Seabrook Beach Surf Break

Lat Long: 42.88° N 70.81° W

Seabrook Beach 48 hour detailed Surf Forecast

Issued: 1 pm 21 Sep 2026 (local time)

Forecast update in  hr  min

Today's Seabrook Beach sea temperature is
17.0°C
0.6° 

Seabrook Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


How big are the waves at Seabrook Beach today (21 Sep):

  • Morning surf: Morning surf (21 Sep, local time) - 1ft (0.3m), 10s period with SE swell.
  • Afternoon surf: Afternoon surf (21 Sep, local time) - 1ft (0.3m), 9s period with SE swell.
  • Evening surf: Evening surf (21 Sep, local time) - 1.5ft (0.4m), 9s period with SE swell.

The current surf forecast for Seabrook Beach at 6PM is: 0.3m 8s primary swell from a East-southeast direction and 0.5m 4s secondary swell from a East direction, 0.3m 4s secondary swell from a North-northeast direction (forecast issued at 01:00pm September 21). The wind direction is predicted to be onshore.

Time (EDT) & DateWave HeightWave Period
Morning (21 Sep)1ft (0.3m)10s
Afternoon (21 Sep)1ft (0.3m)9s
Evening (21 Sep)1.5ft (0.4m)9s

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


Short Range Forecast

Mostly dry. Very mild (max 16°C on Mon afternoon, min 9°C on Thu morning). Winds increasing (calm on Mon night, fresh winds from the ENE by Wed morning).

Mon
21
Tuesday
22
Wednesday
23
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
Rating
(10 max)
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 Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.3
SE
10
0.3
SE
9
0.3
ESE
8
0.4
SE
9
0.4
SE
9
0.4
SE
9
1.4
ENE
5
1.6
ENE
6
1.6
ENE
6
1.5
ENE
6
1.3
E
7
1.1
E
6
1
E
6
1.3
E
7
1.6
E
7
1.7
E
7
1.9
E
7
2
E
7
2
E
8
2
ESE
8
2
ESE
9
Wave Graph
Metric surfscale
Energy kJ
16
13
11
22
21
29
98
159
188
170
148
97
69
149
225
255
338
431
509
521
589
Wind (km/h)
20
NE
15
ENE
10
E
5
ENE
25
NE
20
NE
20
NE
25
NE
25
NE
25
ENE
15
ENE
15
ENE
15
NE
20
NE
25
NE
25
NE
30
ENE
30
ENE
25
ENE
20
ENE
15
NE
Wind State
cross-on
on
on
glassy
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
on
cross-on
High Tide
8:10AM2.12m
8:19PM2.42m
9:02AM2.20m
9:11PM2.50m
9:47AM2.32m
9:56PM2.59m
Low Tide
2:17PM0.61m
3:07AM0.37m
3:12PM0.51m
3:52AM0.27m
3:59PM0.39m
clear
clear
clear
part cloud
part cloud
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:31
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:43
6:40
6:38
 mm
Temp °C
15
16
16
16
14
13
12
11
12
12
13
13
13
13
12
11
12
12
12
13
13
Feels °C
11
13
14
15
9
8
7
5
6
7
9
9
9
9
7
6
6
6
7
9
9
  • 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
How to use the Wavefinder 

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Seabrook Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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