Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach 48 hour detailed Surf Forecast

Issued: 1 pm 07 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
20.0° C
1.7° 

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 (07 Jul):

  • Morning surf: Morning surf (07 Jul, local time) - 2.5ft (0.7m), 4s period with ESE swell.
  • Afternoon surf: Afternoon surf (07 Jul, local time) - 3.5ft (1.1m), 6s period with E swell.
  • Evening surf: Evening surf (07 Jul, local time) - 5ft (1.6m), 6s period with E swell.

The current surf forecast for Nantasket Beach at 5PM is: 1.3m 6s primary swell from a East direction (forecast issued at 01:00pm July 07). The wind direction is predicted to be cross-onshore.

Time (EDT) & DateWave HeightWave Period
Morning (07 Jul)2.5ft (0.7m)4s
Afternoon (07 Jul)3.5ft (1.1m)6s
Evening (07 Jul)5ft (1.6m)6s

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


Short Range Forecast

Moderate rain (total 12mm), heaviest on Tue afternoon. Warm (max 32°C on Thu afternoon, min 16°C on Tue night). Wind will be generally light.

Tue
7
Wednesday
8
Thursday
9
Fri
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
2 AM
5 AM
8 AM
Rating
(10 max)
0
0
0
0
0
0
2
0
1
0
0
0
0
0
1
1
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)
0.8
ESE
5
1
E
6
1.3
E
6
1.6
E
6
1.6
E
7
1.5
E
7
1.7
ENE
8
1.3
E
8
1.2
E
8
1.1
E
8
1.1
E
8
1.1
E
8
1
E
8
0.9
E
8
0.8
E
8
0.8
E
8
0.7
E
8
0.7
E
8
0.7
E
8
0.6
E
8
0.5
E
8
0.5
E
8
0.4
E
8
0.4
E
8
Wave Graph
Metric surfscale
Energy kJ
33
64
115
193
219
210
336
196
172
144
148
152
125
100
76
74
57
55
57
41
28
28
18
18
Wind (km/h)
20
ENE
25
NE
25
ENE
25
ENE
20
NE
15
NNE
15
N
10
N
5
NE
5
ESE
15
SE
15
SSE
15
SSW
15
SW
15
WSW
15
WSW
15
WSW
15
SW
20
SSW
20
WSW
20
SW
15
SW
15
SW
15
W
Wind State
on
cross-on
cross-on
cross-on
cross-on
cross-on
cross
cross
glassy
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
off
High Tide
5:21PM2.87m
5:45AM2.65m
6:11PM2.97m
6:42AM2.62m
7:04PM3.06m
7:42AM2.60m
Low Tide
11:01AM0.18m
11:36PM0.25m
11:51AM0.21m
00:33AM0.17m
12:44PM0.23m
1:31AM0.08m
light rain
light rain
light rain
rain showers
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
cloud
cloud
rain showers
part cloud
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:13
5:15
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:22
8:22
8:21
8:21
 mm
4
1
5
4
2
Temp °C
18
18
17
17
18
17
16
17
20
23
24
22
20
20
20
23
28
32
31
26
22
21
21
24
Feels °C
16
15
14
14
16
16
15
17
21
23
23
21
19
19
20
23
28
31
30
26
22
22
22
25
  • 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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