Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 7 pm 19 Oct 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
14.3°C
0.6° 

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 (19 Oct):

  • Afternoon surf: Afternoon surf (19 Oct, local time) - 1.5ft (0.4m), 5s period with E swell.
  • Evening surf: Evening surf (19 Oct, local time) - 1.5ft (0.4m), 9s period with ESE swell.

The current surf forecast for Nantasket Beach at 11PM is: 0.8m 9s primary swell from a East direction (forecast issued at 07:00pm October 19). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (19 Oct)--
Afternoon (19 Oct)1.5ft (0.4m)5s
Evening (19 Oct)1.5ft (0.4m)9s

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


Short Range Forecast

Mostly dry. Very mild (max 12°C on Tue afternoon, min 7°C on Wed morning). Wind will be generally light.

Mon
19
Tuesday
20
Wednesday
21
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)
0.6
E
5
0.4
ESE
9
0.8
E
9
1
E
10
1.2
E
10
1.3
E
10
1.4
E
10
1.4
E
10
1.5
E
10
1.6
ENE
9
1.6
ENE
9
2
ENE
8
2.1
ENE
8
2
ENE
8
1.8
ENE
8
1.7
ENE
8
1.7
ENE
8
1.8
ENE
8
1.5
E
8
Wave Graph
Metric surfscale
Energy kJ
18
26
101
183
266
340
394
377
417
461
432
536
547
487
414
366
361
479
331
Wind (km/h)
10
ENE
10
NE
15
N
15
N
15
NNE
20
N
25
NNE
20
NE
15
NE
15
NE
20
NE
25
NE
30
NE
25
NE
25
NE
20
NE
20
NE
15
NE
15
NNE
Wind State
on
cross-on
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
6:28PM2.55m
7:12AM2.36m
7:22PM2.58m
8:03AM2.46m
8:16PM2.64m
Low Tide
00:53AM0.48m
1:09PM0.65m
1:44AM0.43m
2:03PM0.55m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
part cloud
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
7:01
—
—
—
—
—
—
—
7:01
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:55
—
—
—
—
—
—
—
5:53
—
—
—
—
—
—
—
5:52
—
—
 mm
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
9
9
9
8
9
9
11
12
12
12
11
10
8
7
7
8
7
8
8
Feels °C
6
6
6
4
5
5
5
7
8
9
7
4
2
1
1
3
2
4
4
  • 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.


Nearest locationNearest