.4
E
10
1.5
ENE
10
1.5
ENE
10
1.4
ENE
10
1.2
ENE
10
1.1
ENE
9
1
E
9
0.9
ENE
9
0.8
E
9
0.7
E
9
0.6
E
9
0.6
E
9
0.5
E
8
0.5
E
8
0.4
E
8
0.4
E
8
0.3
ESE
8
Wave Graph
Metric surfscale
Energy kJ
27
19
35
68
74
139
363
377
399
399
341
276
225
173
141
106
78
56
52
35
35
22
21
13
Wind (km/h)
10
ESE
0
WNW
10
NW
10
NW
10
WNW
10
NW
10
NNW
15
N
20
NNE
15
NNE
10
NW
10
WNW
10
WSW
15
WSW
15
WSW
20
SSW
25
SSW
30
SW
25
SW
25
SW
20
SW
15
SW
5
WNW
5
SSE
cross-off
glassy
cross
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
on
on
on
on
on
on
on
cross-on
glassy
High Tide
10:09PM3.11m
10:43AM2.85m
10:57PM3.28m
11:34AM2.91m
11:45PM3.42m
12:24PM2.95m
Low Tide
3:54PM0.22m
4:30AM-0.09m
4:42PM0.15m
5:20AM-0.26m
5:30PM0.09m
6:11AM-0.37m
light rain
light rain
rain showers
cloud
cloud
cloud
cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:54
7:55
7:57
7:58
1
1
2
Temp °C
12
12
11
11
10
10
11
11
10
9
9
9
10
11
18
21
22
16
14
14
15
18
23
25
11
12
10
9
8
8
9
8
6
6
7
7
7
7
15
16
17
11
9
9
11
16
23
25
Swell 1
Height (m)
Direction
Period (s)
0.7
E
5
0.6
E
5
0.7
E
6
0.9
E
6
0.9
E
7
0.9
E
9
1.4
E
10
1.4
E
10
1.5
ENE
10
1.5
ENE
10
1.4
ENE
10
1.2
ENE
10
1.1
ENE
9
1
E
9
0.9
ENE
9
0.8
E
9
0.7
E
9
0.6
E
9
0.6
E
9
0.5
E
8
0.5
E
8
0.4
E
8
0.4
E
8
0.3
ESE
8
Energy kJ
27
19
35
68
74
139
363
377
399
399
341
276
225
173
141
106
78
56
52
35
35
22
21
13
Swell 2
Height (m)
Direction
Period (s)
0.2
E
10
0.4
ENE
6
0.2
E
10
0.2
S
6
0.5
E
9
0.8
ENE
7
0.3
S
9
0.1
S
9
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
8
0.1
S
8
0.4
S
5
0.4
SSW
6
0.3
S
6
Energy kJ
8
14
8
3
42
60
16
2
6
6
6
6
6
6
6
1
8
13
7
Swell 3
Height (m)
Direction
Period (s)
0.3
SSE
5
0.2
E
10
0.2
S
6
0.3
ESE
8
0.3
S
7
0.1
S
10
0.4
S
10
0.1
SE
8
0.1
S
8
0.1
S
8
0.1
S
8
Energy kJ
5
8
3
14
9
2
30
3
1
1
1
Wind waves
Height (m)
Direction
Period (s)
0.5
N
5
0.4
NNE
4
0.3
SSW
2
0.6
S
3
0.6
SSW
3
0.6
SSW
3
0.6
SSW
3
0.4
SW
3
0.3
WSW
3
Energy kJ
11
6
1
7
9
8
8
3
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
2
2
2
2
1
1
1
1
1
1
1
1
1
2
1
1
Distance (km)
96
6
15
15
1
1
0
0
49
49
1
1
1
1
1
2
2
81
124
6
81
57
57
57
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
2
3
3
3
2
3
3
3
2
2
2
1
1
1
1
1
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
1
2
3
3
3
3
3
2
3
3
3
5
2
3
2
2
2
3
4
1
4
1
2
Header Global
Rating
(10 max)
5
4
6
5
5
5
5
5
5
5
5
5
4
5
5
5
5
5
4
5
8
8
9
5
  • 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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