Coastguard Beach surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 pm Wednesday 20 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
10.4° C
(Which is normal for this time of year)

How big are the waves at Coastguard Beach today?

The current surf forecast for Coastguard Beach at 2AM is: 0.5m 6s primary swell from a South direction and 0.2m 9s secondary swell from a East-southeast direction (forecast issued at 07:00pm May 20). An open ocean swell of 0.5m 4s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 May)2ft (0.6m)4s
Afternoon (21 May)2ft (0.6m)4s
Evening (21 May)1.5ft (0.5m)5s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 3mm), mostly falling on Wed night. Warm (max 23°C on Wed night, min 9°C on Thu afternoon). Wind will be generally light.

Wed
20
Thursday
21
Friday
22
Sat
23
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
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
0.2
ESE
9
0.2
ESE
9
0.4
SSE
6
0.5
S
6
0.4
S
7
0.6
NNE
4
0.6
NE
4
0.6
NE
4
0.6
NE
5
0.5
NE
5
0.2
S
6
0.2
ESE
9
0.2
S
6
0.1
E
13
0.6
NE
4
0.6
NE
4
0.4
NE
4
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.1
E
13
0.1
E
10
0.2
ESE
10
0.1
SE
10
Wave Graph
Metric surfscale
Energy kJ
8
8
13
21
14
9
14
16
15
12
3
8
3
3
11
8
5
10
10
10
4
2
9
4
Wind (km/h)
25
SW
20
WSW
20
W
15
N
20
NNE
20
NE
20
NE
15
ENE
10
E
10
SSE
5
S
0
ESE
10
NNE
20
NE
15
NE
15
NE
10
ENE
10
ESE
15
SE
10
S
5
NNE
10
NE
10
E
10
E
cross-off
cross-off
off
cross-off
cross
cross-on
cross-on
on
on
cross-on
cross
glassy
cross
cross-on
cross-on
cross-on
on
on
cross-on
cross
cross
cross-on
on
on
High Tide
3:10PM2.84m
3:21AM3.17m
4:09PM2.78m
4:22AM3.01m
5:10PM2.73m
5:25AM2.85m
Low Tide
9:07PM0.45m
9:52AM0.11m
10:08PM0.53m
10:51AM0.24m
11:13PM0.61m
11:50AM0.38m
part cloud
rain showers
light rain
light rain
cloud
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
clear
clear
clear
clear
clear
cloud
cloud
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:13
5:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:57
7:58
7:59
8:00
1
1
1
Temp °C
25
23
23
18
15
13
10
9
10
11
11
11
11
11
11
11
11
11
12
11
11
12
14
13
22
22
21
15
11
8
4
5
6
7
8
9
8
5
6
6
7
7
6
7
8
8
10
9
Swell 1
Height (m)
Direction
Period (s)
0.2
ESE
9
0.2
S
7
0.4
SSE
6
0.5
S
6
0.4
S
7
0.3
SSE
7
0.3
S
6
0.3
S
6
0.6
NE
5
0.5
NE
5
0.4
NE
5
0.4
NE
4
0.2
S
6
0.2
S
6
0.2
ESE
10
0.1
SE
10
0.4
NE
4
0.4
NE
4
0.3
NE
4
0.2
ENE
3
0.1
SE
7
0.1
SE
7
0.2
ESE
10
0.1
SE
10
Energy kJ
8
4
13
21
14
9
7
7
15
12
6
4
3
3
11
4
5
3
2
1
2
2
9
4
Swell 2
Height (m)
Direction
Period (s)
0.1
E
14
0.2
ESE
9
0.4
SW
4
0.2
ESE
9
0.2
ESE
9
0.2
ESE
9
0.2
ESE
9
0.2
ESE
9
0.2
S
6
0.2
S
6
0.2
S
6
0.2
S
6
0.1
SE
9
0.1
SE
9
0.1
S
6
0.1
S
6
0.1
SE
10
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.1
E
10
0.1
E
10
0.1
E
14
Energy kJ
4
8
6
8
8
8
8
8
3
3
3
3
3
3
1
1
4
10
10
10
2
2
4
Swell 3
Height (m)
Direction
Period (s)
0.1
E
14
0.2
ESE
9
0.1
E
15
0.1
E
15
0.1
E
15
0.1
E
13
0.2
ESE
9
0.2
ESE
9
0.2
ESE
4
0.2
ESE
9
0.1
E
13
0.1
SW
6
0.1
S
6
0.1
S
6
0.2
SSE
6
0.1
E
13
0.1
E
13
0.1
E
13
Energy kJ
4
8
4
4
4
3
7
8
1
8
3
1
1
1
3
4
4
3
Wind waves
Height (m)
Direction
Period (s)
1
SSW
4
0.9
SW
4
0.4
NW
4
0.5
NNW
4
0.5
N
4
0.6
NNE
4
0.6
NE
4
0.6
NE
4
0.3
ESE
4
0.3
NE
4
0.4
NE
3
0.6
NE
4
0.6
NE
4
Energy kJ
42
27
4
10
7
8
14
16
3
3
3
8
8
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
2
2
1
1
1
1
Distance (km)
167
11
10
136
66
139
143
139
313
611
313
312
613
620
822
819
822
842
842
842
215
819
867
867
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
2
1
1
3
3
2
3
1
2
1
2
2
2
2
2
1
1
2
2
2
2
2
1
Header Global
Rating
(10 max)
5
5
5
5
5
5
4
5
4
4
5
7
8
7
6
5
5
6
7
7
8
8
7
6
  • 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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