Nantasket Beach surf break

Nantasket Beach surfForecast / Massachusetts / USA

information circle48hr Weather and Surf, issued 7 am Saturday 16 May 2026 EDT
Forecast update in hr  min  s Forecast update imminent
Nantasket Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Nantasket Beach sea temperature is
10.8° C
(Which is 1.2°C warmer than normal for this time of year)

How big are the waves at Nantasket Beach today?

The current surf forecast for Nantasket Beach at 2PM is: 0.8m 9s primary swell from a East direction (forecast issued at 07:00am May 16). An open ocean swell of 0.3m 2s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (EDT) & DateWave HeightWave Period
Morning (16 May)3ft (0.9m)9s
Afternoon (16 May)2.5ft (0.8m)9s
Evening (16 May)2ft (0.6m)9s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Some drizzle, heaviest during Sat night. Warm (max 27°C on Sun afternoon, min 13°C on Sat morning). Wind will be generally light.

Saturday
16
Sunday
17
Monday
18
Tue
19
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
5 PM
8 PM
11 PM
2 AM
Rating
(10 max)
2
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 MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Height MapHeight MapHeight Map
Wave
Height (m)
Direction
Period (s)
1.1
E
10
1
E
9
0.9
E
9
0.8
E
9
0.7
E
9
0.6
E
9
0.6
E
9
0.5
E
9
0.5
E
8
0.4
ESE
8
0.4
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.1
E
18
0.2
ESE
8
0.2
ESE
8
0.2
ESE
9
0.2
ESE
9
Wave Graph
Metric surfscale
Energy kJ
216
171
136
104
78
56
55
36
36
23
22
13
13
12
6
6
6
6
6
6
6
6
8
8
Wind (km/h)
10
SW
15
WSW
15
SW
15
WSW
20
SW
25
SSW
25
SSW
25
SW
20
WSW
15
W
15
WNW
20
WNW
20
WNW
10
WNW
10
NNE
10
ENE
10
ESE
10
E
15
ESE
15
SE
20
SSE
15
SSE
15
SSW
15
SW
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
off
off
cross-on
on
on
on
cross-on
cross-on
cross
cross
cross-off
cross-off
High Tide
11:22AM3.00m
11:33PM3.47m
12:14PM3.02m
00:24AM3.51m
1:08PM3.00m
1:17AM3.48m
Low Tide
5:09AM-0.35m
5:19PM-0.03m
6:00AM-0.45m
6:10PM-0.04m
6:53AM-0.47m
7:03PM-0.02m
clear
clear
clear
clear
clear
clear
part cloud
cloud
rain showers
clear
clear
clear
clear
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:20
5:20
5:18
5:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:58
7:59
8:00
8:00
1
Temp °C
11
13
19
23
25
19
16
17
16
18
24
27
27
26
20
16
15
14
16
19
20
17
15
16
8
10
15
19
21
14
11
12
14
16
20
22
23
24
18
14
13
11
12
15
16
14
13
15
Swell 1
Height (m)
Direction
Period (s)
1.1
E
10
1
E
9
0.9
E
9
0.8
E
9
0.7
E
9
0.6
E
9
0.6
E
9
0.5
E
9
0.5
E
8
0.4
ESE
8
0.4
ESE
8
0.3
ESE
8
0.3
ESE
8
0.3
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
ESE
8
0.2
NNE
3
0.2
ESE
8
0.4
SE
3
0.2
ESE
3
Energy kJ
216
171
136
104
78
56
55
36
36
23
22
13
13
12
6
6
6
6
6
6
1
6
3
1
Swell 2
Height (m)
Direction
Period (s)
0.2
SSE
4
0.3
E
8
0.3
E
8
0.2
E
8
0.2
E
8
0.2
SSE
4
0.1
SE
5
0.1
SE
5
0.2
NNE
3
0.2
ESE
8
0.2
ESE
9
0.2
ESE
9
Energy kJ
2
12
12
6
5
2
1
1
1
6
8
8
Swell 3
Height (m)
Direction
Period (s)
0.2
S
4
0.1
E
18
0.1
E
13
Energy kJ
1
6
4
Wind waves
Height (m)
Direction
Period (s)
0.3
WSW
2
0.3
SSW
2
0.5
S
5
0.5
S
3
0.4
SW
3
0.4
SW
3
0.2
WSW
2
0.3
NE
3
0.4
NE
3
0.4
ENE
3
0.4
ENE
4
0.4
ENE
4
0.3
ESE
3
0.4
SE
3
0.5
SE
3
Energy kJ
1
1
11
4
3
2
1
1
3
5
4
4
2
3
6
Nearest Offshore or Glassy
Rating
(10 max)
2
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
0
7
26
18
26
961
1230
58
55
55
31
67
67
100
93
93
91
108
276
523
523
523
58
160
Best forecast wave conditions in Massachusetts
Rating
(10 max)
2
2
2
1
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
4
3
4
2
4
3
3
4
4
2
4
1
3
4
4
5
3
4
4
3
2
1
2
3
Header Global
Rating
(10 max)
5
5
5
6
5
4
4
4
6
9
9
7
4
4
5
7
5
4
5
5
4
4
4
4
  • 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

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