Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 1 am 27 Sep 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
16.3°C
0.4° 

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 (27 Sep):

  • Morning surf: Morning surf (27 Sep, local time) - 11ft (3.5m), 9s period with ENE swell.
  • Afternoon surf: Afternoon surf (27 Sep, local time) - 10ft (3.0m), 9s period with ENE swell.
  • Evening surf: Evening surf (27 Sep, local time) - 8ft (2.5m), 8s period with ENE swell.

The current surf forecast for Nantasket Beach at 6AM is: 3.5m 9s primary swell from a East-northeast direction (forecast issued at 01:00am September 27). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (27 Sep)11ft (3.5m)9s
Afternoon (27 Sep)10ft (3.0m)9s
Evening (27 Sep)8ft (2.5m)8s

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


Short Range Forecast

Heavy rain (total 83mm), heaviest during Sun morning. Very mild (max 16°C on Sun morning, min 13°C on Mon night). Winds decreasing (strong winds from the ENE on Sun morning, light winds from the NNW by Tue night).

Sunday
27
Monday
28
Tuesday
29
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
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
1
0
0
1
1
1
1
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
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
2.5
ENE
8
2.4
ENE
9
2.4
ENE
9
2.3
ENE
9
2.4
ENE
8
2.1
ENE
8
2
ENE
8
2.1
ENE
8
1.5
E
8
1.3
E
8
1.2
E
8
1.1
E
8
1.1
ENE
9
1.1
ENE
9
1.1
ENE
9
1.3
ENE
9
Wave Graph
Metric surfscale
Energy kJ
2496
2226
2043
1716
1374
1183
1057
964
891
867
867
803
741
572
502
480
273
213
190
165
193
197
202
238
Wind (km/h)
45
NE
45
NE
45
ENE
40
ENE
35
ENE
30
NE
30
NE
30
NE
30
NE
30
NE
30
NE
35
NNE
30
NNE
25
NE
20
NNE
20
N
20
N
25
NNW
20
NNW
20
NNW
15
NNW
15
NNW
10
N
10
NNW
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
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
11:52PM3.00m
12:11PM3.09m
00:35AM3.01m
12:50PM3.19m
1:19AM2.98m
1:33PM3.25m
Low Tide
5:58AM0.00m
6:23PM-0.12m
6:38AM-0.02m
7:07PM-0.20m
7:20AM-0.00m
7:53PM-0.22m
mod rain
mod rain
heavy rain
mod rain
light rain
light rain
light rain
light rain
light rain
heavy rain
heavy rain
light rain
mod rain
light rain
light rain
light rain
light rain
light rain
light rain
cloud
cloud
cloud
cloud
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
—
6:35
—
—
—
—
—
—
—
6:35
—
—
—
—
—
—
—
6:37
—
—
—
—
—
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
—
6:31
—
—
—
—
—
—
—
6:30
—
—
—
—
—
—
—
6:29
—
—
 mm
6
6
19
8
4
1
1
1
2
11
14
5
6
5
2
1
1
1
1
—
—
—
—
—
Temp °C
15
15
15
16
16
15
15
15
15
14
14
14
14
14
15
15
14
13
13
13
13
14
14
14
Feels °C
8
8
8
10
11
11
11
11
11
9
9
9
9
10
13
13
11
9
10
10
10
12
13
13
  • 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