Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 1 pm 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
18.9°C
0.1° 

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 (09 Sep):

  • Morning surf: Morning surf (09 Sep, local time) - 0.5ft (0.2m), 9s period with E swell.
  • Afternoon surf: Afternoon surf (09 Sep, local time) - 0.5ft (0.2m), 9s period with E swell.
  • Evening surf: Evening surf (09 Sep, local time) - 1.5ft (0.4m), 4s period with SSE swell.

The current surf forecast for Nantasket Beach at 9PM is: 0.4m 4s primary swell from a South-southeast direction and 0.2m 8s secondary swell from a East direction, 0.1m 4s secondary swell from a Northeast direction (forecast issued at 01:00pm September 09). The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (09 Sep)0.5ft (0.2m)9s
Afternoon (09 Sep)0.5ft (0.2m)9s
Evening (09 Sep)1.5ft (0.4m)4s

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


Short Range Forecast

Mostly dry. Warm (max 30°C on Thu afternoon, min 16°C on Sat morning). Winds decreasing (fresh winds from the SW on Wed night, calm by Fri night).

Wed
9
Thursday
10
Friday
11
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
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.2
E
9
0.2
E
9
0.2
E
9
0.2
E
8
0.5
S
4
0.6
S
3
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
SE
10
0.2
ESE
10
0.2
ESE
10
0.2
ESE
10
0.1
SE
10
0.1
SE
10
0.1
SE
10
0.5
N
4
0.1
E
11
0.1
E
11
0.1
E
11
Wave Graph
Metric surfscale
Energy kJ
6
6
6
7
9
7
2
2
2
2
4
9
9
9
4
4
4
7
2
2
2
Wind (km/h)
5
SE
10
SSE
25
S
25
S
30
SSW
30
SW
30
SW
25
WSW
20
W
25
W
25
WNW
20
W
15
W
10
WNW
10
NNW
15
NNW
15
NW
10
NW
10
NW
0
W
5
WNW
Wind State
glassy
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
cross-off
glassy
cross-off
High Tide
10:22AM2.84m
10:39PM3.17m
11:12AM2.97m
11:30PM3.19m
11:59AM3.08m
Low Tide
4:21PM0.07m
4:59AM-0.15m
5:14PM-0.04m
5:46AM-0.17m
6:05PM-0.11m
part cloud
part cloud
cloud
cloud
part cloud
cloud
cloud
cloud
clear
clear
part cloud
clear
cloud
cloud
cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:16
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:04
7:01
7:00
 mm
Temp °C
20
24
24
21
23
23
23
22
27
30
29
25
22
20
18
17
20
23
24
22
20
Feels °C
21
24
22
19
21
20
20
20
26
26
25
21
19
18
16
14
17
19
21
21
18
  • 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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