Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Tuesday 05 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
8.6° C
(Which is slightly warmer than usual)

How big are the waves at Green Harbor today?

The current surf forecast for Green Harbor at 3AM is: 0.9m 4s primary swell from a South-southwest direction and 0.2m 8s secondary swell from a East-southeast direction, 0.1m 10s secondary swell from a East direction (forecast issued at 07:00pm May 05). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (06 May)3ft (0.9m)4s
Afternoon (06 May)3ft (0.9m)4s
Evening (06 May)2.5ft (0.8m)4s

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 7mm), mostly falling on Wed night. Very mild (max 18°C on Wed morning, min 7°C on Thu night). Winds decreasing (strong winds from the SSW on Tue night, calm by Thu afternoon).

Tue
5
Wednesday
6
Thursday
7
Fri
8
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
0
0
0
0
Swell
Height Map
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
<span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span><span class="translation_missing" title="translation missing: en.components.forecast-table.maps.snow_map">Snow Map</span>
Wave
Height (m)
Direction
Period (s)
1
S
4
1
SSW
4
0.9
SSW
4
0.9
SSW
4
0.9
SSW
4
0.9
SSW
4
1
S
4
1
S
4
0.9
SSW
4
0.9
SSW
4
0.7
SSW
4
0.4
SE
6
0.4
SE
5
0.4
SE
5
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
8
0.2
E
8
0.4
E
10
0.5
E
10
Wave Graph
Metric surfscale
Energy kJ
30
34
27
28
23
28
34
34
28
24
13
8
7
7
6
6
6
6
6
6
6
6
35
48
Wind (km/h)
35
SSW
40
SSW
35
SW
35
SSW
35
SSW
35
SSW
35
SSW
40
SSW
35
SSW
35
SSW
25
SSW
15
WSW
15
NW
20
NW
5
WNW
5
E
0
ESE
5
WSW
15
WNW
15
W
15
W
20
WNW
10
WNW
0
SSW
on
on
on
on
on
on
on
on
cross-on
on
on
cross-on
cross
cross
cross-on
glassy
glassy
cross-on
cross
cross-on
cross-on
cross-on
cross
glassy
High Tide
2:46PM2.46m
2:51AM2.78m
3:29PM2.41m
3:35AM2.72m
4:15PM2.37m
4:24AM2.67m
Low Tide
8:39PM0.58m
9:15AM0.27m
9:23PM0.62m
10:02AM0.33m
10:11PM0.66m
10:51AM0.38m
clear
cloud
clear
clear
clear
part cloud
cloud
cloud
cloud
light rain
light rain
light rain
light rain
part cloud
part cloud
clear
clear
part cloud
cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:31
5:31
5:30
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:45
7:45
7:46
7:47
2
2
2
1
Temp °C
17
15
15
14
14
15
18
17
16
14
13
13
11
10
13
14
15
15
12
9
7
9
12
14
10
7
8
7
8
9
12
10
10
8
9
11
8
5
10
12
13
12
7
4
2
3
7
11
Swell 1
Height (m)
Direction
Period (s)
0.1
SE
7
0.3
SE
7
0.2
ESE
7
0.2
ESE
8
0.3
SE
6
0.3
SE
6
0.1
E
10
0.3
SE
6
0.3
SE
6
0.4
SE
6
0.4
SE
6
0.4
SE
6
0.4
SE
5
0.4
SE
5
0.3
ESE
5
0.2
ESE
5
0.2
E
9
0.3
ESE
5
0.2
ESE
5
0.2
E
9
0.2
E
8
0.2
E
8
0.4
E
10
0.5
E
10
Energy kJ
2
7
5
6
5
5
2
5
5
11
12
8
7
7
5
3
6
5
2
6
6
6
35
48
Swell 2
Height (m)
Direction
Period (s)
0.1
E
9
0.1
E
9
0.2
SSE
6
0.1
E
10
0.1
E
9
0.1
E
9
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.2
E
10
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
9
0.2
ESE
5
0.2
ESE
5
0.2
ESE
8
0.2
ESE
7
Energy kJ
2
2
3
2
2
2
2
2
2
2
7
7
7
6
6
6
6
2
2
6
5
Swell 3
Height (m)
Direction
Period (s)
0.1
E
9
0.2
E
10
0.1
E
7
0.1
E
7
0.1
E
9
0.1
E
9
0.1
SE
9
0.1
SE
8
0.1
E
11
0.2
S
6
0.2
S
7
Energy kJ
2
7
1
1
2
2
3
3
2
3
3
Wind waves
Height (m)
Direction
Period (s)
1
S
4
1
SSW
4
0.9
SSW
4
0.9
SSW
4
0.9
SSW
4
0.9
SSW
4
1
S
4
1
S
4
0.9
SSW
4
0.9
SSW
4
0.7
SSW
4
0.3
SW
3
0.2
N
3
0.3
ESE
5
0.2
NNW
2
0.2
NNW
3
0.4
SSW
7
Energy kJ
30
34
27
28
23
28
34
34
28
24
13
2
1
5
1
1
18
Nearest Offshore or Glassy
Rating
(10 max)
1
1
3
1
1
1
1
1
1
1
2
2
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
1926
593
91
1623
1206
1206
1206
1206
333
543
124
86
72
72
72
92
85
57
85
106
58
56
6
6
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
3
3
2
2
3
3
2
3
2
2
2
3
3
2
1
1
2
1
3
2
2
2
2
Header Global
Rating
(10 max)
5
5
5
7
9
9
6
6
4
7
6
5
5
5
6
6
6
6
7
7
7
6
7
8
  • 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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