Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Wednesday 13 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
9.6° C
(Which is slightly warmer than usual)

How big are the waves at Green Harbor today?

The current surf forecast for Green Harbor at 2AM is: 0.2m 10s primary swell from a East direction and 0.2m 7s secondary swell from a East direction, 0.5m 3s secondary swell from a South-southeast direction (forecast issued at 07:00pm May 13). The wind direction is predicted to be cross-onshore.

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

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 10mm), heaviest on Thu night. Warm (max 22°C on Sat afternoon, min 9°C on Fri afternoon). Winds decreasing (fresh winds from the SSW on Wed night, light winds from the SSE by Thu night).

Wed
13
Thursday
14
Friday
15
Sat
16
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
0
0
0
0
0
0
1
2
2
2
2
1
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
S
4
0.7
S
4
0.2
E
10
0.2
E
10
0.6
SSE
5
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
1.6
E
7
1.3
E
7
1.2
E
7
1.5
E
10
1.6
E
10
1.6
ENE
10
1.6
ENE
10
1.5
ENE
10
1.4
ENE
10
1.2
ENE
9
1.1
ENE
9
1
E
9
0.9
ENE
9
0.8
E
9
Wave Graph
Metric surfscale
Energy kJ
13
13
8
8
15
8
8
8
8
8
226
159
155
431
509
463
454
391
334
259
216
169
138
103
Wind (km/h)
30
SSW
30
SSW
25
S
25
S
20
SSE
25
SSE
25
ESE
25
ESE
25
ESE
20
SE
10
S
5
SSE
5
E
15
ENE
15
NE
20
NE
15
NNE
15
NNE
10
W
20
W
15
WSW
20
WSW
15
WSW
15
WSW
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross
cross-on
cross
cross-off
cross-off
off
off
off
cross-off
cross-on
cross-on
on
cross-on
cross-on
cross-on
High Tide
9:22PM2.92m
9:53AM2.77m
10:09PM3.11m
10:43AM2.85m
10:57PM3.28m
11:34AM2.91m
Low Tide
3:07PM0.29m
3:39AM0.10m
3:54PM0.22m
4:30AM-0.09m
4:42PM0.15m
5:20AM-0.26m
cloud
cloud
cloud
cloud
cloud
part cloud
cloud
cloud
light rain
mod rain
cloud
cloud
clear
cloud
cloud
cloud
light rain
cloud
part cloud
part cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:22
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:53
7:54
7:55
7:57
3
6
1
Temp °C
16
14
14
14
13
14
13
14
12
12
12
12
12
11
10
9
9
9
9
9
10
12
18
22
9
8
9
9
9
9
8
9
8
9
10
11
11
8
7
5
5
6
7
5
6
8
15
19
Swell 1
Height (m)
Direction
Period (s)
0.2
E
7
0.2
E
7
0.2
E
7
0.2
E
7
0.2
E
7
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
1.3
E
6
1.3
E
7
1.2
E
7
1.5
E
10
1.6
E
10
1.6
ENE
10
1.6
ENE
10
1.5
ENE
10
1.4
ENE
10
1.2
ENE
9
1.1
ENE
9
1
E
9
0.9
ENE
9
0.8
E
9
Energy kJ
4
4
4
4
4
8
8
8
8
8
136
159
155
431
509
463
454
391
334
259
216
169
138
103
Swell 2
Height (m)
Direction
Period (s)
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
0.2
E
10
0.2
S
7
0.5
E
9
0.1
S
11
0.3
S
10
0.2
S
9
0.2
S
9
0.2
S
9
0.2
S
8
0.2
S
8
0.2
S
8
0.2
S
8
0.2
WNW
3
0.2
S
8
Energy kJ
8
8
8
8
8
3
43
2
17
7
6
6
6
6
6
6
1
6
Swell 3
Height (m)
Direction
Period (s)
0.1
SE
7
0.1
SE
7
0.1
E
7
0.4
S
7
0.2
S
7
0.2
S
7
0.1
S
10
0.1
S
10
0.2
SSW
3
Energy kJ
2
2
1
15
4
4
2
2
1
Wind waves
Height (m)
Direction
Period (s)
0.7
S
4
0.7
S
4
0.6
S
3
0.5
SSE
3
0.6
SSE
5
0.8
SE
5
1.1
ESE
5
1.3
ESE
6
1.2
ESE
5
1.3
E
6
1.6
E
7
0.9
ENE
10
0.6
NNE
5
0.3
W
2
0.3
WSW
2
0.2
SSW
4
Energy kJ
13
13
8
6
15
26
69
98
87
114
226
173
17
1
1
2
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
2
1
1
2
2
2
2
1
2
1
1
1
1
1
Distance (km)
888
959
647
341
466
298
221
124
124
102
1
2
0
0
0
0
0
0
1
1
1
1
1
1
Best forecast wave conditions in Massachusetts
Rating
(10 max)
2
2
1
2
2
2
2
1
3
2
2
2
2
1
Best forecast wave conditions in United States
Rating
(10 max)
1
1
1
2
2
3
3
2
1
1
2
3
2
3
2
2
4
3
3
2
2
2
3
1
Header Global
Rating
(10 max)
9
9
9
5
4
5
4
5
5
4
5
5
5
5
5
5
5
5
5
5
4
5
5
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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