Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 1 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
19.4° 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 (08 Aug):

  • Morning surf: Morning surf (08 Aug, local time) - 0.5ft (0.1m), 8s period with SE swell.
  • Afternoon surf: Afternoon surf (08 Aug, local time) - 0.5ft (0.1m), 8s period with SE swell.
  • Evening surf: Evening surf (08 Aug, local time) - 0.5ft (0.1m), 9s period with E swell.

The current surf forecast for Nantasket Beach at 8PM is: 0.1m 8s primary swell from a Southeast direction and 0.1m 9s secondary swell from a East direction (forecast issued at 01:00pm August 08). The wind direction is predicted to be offshore.

Time (EDT) & DateWave HeightWave Period
Morning (08 Aug)0.5ft (0.1m)8s
Afternoon (08 Aug)0.5ft (0.1m)8s
Evening (08 Aug)0.5ft (0.1m)9s

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


Short Range Forecast

Light rain (total 3mm), mostly falling on Sat night. Warm (max 33°C on Sat afternoon, min 22°C on Sat night). Wind will be generally light.

Sat
8
Sunday
9
Monday
10
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)
0.1
E
8
0.1
E
8
0.1
E
9
0.1
E
9
0.1
E
8
0.1
E
8
0.1
E
8
0.1
E
8
0.1
E
9
0.1
E
8
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
10
0.4
SSE
3
0.1
E
8
0.1
E
10
Wave Graph
Metric surfscale
Energy kJ
2
2
2
2
1
1
1
2
2
2
2
2
2
2
2
2
2
2
3
1
2
Wind (km/h)
10
WSW
5
SW
10
N
15
W
10
SW
10
WSW
10
WSW
15
W
15
W
15
W
15
WNW
15
WNW
10
WNW
10
NW
5
N
0
ENE
10
SE
5
SSE
10
SW
15
SSW
15
SW
Wind State
off
cross-off
cross
off
cross-off
off
off
off
off
off
cross-off
cross-off
cross-off
cross-off
glassy
glassy
cross-on
cross-on
cross-off
cross-off
cross-off
High Tide
7:41PM3.08m
8:30AM2.55m
8:47PM3.14m
9:35AM2.65m
9:50PM3.23m
Low Tide
1:20PM0.30m
2:17AM0.03m
2:25PM0.27m
3:21AM-0.05m
3:30PM0.19m
clear
part cloud
cloud
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
cloud
part cloud
part cloud
clear
rain showers
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:53
7:52
7:52
 mm
1
1
1
Temp °C
29
33
31
25
22
23
23
25
30
33
33
30
26
24
23
23
27
30
31
26
22
Feels °C
30
34
32
26
23
24
24
26
29
31
30
28
25
23
23
24
27
30
30
26
23
  • 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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