Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 7 pm 10 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
21.6° C
0.9° 

Nantasket 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 Nantasket Beach today (11 Aug):

  • Morning surf: Morning surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (11 Aug, local time) - 0.5ft (0.1m), 12s period with E swell.
  • Evening surf: Evening surf (11 Aug, local time) - 0.5ft (0.1m), 9s period with E swell.

The current surf forecast for Nantasket Beach at 1AM is: 0.1m 10s primary swell from a East direction and 0.1m 8s secondary swell from a East direction (forecast issued at 07:00pm August 10). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (11 Aug)0.5ft (0.1m)9s
Afternoon (11 Aug)0.5ft (0.1m)12s
Evening (11 Aug)0.5ft (0.1m)9s

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


Short Range Forecast

Mostly dry. Warm (max 31°C on Tue afternoon, min 21°C on Wed night). Wind will be generally light.

Mon
10
Tuesday
11
Wednesday
12
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
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
10
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
12
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
15
0.1
E
15
0.1
E
15
0.1
E
9
0.1
E
9
0.1
E
14
0.1
E
14
Wave Graph
Metric surfscale
Energy kJ
2
2
2
2
2
2
2
3
2
2
2
2
4
5
4
1
1
4
4
Wind (km/h)
5
S
10
SE
15
SW
15
WSW
15
WSW
15
W
15
WNW
15
WNW
15
WNW
5
NW
10
N
10
NW
10
NNW
10
NNW
5
NNE
10
ESE
10
SE
10
SSE
5
SW
Wind State
glassy
cross-on
cross-off
cross-off
off
off
off
cross-off
cross-off
cross-off
cross
cross-off
cross-off
cross-off
cross-on
cross-on
cross-on
cross
cross-off
High Tide
9:50PM3.23m
10:34AM2.78m
10:48PM3.30m
11:28AM2.90m
Low Tide
3:30PM0.19m
4:21AM-0.16m
4:29PM0.08m
5:15AM-0.25m
5:25PM-0.02m
clear
cloud
part cloud
clear
clear
clear
clear
clear
clear
part cloud
part cloud
cloud
part cloud
clear
clear
cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:46
5:47
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:50
7:49
 mm
Temp °C
28
26
25
23
22
24
28
31
31
28
25
23
22
22
26
27
25
24
22
Feels °C
28
26
25
24
23
24
26
28
28
27
24
22
21
21
25
25
24
23
22
  • 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 Nantasket 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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