Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 7 pm 21 Oct 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
14.1°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 (22 Oct):

  • Morning surf: Morning surf (22 Oct, local time) - 5.5ft (1.7m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (22 Oct, local time) - 6ft (1.9m), 9s period with E swell.
  • Evening surf: Evening surf (22 Oct, local time) - 7ft (2.2m), 8s period with ENE swell.

The current surf forecast for Nantasket Beach at 2AM is: 2.1m 9s primary swell from a East-northeast direction and 2.0m 9s secondary swell from a East direction (forecast issued at 07:00pm October 21). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (22 Oct)5.5ft (1.7m)9s
Afternoon (22 Oct)6ft (1.9m)9s
Evening (22 Oct)7ft (2.2m)8s

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


Short Range Forecast

Mostly dry. Very mild (max 15°C on Thu afternoon, min 6°C on Fri night). Winds decreasing (fresh winds from the N on Thu morning, calm by Sat afternoon).

Wed
21
Thursday
22
Friday
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
Rating
(10 max)
0
0
0
1
1
0
0
1
2
0
0
0
0
1
0
0
1
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)
2.2
ENE
8
2.2
ENE
9
2.1
ENE
9
2.1
ENE
9
2.2
ENE
9
1.7
E
9
1.6
E
9
2.2
ENE
9
2
ENE
8
2.2
ENE
8
2.2
NE
8
2.4
NE
8
2.4
NE
8
2.3
NE
8
2.2
NE
8
2
NE
9
2.1
NE
9
1.7
ENE
9
1.6
ENE
9
Wave Graph
Metric surfscale
Energy kJ
694
724
677
729
721
445
386
699
560
651
634
746
765
736
687
594
711
475
395
Wind (km/h)
30
NE
25
NE
30
NNE
30
NNE
30
NNE
30
N
35
N
30
N
20
NNE
25
NNE
30
N
30
N
25
N
25
N
25
NNE
20
NNE
20
NE
15
NE
15
NNE
Wind State
cross-on
cross-on
cross-on
cross
cross
cross
cross
cross
cross
cross-on
cross
cross
cross
cross
cross
cross-on
cross-on
cross-on
cross-on
High Tide
8:16PM2.64m
8:50AM2.61m
9:07PM2.72m
9:34AM2.78m
9:54PM2.82m
Low Tide
2:03PM0.55m
2:33AM0.35m
2:54PM0.39m
3:18AM0.25m
3:43PM0.21m
cloud
cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
clear
cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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7:03
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7:05
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<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
5:52
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5:51
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5:50
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 mm
—
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—
—
—
—
—
—
—
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Temp °C
9
9
10
10
9
9
11
14
15
13
11
9
8
7
8
10
9
10
10
Feels °C
3
3
4
3
3
2
3
7
9
7
3
1
1
0
1
4
3
5
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
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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