Green Harbor surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 1 pm Saturday 02 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
8.3° C
(Which is slightly warmer than usual)

How big are the waves at Green Harbor today?

The current surf forecast for Green Harbor at 6PM is: 0.8m 9s primary swell from a East direction and 0.4m 3s secondary swell from a South direction (forecast issued at 01:00pm May 02). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (02 May)2.5ft (0.8m)9s
Afternoon (02 May)2.5ft (0.8m)9s
Evening (02 May)2.5ft (0.8m)9s

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 Sat night. Very mild (max 19°C on Mon afternoon, min 7°C on Sun morning). Winds increasing (calm on Sat night, fresh winds from the SSW by Tue morning).

Sat
2
Sunday
3
Monday
4
Tue
5
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
5 PM
8 PM
11 PM
2 AM
5 AM
8 AM
Rating
(10 max)
0
0
0
0
1
1
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><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)
0.8
E
9
0.8
E
9
0.8
E
9
0.8
E
9
0.8
E
9
0.9
E
9
0.8
E
9
0.8
E
9
0.7
E
8
0.7
E
8
0.7
E
8
0.8
E
8
0.9
E
8
1.1
E
9
1.1
ENE
9
1
ENE
9
0.9
ENE
9
0.7
ENE
9
0.5
ENE
9
0.4
ENE
8
0.3
ENE
8
0.3
ENE
8
0.2
ENE
8
0.6
S
3
Wave Graph
Metric surfscale
Energy kJ
96
96
99
101
101
127
99
96
71
69
68
89
115
186
202
169
113
82
44
24
14
14
7
7
Wind (km/h)
15
S
25
SSW
20
SW
10
SSW
5
SSW
10
NW
15
N
20
NNW
25
NNW
20
NW
15
NW
20
WNW
20
W
20
W
20
WSW
25
SW
30
WSW
20
WSW
25
SSW
25
SSW
25
SSW
20
SSW
20
SSW
30
SSW
cross-on
cross-on
on
cross-on
glassy
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
on
on
on
on
on
cross-on
High Tide
12:51PM2.64m
00:55AM2.92m
1:28PM2.58m
1:32AM2.87m
2:06PM2.52m
2:10AM2.83m
Low Tide
6:42PM0.42m
7:14AM0.12m
7:20PM0.48m
7:52AM0.16m
7:58PM0.53m
cloud
cloud
cloud
light rain
light rain
light rain
light rain
rain showers
part cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
cloud
part cloud
cloud
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:35
5:35
5:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:42
7:43
7:44
7:45
1
3
3
2
1
Temp °C
14
14
12
9
10
9
8
7
9
10
12
11
9
7
7
10
16
19
16
14
12
11
11
14
9
7
8
7
9
7
4
2
3
4
7
5
3
1
1
3
8
14
10
8
7
6
6
8
Swell 1
Height (m)
Direction
Period (s)
0.8
E
9
0.8
E
9
0.8
E
9
0.8
E
9
0.8
E
9
0.9
E
9
0.8
E
9
0.8
E
9
0.7
E
8
0.7
E
8
0.7
E
8
0.8
E
8
0.9
E
8
1.1
E
9
1.1
ENE
9
1
ENE
9
0.9
ENE
9
0.7
ENE
9
0.5
ENE
9
0.4
ENE
8
0.3
ENE
8
0.3
ENE
8
0.2
ENE
8
0.2
ENE
8
Energy kJ
96
96
99
101
101
127
99
96
71
69
68
89
115
186
202
169
113
82
44
24
14
14
7
7
Swell 2
Height (m)
Direction
Period (s)
0.2
S
4
0.5
N
4
0.4
NNE
5
0.4
NNE
5
0.3
NNE
4
0.3
NNE
4
0.1
S
8
0.1
S
8
0.2
WNW
4
0.1
NE
6
0.1
NE
5
0.1
S
5
0.1
SE
5
0.1
E
7
0.1
E
7
Energy kJ
1
9
8
8
4
4
1
1
1
1
1
1
1
1
1
Swell 3
Height (m)
Direction
Period (s)
0.2
S
7
0.1
S
7
0.1
S
8
0.2
S
8
0.2
S
8
0.2
S
8
0.1
E
5
Energy kJ
4
1
1
5
5
5
1
Wind waves
Height (m)
Direction
Period (s)
0.3
S
2
0.5
S
3
0.5
S
3
0.4
S
3
0.3
NNW
2
0.3
N
3
0.5
N
3
0.6
N
4
0.2
WNW
2
0.4
WNW
3
0.4
WNW
3
0.4
W
3
0.4
WSW
3
0.5
W
3
0.5
SW
3
0.7
SSW
4
0.6
SSW
4
0.6
SSW
3
0.5
SSW
3
0.4
SSW
3
0.6
S
3
Energy kJ
1
5
5
3
1
1
4
11
1
3
3
2
3
4
5
13
10
8
6
3
7
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
1
32
2
1
0
0
32
49
55
15
52
49
1
1
1
6
490
1
85
81
124
101
124
124
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
2
1
2
1
2
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
3
2
2
3
3
3
3
4
4
3
1
4
4
3
4
3
3
2
2
3
3
2
2
Header Global
Rating
(10 max)
5
4
4
4
4
4
4
4
5
4
4
4
4
4
5
5
5
4
5
4
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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