Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Issued: 1 am 05 Jul 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
18.9° C

Slightly warmer than usual

Nantasket Beach surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Nantasket Beach surf forecast from 5 Jul 2026:

  • Best quality surf: Thursday 9 Jul, 2AM (local time) - 3ft (0.9m), 8s period, E swell with cross-offshore winds.
  • Most powerful swell: Tuesday 7 Jul, 8PM (local time) - 5.5ft (1.7m), 7s period, E swell with 270 kJ wave energy.
  • Next surfable swell (1★+): Thursday 9 Jul, 2AM (local time) - 3ft (0.9m), 8s period with E swell.

Best Forecast Surf Conditions for Nantasket Beach this week:

The surf forecast for Nantasket Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Jul 09) at 2AM. The primary swell is predicted to be 0.9m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Nantasket Beach in the next 16 days are 1.7m 7s and forecast to arrive on Tuesday (Jul 07) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Friday (Jul 10) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Thu 9th Jul)3ft (0.9m) 8s
Best Surf 2AM (Thu 9th Jul)3ft (0.9m) 8s
Most Powerful 8PM (Tue 7th Jul)5.5ft (1.7m) 7s

Table - best surf conditions forecast for Nantasket Beach over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Gather 'round, folks. Rusty here. Let's look at Nantasket Beach, and I gotta be straight with ya – this is one of those outlooks where you might wanna save your wax for another day. The whole 16-day window is a real struggle for surf. Every single record has a score of zero out of ten for surf quality, so we're not looking at any standout sessions. We've got a gap of no decent surf from the start until the very end of the period.

Alright, let's take it day by day. Starting off Sunday, the 5th of July, you've got a tiny 0.7 ft swell wrapping in from the ESE with a period of 10 seconds. Energy is almost nothing at 17 (weak). The wind is a cross-onshore from the ESE at 9 mph, making it choppy. It's poor. That continues into Monday the 6th – same story, a little more wind, still small and choppy.

Tuesday the 7th sees the swell jump up to 6 ft from the east, but with a period of just 6 seconds – that's short-period, crumbly windswell. The combined energy is 214 (moderate), but it's blown out by a strong onshore ENE wind at 16 mph. The wave comment says "poor surf conditions," so this one's a mess – more of a kite-surfing setup than a paddle session, with that wind and chop. Wednesday and Thursday have some cleaner windows, with the wind going cross-off or offshore, but the swell drops right back down to 4 ft or less. On Thursday the 9th, the wind from the SSW at 12 mph is cross-off, so the surface is clean, but there's almost no energy to work with.

Through the second week, from Friday the 10th onward, we see glassy conditions on a few mornings, like Saturday the 11th with NNW wind at 3 mph and glassy surface, and again on Saturday the 18th and Sunday the 19th. But the swell remains tiny, mostly 0.3 ft to 2 ft, with weak energy readings mostly in the single digits. There's one spike of energy on Tuesday the 7th at 262 (moderate), but the conditions were no good. For the rest of the period, the best you can say is it's clean – but flat. The water temp at Nantasket Beach is 66°F which is about average for this time of year.

Look, Nantasket Beach is consistent in its inconsistency here – it's a flat spell. But keep the board handy; forecasts can change, and it tends not to stay this poor for long. Not much to get excited about right now.

Rusty

Short Range Forecast

Heavy rain (total 46mm), heaviest during Mon night. Warm (max 25°C on Sun morning, min 16°C on Mon afternoon). Winds increasing (light winds from the ENE on Sun morning, fresh winds from the ENE by Tue morning).

Days 4-6 Weather Summary

Light rain (total 9mm), mostly falling on Fri afternoon. Warm (max 28°C on Fri afternoon, min 15°C on Wed night). Wind will be generally light.

