Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 6 am 12 Nov 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
12.2°C
1.3° 

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 (12 Nov):

  • Morning surf: Morning surf (12 Nov, local time) - 0.5ft (0.1m), 13s period with E swell.
  • Afternoon surf: Afternoon surf (12 Nov, local time) - 1.5ft (0.5m), 4s period with E swell.
  • Evening surf: Evening surf (12 Nov, local time) - 5ft (1.6m), 6s period with E swell.

The current surf forecast for Nantasket Beach at 9AM is: 0.1m 13s primary swell from a East direction and 0.1m 9s secondary swell from a East direction (forecast issued at 06:00am November 12). The wind direction is predicted to be onshore.

Time (EST) & DateWave HeightWave Period
Morning (12 Nov)0.5ft (0.1m)13s
Afternoon (12 Nov)1.5ft (0.5m)4s
Evening (12 Nov)5ft (1.6m)6s

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


Short Range Forecast

Heavy rain (total 27mm), heaviest during Thu night. Very mild (max 12°C on Thu morning, min 3°C on Sat night). Winds increasing (light winds from the ESE on Thu morning, fresh winds from the NNE by Thu night).

Thursday
12
Friday
13
Saturday
14
Sun
15
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
10 AM
1 PM
4 PM
7 PM
10 PM
1 AM
4 AM
7 AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
1
1
2
1
1
1
1
1
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
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.1
E
9
0.1
E
9
0.1
E
13
0.1
E
12
0.6
E
4
1.2
E
5
1.8
ENE
6
2.2
ENE
7
2.3
ENE
7
2.1
NE
7
2.3
NE
8
2.1
NE
8
1.8
NE
8
1.7
NE
8
1.4
ENE
7
1.3
ENE
7
1.2
ENE
7
0.7
E
7
1
ENE
7
0.9
ENE
7
0.6
NE
7
0.5
E
7
0.6
NE
6
0.4
NE
5
0.4
NE
5
0.3
NE
5
Wave Graph
Metric surfscale
Energy kJ
2
2
3
3
9
63
240
421
544
457
589
499
375
326
207
164
138
51
99
70
28
23
21
8
10
4
Wind (km/h)
0
E
5
ENE
10
ESE
15
ESE
25
E
35
E
30
ENE
35
NE
35
NE
35
NNE
35
NNE
30
NNE
25
N
20
N
15
NW
15
NNW
10
NW
10
NW
10
NW
10
NW
15
NW
15
NW
15
WNW
15
WNW
20
WNW
20
WNW
Wind State
glassy
glassy
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
High Tide
12:47PM2.91m
1:28AM2.50m
1:29PM2.83m
2:10AM2.44m
2:12PM2.75m
2:56AM2.39m
Low Tide
6:37AM0.43m
7:14PM0.12m
7:18AM0.49m
7:55PM0.21m
8:01AM0.55m
8:39PM0.29m
cloud
cloud
cloud
cloud
cloud
cloud
mod rain
mod rain
light rain
light rain
light rain
light rain
cloud
part cloud
cloud
cloud
cloud
cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
—
—
—
—
—
—
—
6:31
—
—
—
—
—
—
—
6:31
—
—
—
—
—
—
—
6:33
—
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
—
—
—
—
4:23
—
—
—
—
—
—
—
4:22
—
—
—
—
—
—
—
4:22
—
—
—
—
4:22
 mm
—
—
—
—
—
—
10
9
4
2
1
1
—
—
—
—
—
—
—
—
—
—
—
—
—
—
Temp °C
10
10
11
12
11
10
8
7
6
6
5
5
6
6
5
5
5
4
5
7
7
6
4
3
3
3
Feels °C
9
8
8
8
5
3
1
-1
-2
-2
-3
-3
0
1
0
0
1
0
1
2
2
0
-2
-3
-3
-3
  • 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 

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