Coastguard Beach surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 1 pm Monday 11 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Coastguard Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Coastguard Beach sea temperature is
9.3° C
(Which is slightly warmer than usual)

How big are the waves at Coastguard Beach today?

The current surf forecast for Coastguard Beach at 4PM is: 0.6m 8s primary swell from a East-southeast direction (forecast issued at 01:00pm May 11). An open ocean swell of 0.3m 3s is not directed at the surf break. The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (11 May)2ft (0.6m)8s
Afternoon (11 May)2ft (0.6m)8s
Evening (11 May)1.5ft (0.4m)8s

Table - waves today at Coastguard Beach. (Swell directed towards the surf break)


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Moderate rain (total 12mm), heaviest on Thu morning. Very mild (max 13°C on Wed morning, min 9°C on Mon night). Winds increasing (light winds from the SSE on Tue afternoon, fresh winds from the S by Wed afternoon).

Mon
11
Tuesday
12
Wednesday
13
Thu
14
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
0
1
0
0
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)
0.5
SE
8
0.6
ESE
8
0.6
ESE
8
0.4
E
8
0.7
ESE
8
0.7
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
7
0.4
ESE
7
0.4
E
7
0.4
E
7
0.4
E
7
0.2
ESE
7
0.2
ESE
7
0.2
E
7
0.2
E
7
1.1
S
5
1
S
5
1.1
SSE
5
1.3
SSE
5
1.2
SSE
5
1.1
SE
5
Wave Graph
Metric surfscale
Energy kJ
31
45
44
21
68
66
46
34
29
28
17
15
15
15
5
5
4
4
50
46
61
85
69
63
Wind (km/h)
10
N
15
N
15
ESE
15
S
15
SW
20
WSW
25
NW
25
NNW
25
NNW
10
N
10
SSE
20
S
25
SSW
25
WSW
20
SW
20
SW
25
SSW
25
S
35
S
30
S
30
SSE
30
SSE
30
SSE
25
SE
cross
cross
on
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross
cross
cross
cross-on
cross-on
High Tide
7:37PM2.46m
7:55AM2.46m
8:26PM2.63m
8:51AM2.55m
9:14PM2.83m
Low Tide
1:18PM0.76m
1:48AM0.84m
2:07PM0.70m
2:43AM0.65m
2:56PM0.61m
3:35AM0.45m
light rain
cloud
cloud
cloud
clear
clear
cloud
part cloud
clear
clear
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
<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>
7:47
7:49
7:50
7:51
2
Temp °C
10
10
11
9
10
9
9
9
9
10
11
11
11
11
11
11
13
12
11
12
12
13
13
12
7
6
6
5
6
5
3
3
3
6
7
5
5
5
6
6
7
6
3
6
6
8
8
7
Swell 1
Height (m)
Direction
Period (s)
0.5
SE
8
0.6
ESE
8
0.6
ESE
8
0.4
ESE
7
0.7
ESE
8
0.7
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.5
E
7
0.4
ESE
7
0.4
E
7
0.4
E
7
0.4
E
7
0.2
ESE
7
0.2
ESE
7
0.2
E
7
0.2
E
7
0.2
E
6
0.2
E
7
0.2
E
7
0.1
E
10
0.3
ESE
10
0.3
ESE
10
Energy kJ
28
45
44
21
68
66
46
34
29
28
17
15
15
15
5
5
4
4
3
4
4
2
20
20
Swell 2
Height (m)
Direction
Period (s)
0.5
E
8
0.1
E
12
0.3
N
3
0.4
E
8
0.1
E
15
0.4
SE
7
0.1
E
12
0.1
E
12
0.4
NNE
4
0.3
NNE
4
0.2
NNE
4
0.1
NE
4
0.2
E
7
0.2
E
7
0.2
E
6
0.2
ENE
6
0.2
E
7
0.2
E
10
0.2
E
10
0.1
E
13
0.1
E
8
Energy kJ
31
3
2
21
4
14
3
3
5
3
1
1
4
4
3
4
4
8
8
3
1
Swell 3
Height (m)
Direction
Period (s)
0.1
E
12
0.1
E
15
0.1
E
12
0.2
N
3
0.1
E
14
0.1
E
14
0.1
E
15
0.1
SW
4
0.1
E
11
0.1
E
11
0.1
E
11
0.1
E
11
0.1
E
10
0.1
E
13
0.1
E
12
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
NE
13
0.1
E
13
0.1
E
12
Energy kJ
3
4
3
1
4
4
4
1
2
2
2
2
2
3
3
2
2
2
2
7
4
3
Wind waves
Height (m)
Direction
Period (s)
0.4
N
4
0.4
N
3
0.3
SE
2
0.3
SW
2
0.5
WNW
3
0.9
NNW
4
0.8
N
4
0.5
N
4
0.3
SSW
2
0.6
SSW
4
0.7
SW
4
0.6
SW
4
0.6
SW
4
0.8
SSW
4
0.8
SSW
4
1.1
S
5
1
S
5
1.1
SSE
5
1.3
SSE
5
1.2
SSE
5
1.1
SE
5
Energy kJ
4
4
1
1
5
22
21
8
1
8
16
11
12
21
24
50
46
61
85
69
63
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
8
66
66
65
2
0
94
94
104
102
17
132
129
11
11
17
132
1721
852
929
431
575
375
372
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
3
1
1
2
3
3
3
3
3
2
1
1
3
3
3
2
3
1
1
2
2
2
4
4
Header Global
Rating
(10 max)
5
5
9
9
9
5
5
6
9
9
9
8
5
8
8
6
6
9
9
8
9
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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