Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 7 pm 13 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
20.6° C
1.5° 

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 (14 Jul):

  • Morning surf: Morning surf (14 Jul, local time) - 0.5ft (0.1m), 10s period with E swell.
  • Afternoon surf: Afternoon surf (14 Jul, local time) - 0.5ft (0.1m), 9s period with E swell.
  • Evening surf: Evening surf (14 Jul, local time) - 0.5ft (0.1m), 9s period with E swell.

The current surf forecast for Nantasket Beach at 3AM is: 0.1m 9s primary swell from a East direction and 0.1m 4s secondary swell from a Southeast direction (forecast issued at 07:00pm July 13). An open ocean swell of 0.4m 3s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (14 Jul)0.5ft (0.1m)10s
Afternoon (14 Jul)0.5ft (0.1m)9s
Evening (14 Jul)0.5ft (0.1m)9s

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


Short Range Forecast

Some drizzle, heaviest during Wed morning. Warm (max 35°C on Tue afternoon, min 20°C on Mon night). Wind will be generally light.

Mon
13
Tuesday
14
Wednesday
15
Thu
16
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
2 AM
5 AM
8 AM
11 AM
2 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
0
0
0
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)
0.5
S
4
0.5
S
4
0.2
E
9
0.1
E
9
0.1
E
9
0.1
E
10
0.1
E
10
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
16
0.1
E
9
0.1
E
16
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
15
0.1
E
15
Wave Graph
Metric surfscale
Energy kJ
7
9
7
2
2
2
2
2
2
2
2
2
2
2
2
2
5
2
5
2
2
2
4
4
Wind (km/h)
25
SSW
25
SSW
25
SW
25
SW
20
SW
20
SW
20
WSW
20
WSW
25
W
20
SW
15
WSW
20
WSW
20
WSW
20
NW
10
NW
10
NW
0
SW
5
NW
5
NNW
10
W
15
WNW
15
NW
10
NNW
5
WNW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
off
cross-off
cross-off
off
off
cross-off
cross-off
cross-off
glassy
glassy
cross-off
off
off
cross-off
cross-off
off
High Tide
10:58PM3.41m
11:42AM2.88m
11:54PM3.44m
12:38PM2.95m
00:50AM3.41m
1:32PM3.01m
Low Tide
4:40PM0.06m
5:29AM-0.34m
5:37PM0.00m
6:24AM-0.38m
6:33PM-0.04m
7:17AM-0.37m
clear
part cloud
clear
clear
clear
cloud
part cloud
clear
clear
clear
clear
clear
part cloud
thunderstorm
cloud
cloud
part cloud
part cloud
cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:18
5:18
5:20
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:19
8:19
8:17
8:16
 mm
1
Temp °C
27
23
21
20
21
23
30
32
35
33
28
28
27
25
28
32
31
29
27
25
23
25
28
30
Feels °C
24
20
18
17
19
21
28
30
33
33
28
28
27
25
29
31
32
30
27
24
21
22
26
28
  • 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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