Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Friday 22 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
12.4° C
(Which is 2.0°C warmer than normal for this time of year)

How big are the waves at Green Harbor today?

The current surf forecast for Green Harbor at 11PM is: 0.4m 4s primary swell from a Northeast direction and 0.1m 10s secondary swell from a East direction (forecast issued at 07:00pm May 22). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (22 May)--
Afternoon (22 May)0.5ft (0.1m)13s
Evening (22 May)1.5ft (0.4m)4s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 32mm), heaviest during Sun afternoon. Very mild (max 14°C on Sat morning, min 6°C on Sun morning). Winds increasing (calm on Fri night, fresh winds from the E by Sun afternoon).

Fri
22
Saturday
23
Sunday
24
Mon
25
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
0
0
0
0
0
0
0
0
1
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)
0.6
NE
5
0.4
NE
4
0.4
NE
4
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
10
0.1
E
10
0.1
E
12
0.1
SE
10
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
18
0.1
E
18
0.1
E
18
1.1
ESE
6
1.1
ESE
6
1.1
ESE
7
1
E
7
1
E
7
0.9
E
7
Wave Graph
Metric surfscale
Energy kJ
13
7
4
4
4
4
3
3
2
2
3
4
3
3
3
6
6
6
0
90
114
97
94
71
Wind (km/h)
10
ESE
10
SSE
10
SSW
10
WSW
5
NNW
5
NE
10
ENE
10
E
15
ESE
15
ESE
20
ESE
15
SE
20
SE
20
SE
30
ESE
25
ESE
35
E
30
E
25
ESE
15
E
10
NNE
20
NNW
20
N
15
NNW
cross-off
cross-on
cross-on
on
glassy
off
off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
5:02PM2.85m
5:21AM3.09m
6:04PM2.85m
6:26AM2.94m
7:06PM2.88m
7:30AM2.83m
Low Tide
11:03PM0.20m
11:42AM-0.02m
00:08AM0.24m
12:42PM0.09m
1:13AM0.25m
1:40PM0.18m
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
cloud
light rain
light rain
mod rain
mod rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:15
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:01
8:02
8:04
8:05
1
4
10
10
4
2
1
Temp °C
11
12
13
13
13
14
13
14
13
13
12
11
10
7
6
8
9
10
11
11
11
10
10
10
7
8
8
9
10
10
9
11
9
8
7
7
6
2
-1
2
2
4
7
9
9
7
6
7
Swell 1
Height (m)
Direction
Period (s)
0.6
NE
5
0.4
NE
4
0.4
NE
4
0.2
ENE
4
0.2
ENE
4
0.2
ENE
4
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.3
NE
3
0.1
SE
9
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
18
0.1
E
18
0.1
S
8
1.1
ESE
7
1
E
7
1
E
7
0.9
E
7
Energy kJ
13
7
4
1
1
1
2
2
2
2
2
3
2
2
2
6
6
1
114
97
94
71
Swell 2
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
NE
4
0.1
E
10
0.1
SE
10
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
18
0.1
E
12
0.1
S
9
0.1
E
16
0.1
S
9
0.2
ESE
8
Energy kJ
2
2
2
2
2
2
1
2
4
3
3
3
6
3
2
5
2
7
Swell 3
Height (m)
Direction
Period (s)
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
13
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
12
0.1
E
17
0.2
S
9
0.1
E
16
0.1
S
8
Energy kJ
3
4
4
4
4
4
3
3
3
3
3
3
6
6
5
1
Wind waves
Height (m)
Direction
Period (s)
0.2
ESE
2
0.2
ESE
3
0.4
E
3
0.5
ESE
4
0.7
SE
4
0.9
ESE
5
1.1
ESE
5
1.1
ESE
5
1.1
ESE
6
1.1
ESE
6
0.7
S
9
0.3
NNW
2
Energy kJ
1
1
4
7
18
35
57
66
74
90
73
1
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
2
1
2
2
2
2
4
3
4
4
3
3
2
1
1
1
1
1
Distance (km)
878
1928
878
872
818
528
794
1198
742
718
718
718
551
500
395
375
395
276
73
72
0
49
39
9
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
2
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
2
1
2
2
2
2
1
2
2
2
2
4
4
4
4
3
3
2
3
1
2
2
2
Header Global
Rating
(10 max)
8
5
5
6
7
8
7
6
5
5
5
5
5
5
5
5
5
5
5
5
5
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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