Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 1 pm 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
20.4° C
1.4° 

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 (12 Jul):

  • Morning surf: Morning surf (12 Jul, local time) - 0.5ft (0.2m), 8s period with E swell.
  • Afternoon surf: Afternoon surf (12 Jul, local time) - 0.5ft (0.2m), 7s period with E swell.
  • Evening surf: Evening surf (12 Jul, local time) - 0.5ft (0.2m), 7s period with E swell.

The current surf forecast for Nantasket Beach at 9PM is: 0.2m 7s primary swell from a East direction and 0.2m 3s secondary swell from a East-northeast direction (forecast issued at 01:00pm July 12). The wind direction is predicted to be cross-shore.

Time (EDT) & DateWave HeightWave Period
Morning (12 Jul)0.5ft (0.2m)8s
Afternoon (12 Jul)0.5ft (0.2m)7s
Evening (12 Jul)0.5ft (0.2m)7s

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


Short Range Forecast

Some drizzle, heaviest during Mon night. Warm (max 35°C on Tue afternoon, min 19°C on Mon night). Wind will be generally light.

Sun
12
Monday
13
Tuesday
14
Wed
15
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
2 AM
5 AM
8 AM
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)
0.2
E
7
0.2
E
7
0.2
E
7
0.2
E
7
0.1
E
10
0.2
E
7
0.1
E
10
0.1
E
10
0.1
E
10
0.2
E
9
0.2
E
9
0.6
S
4
0.2
E
9
0.1
E
10
0.1
E
9
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
SE
9
0.1
SE
9
Wave Graph
Metric surfscale
Energy kJ
4
4
4
4
2
4
2
2
2
7
7
12
7
2
2
2
2
2
2
2
2
2
3
3
Wind (km/h)
15
NE
15
E
15
SE
15
SSE
10
SSW
10
SW
10
SSW
15
SW
15
SSW
20
SSW
25
SSW
25
SSW
20
SW
25
SW
20
SW
20
WSW
15
SW
20
WSW
20
WSW
25
SW
20
SW
20
WSW
15
W
20
WNW
Wind State
cross-on
on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
off
cross-off
High Tide
9:48AM2.70m
10:00PM3.34m
10:46AM2.80m
10:58PM3.41m
11:42AM2.88m
11:54PM3.44m
Low Tide
3:42PM0.14m
4:33AM-0.26m
4:40PM0.06m
5:29AM-0.34m
5:37PM0.00m
6:24AM-0.38m
clear
clear
clear
clear
clear
clear
part cloud
clear
clear
cloud
part cloud
part cloud
light rain
part cloud
clear
part cloud
cloud
clear
cloud
clear
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:18
5:18
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:20
8:19
8:19
8:17
 mm
1
Temp °C
23
24
24
22
21
20
20
21
26
29
26
23
19
19
19
23
28
34
35
29
26
27
28
28
Feels °C
21
21
21
19
20
19
19
20
24
26
22
20
17
16
17
21
27
31
33
27
26
27
29
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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