Sunday
5
Monday
6
Tuesday
7
Wednesday
8
Thursday
9
Friday
10
Saturday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
1
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
Wave
Height (m)
Direction
Period (s)
0.2
ESE
10
0.1
E
10
0.2
ESE
9
0.2
E
10
0.2
E
10
1.1
ESE
6
1.7
E
6
1.7
E
7
1.5
E
7
1.2
E
7
1.1
E
8
0.9
E
8
0.8
E
8
0.8
E
8
0.6
E
8
0.5
E
8
0.4
E
8
0.3
E
7
0.6
NNE
5
0.4
NNE
5
0.2
ESE
10
Wave Graph
Metric surfscale
Energy kJ
9
3
8
7
8
71
214
262
220
156
135
92
78
82
46
29
18
9
20
9
10
Wind (km/h)
15
ESE
15
ESE
10
S
20
ESE
20
ESE
25
E
25
ENE
25
NE
20
NE
15
NE
10
ESE
10
SSW
10
S
20
SSW
20
SW
10
W
15
WNW
15
NNW
5
NNW
15
SE
15
SW
Wind State
cross-on
on
cross
cross-on
on
on
on
cross-on
cross-on
cross-on
cross-on
cross-off
cross
cross-off
cross-off
off
cross-off
cross-off
glassy
cross-on
cross-off
High Tide
3:50PM2.71m
4:01AM2.77m
4:33PM2.79m
4:51AM2.71m
5:21PM2.87m
5:45AM2.65m
6:11PM2.97m
6:42AM2.62m
7:04PM3.06m
7:42AM2.60m
8:01PM3.15m
8:45AM2.63m
9:01PM3.24m
Low Tide
9:32AM0.14m
9:52PM0.36m
10:15AM0.16m
10:42PM0.31m
11:01AM0.18m
11:36PM0.25m
11:51AM0.21m
00:33AM0.17m
12:44PM0.23m
1:31AM0.08m
1:41PM0.24m
2:33AM-0.03m
2:41PM0.21m
3:35AM-0.15m
part cloud
part cloud
cloud
light rain
mod rain
heavy rain
light rain
light rain
cloud
cloud
part cloud
clear
clear
part cloud
rain showers
clear
thunderstorm
rain showers
clear
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:11
5:13
5:13
5:13
5:15
5:16
5:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:22
8:22
8:22
8:22
8:21
8:21
8:20
 mm
1
8
32
4
1
3
5
1
Temp °C
25
25
22
17
17
16
17
16
16
17
18
17
21
26
23
27
28
23
22
24
22
Feels °C
24
22
20
15
15
13
13
13
13
15
17
17
21
24
22
28
29
24
20
22
18
Swell 1
Height (m)
Direction
Period (s)
0.2
ESE
10
0.2
ESE
3
0.2
E
10
0.2
E
10
0.1
E
10
1.2
E
7
1.1
E
8
0.9
E
8
0.8
E
8
0.8
E
8
0.6
E
8
0.5
E
8
0.4
E
8
0.3
E
7
0.2
E
7
0.4
NNE
5
0.2
NNE
4
Energy kJ
9
1
7
8
2
156
135
92
78
82
46
29
18
9
4
9
2
Swell 2
Height (m)
Direction
Period (s)
0.2
ESE
8
0.1
SE
8
0.2
ESE
9
0.1
SE
4
0.2
SSE
5
0.1
E
9
0.1
E
10
0.2
E
7
0.2
ESE
10
Energy kJ
7
3
8
1
3
2
2
4
10
Swell 3
Height (m)
Direction
Period (s)
0.1
E
10
0.1
S
5
0.2
ESE
9
0.1
SE
10
0.1
E
6
Energy kJ
2
1
8
4
1
Wind waves
Height (m)
Direction
Period (s)
0.2
ENE
3
0.2
ESE
2
0.4
SE
3
0.4
SE
4
0.4
ESE
4
1.1
ESE
6
1.7
E
6
1.7
E
7
1.5
E
7
0.8
SSE
4
0.3
SW
2
0.3
W
2
0.5
N
4
0.6
NNE
5
Energy kJ
1
1
2
4
7
71
214
262
220
15
1
1
6
20
Nearest Offshore or Glassy
Rating
(10 max)
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
1
Distance (km)
2684
534
383
295
276
90
470
301
32
32
32
0
26
471
26
58
93
91
113
131
113
Best forecast wave conditions in Massachusetts
Rating
(10 max)
1
1
1
1
1
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
2
1
1
3
2
1
3
2
2
4
3
2
2
3
1
2
2
1
2
2
1
Header Global
Rating
(10 max)
9
7
5
6
8
7
5
5
9
8
9
9
5
6
6
5
8
7
4
9
9
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Information about the Nantasket Beach Surf forecast

The above surf forecast table for Nantasket Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Nantasket Beach can be found by selecting the local surf guide option on the grey menu. Our Nantasket Beach surf forecast is unique since it includes wave energy (power) that defines the real feel of the surf rather than just the height or the period. If you surf the same spot (Nantasket Beach) regularly then make a mental note of the wave energy from the surf forecast table each time you go. Very soon you may start to choose your surf days based on the wave energy alone combined with our forecast of favourable offshore wind conditions. Our star ratings will help here and of course you will also find the usual wave height and period predictions on our surf forecasts as well as a full break down of the swell components under our advanced users option (to reveal that, click the little Einstein character under the tide times).

Further information to help with frequently asked questions about our surf forecast for Nantasket Beach may be found under the help tab on the top menu and also by moving your mouse over the question marks on the surf forecast table itself. Please always bear in mind that the forecast is for near-shore open water and local factors at each surf break influence the actual breaking wave height, such as the beach / reef profile, water depths offshore and shelter.

Nantasket Beach is 8 km (5 miles) from the city of Hingham. If you plan a vacation in Massachusetts, look for hotels and other accommodation in Hingham. Hingham has rooms for a wide range of budgets as well as car hire and transport links.

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