Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 7 pm 25 Sep 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
16.9°C
0.0° 

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 (25 Sep):

  • Afternoon surf: Afternoon surf (25 Sep, local time) - 8ft (2.5m), 11s period with ENE swell.
  • Evening surf: Evening surf (25 Sep, local time) - 8ft (2.5m), 11s period with E swell.

The current surf forecast for Nantasket Beach at 11PM is: 2.5m 11s primary swell from a East direction (forecast issued at 07:00pm September 25). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (25 Sep)--
Afternoon (25 Sep)8ft (2.5m)11s
Evening (25 Sep)8ft (2.5m)11s

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


Short Range Forecast

Heavy rain (total 70mm), heaviest during Sat night. Very mild (max 16°C on Fri night, min 13°C on Fri night). Winds decreasing (strong winds from the NE on Sat night, moderate winds from the NE by Mon afternoon).

Fri
25
Saturday
26
Sunday
27
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)
2.5
ENE
11
2.5
E
11
2.5
E
11
2.5
E
11
3
E
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
10
3.5
ENE
9
3.5
ENE
9
3
ENE
9
3
ENE
9
2.5
ENE
8
2.5
ENE
8
2.4
ENE
8
Wave Graph
Metric surfscale
Energy kJ
1688
1542
1493
1583
1947
2171
2160
2155
2042
2111
2496
2443
2069
1736
1480
1225
1020
943
771
Wind (km/h)
30
NE
25
NE
30
NE
35
NE
40
NE
40
NE
40
NE
40
NE
40
NE
45
NE
45
NE
45
NE
40
ENE
40
NE
35
NE
35
NE
35
NE
35
NE
30
NE
Wind State
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
cross-on
cross-on
cross-on
cross-on
cross-on
cross-on
High Tide
11:11PM2.96m
11:32AM2.96m
11:52PM3.00m
12:11PM3.09m
Low Tide
4:59PM0.14m
5:20AM0.05m
5:40PM0.00m
5:58AM0.00m
6:23PM-0.12m
cloud
light rain
light rain
light rain
light rain
light rain
light rain
light rain
mod rain
light rain
light rain
heavy rain
light rain
light rain
light rain
light rain
light rain
light rain
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
—
—
—
6:33
—
—
—
—
—
—
—
6:35
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:36
—
—
—
—
—
—
—
6:34
—
—
—
—
—
—
—
6:31
—
—
 mm
—
1
1
2
2
1
1
3
6
5
4
13
3
1
1
2
1
1
1
Temp °C
16
16
15
13
13
13
13
13
13
13
13
14
15
15
14
14
14
15
15
Feels °C
10
11
9
6
6
6
6
6
6
5
5
6
8
9
8
8
8
10
10
  • 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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