Coastguard Beach surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Tuesday 12 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
9.4° C
(Which is slightly warmer than usual)

How big are the waves at Coastguard Beach today?

The current surf forecast for Coastguard Beach at 12AM is: 0.4m 7s primary swell from a East direction (forecast issued at 07:00pm May 12). An open ocean swell of 0.2m 4s is not directed at the surf break, a second open ocean swell of 0.7m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (13 May)--
Afternoon (13 May)1.5ft (0.4m)7s
Evening (13 May)1.5ft (0.4m)7s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Heavy rain (total 25mm), heaviest during Thu night. Very mild (max 14°C on Wed night, min 8°C on Fri afternoon). Mainly fresh winds.

Tue
12
Wednesday
13
Thursday
14
Fri
15
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
1
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)
0.4
ESE
7
0.4
E
7
0.4
E
7
0.3
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
S
5
1
S
5
1.1
SE
5
1
SE
5
1
ESE
5
1.4
ESE
6
1.3
ESE
6
1.1
ESE
6
0.8
SE
8
0.8
ESE
9
0.9
ESE
9
1.2
E
10
1.3
E
10
1.3
E
10
Wave Graph
Metric surfscale
Energy kJ
17
15
15
8
5
5
4
4
57
46
46
45
51
43
50
114
120
100
90
94
130
279
327
327
Wind (km/h)
20
S
25
SSW
25
SW
25
SW
20
SW
20
SW
30
SSW
30
S
35
S
30
S
30
S
30
SSE
25
SSE
25
ESE
30
SE
30
SE
35
SE
25
SE
15
SE
5
E
10
NE
15
ESE
20
ESE
25
NE
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross-off
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
glassy
cross-on
on
on
cross-on
High Tide
8:26PM2.63m
8:51AM2.55m
9:14PM2.83m
9:45AM2.66m
10:02PM3.02m
10:38AM2.76m
Low Tide
2:07PM0.70m
2:43AM0.65m
2:56PM0.61m
3:35AM0.45m
3:46PM0.52m
4:27AM0.24m
clear
clear
clear
part cloud
part cloud
part cloud
cloud
cloud
part cloud
part cloud
cloud
cloud
cloud
cloud
cloud
light rain
mod rain
mod rain
part cloud
part cloud
cloud
cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:22
5:20
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:49
7:50
7:51
7:52
3
9
10
1
Temp °C
10
11
10
10
10
11
11
13
12
13
14
13
13
12
12
11
11
11
10
10
10
9
9
8
4
4
4
4
5
6
4
5
4
7
8
7
8
7
7
5
5
7
7
9
8
6
5
3
Swell 1
Height (m)
Direction
Period (s)
0.4
ESE
7
0.4
E
7
0.4
E
7
0.3
E
7
0.2
ESE
7
0.2
ESE
7
0.2
E
7
0.2
E
7
0.2
E
7
0.2
E
7
0.1
E
10
0.1
E
10
0.1
E
7
0.4
SW
6
0.1
E
8
0.1
SW
6
0.1
E
10
0.1
E
11
0.8
E
7
0.8
E
6
0.9
ESE
9
1.2
E
10
1.3
E
10
1.3
E
10
Energy kJ
17
15
15
8
5
5
4
4
4
4
2
2
1
9
1
1
2
2
57
51
130
279
327
327
Swell 2
Height (m)
Direction
Period (s)
0.4
NE
4
0.3
NNE
4
0.2
NNE
4
0.1
NE
4
0.2
E
7
0.2
E
6
0.2
E
6
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
7
0.1
E
7
0.2
E
7
0.1
E
12
0.1
E
12
0.1
NE
11
0.2
E
10
0.8
ESE
9
0.7
E
6
1.1
SE
10
1.1
SE
9
Energy kJ
5
4
2
1
4
3
3
2
2
2
1
1
4
3
3
5
8
94
35
216
220
Swell 3
Height (m)
Direction
Period (s)
0.1
E
11
0.1
E
11
0.1
E
11
0.1
E
13
0.1
E
12
0.1
E
10
0.1
E
10
0.1
E
11
0.1
E
13
0.1
E
13
0.2
ESE
7
0.2
E
7
Energy kJ
3
2
2
3
3
2
2
2
3
3
5
4
Wind waves
Height (m)
Direction
Period (s)
0.5
SSW
3
0.7
SW
4
0.7
SW
4
0.7
SW
4
0.6
SSW
4
0.9
SSW
4
1
S
4
1.1
S
5
1
S
5
1
S
5
1
S
5
1.1
SE
5
1
SE
5
1
ESE
5
1.4
ESE
6
1.3
ESE
6
1.1
ESE
6
0.8
SE
8
Energy kJ
6
14
16
17
11
23
40
57
46
46
45
51
43
50
114
120
100
90
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
2
1
1
1
1
1
1
1
Distance (km)
102
129
102
11
11
17
1243
1243
1243
929
426
552
392
412
377
136
65
64
65
0
64
64
64
64
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
1
2
2
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
1
2
2
2
2
2
1
1
1
1
2
3
3
3
2
2
2
2
2
3
3
3
2
Header Global
Rating
(10 max)
9
9
9
9
9
8
7
9
9
9
9
5
5
5
5
5
4
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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