Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach Surf Forecast and Surf Report

Issued: 1 am 23 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
20.4°C
0.3° 

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 23 Aug 2026:

  • Most powerful swell: Wednesday 26 Aug, 8PM (local time) - 1.5ft (0.4m), 10s period, ESE swell with 31 kJ wave energy.

Best Forecast Surf Conditions for Nantasket Beach this week:

The most powerful waves expected at Nantasket Beach in the next 16 days are 0.4m 10s and forecast to arrive on Wednesday (Aug 26) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Tuesday (Aug 25) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Wed 26th Aug)1.5ft (0.4m) 10s

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


The Lowdown

Alright, Rusty here. Let’s take a look at what’s coming down the line for Nantasket Beach.

Honestly, for the next week and a half, there’s not much to get excited about. The pattern is pretty flat and the wind is often in the wrong spot. We’ve got a long, quiet period ahead.

Starting Sunday the 23rd, it’s pretty much a no-go. We’re looking at weak, short-period swell at 2 ft from the ENE, but with onshore winds and combined energy way down at 45. That’s not worth paddling out for. Monday and Tuesday stay small and weak too, with a bit of clean surf on offer but hardly any push behind it.

The real dry spell runs from Sunday the 23rd all the way through to Monday the 31st of August. That’s over a week of barely any surfable energy. There is a little spike of interest on Monday afternoon the 31st when a long period groundswell of 16 to 18 seconds pushes through, but it’s tiny – just 1 ft. The wind goes glassy that afternoon, which is beautiful, but there’s simply not enough wave to ride. Combined energy edges up to 57, but it’s still weak.

We finally see a pulse of something on Tuesday the 1st of September. The afternoon brings a jump in swell height to 5 ft from the NNE, with combined energy at a moderate 175. That sounds promising, but the period is a short 6 seconds and the onshore wind is messy. It’s not going to be pretty.

The best of a bad run looks like Wednesday the 2nd of September. The morning has 5 ft from the NE with combined energy at 207 – that’s a moderate amount of water moving. The period is still short (7 seconds), but by afternoon the wind swings cross-off from the SSW with a gentle breeze, cleaning things up. You’ll get surfable, ordinary conditions. Nothing to write home about, but it’s the only window where you might get a few crumbly ones to yourself. This is a beach break, and with the swell being short-period and straight from the northeast, it’ll lack that punch you’d want.

From the 3rd through the 7th, it’s back to poor conditions with onshore winds and dropping energy. Thursday the 3rd has moderate cross-onshore winds over 4 ft of swell, which is a write-off. Friday the 4th might offer a tiny bit of hope with cleaner conditions, but the swell is dropping and the wind is light cross-onshore.

So, if you’re desperate, keep an eye on Wednesday the 2nd of September. That’s your only real chance for a paddle. The crowds are possible there, but given how weak this outlook is, it’ll be quiet.

Stay patient. Forecasts change.

- Rusty

Short Range Forecast

Some drizzle, heaviest during Sun night. Warm (max 28°C on Mon afternoon, min 17°C on Tue night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Fri afternoon. Warm (max 28°C on Thu afternoon, min 18°C on Wed morning). Wind will be generally light.

Sunday
23
Monday
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
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
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
Wave
Height (m)
Direction
Period (s)
0.6
ENE
5
0.5
E
5
0.5
E
6
0.4
SE
7
0.4
ESE
6
0.2
E
11
0.2
E
11
0.2
E
11
0.2
E
11
0.4
ESE
8
0.4
ESE
8
0.4
ESE
9
0.4
ESE
8
0.3
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
Wave Graph
Metric surfscale
Energy kJ
22
14
19
12
13
9
9
9
9
22
19
25
20
12
14
13
13
6
6
6
7
Wind (km/h)
10
E
10
ESE
10
WSW
20
SW
20
SW
10
WSW
10
WSW
10
WSW
10
W
10
W
10
SSW
10
WSW
10
SSW
20
S
10
SSW
15
ESE
10
E
10
W
15
NW
15
NW
5
NW
Wind State
on
on
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross
cross-off
cross-on
on
off
cross-off
cross-off
cross-off
High Tide
8:40AM2.27m
8:46PM2.66m
9:34AM2.33m
9:38PM2.73m
10:18AM2.43m
10:23PM2.82m
10:58AM2.54m
11:04PM2.90m
11:35AM2.65m
11:43PM2.96m
12:11PM2.76m
00:22AM3.00m
12:48PM2.87m
1:02AM3.00m
Low Tide
2:28PM0.67m
3:22AM0.40m
3:21PM0.60m
4:08AM0.32m
4:08PM0.50m
4:47AM0.23m
4:49PM0.39m
5:23AM0.14m
5:30PM0.28m
5:59AM0.07m
6:10PM0.18m
6:35AM0.02m
6:50PM0.09m
part cloud
part cloud
thunderstorm
clear
clear
clear
part cloud
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
cloud
thunderstorm
thunderstorm
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
5:58
6:00
6:01
6:01
6:03
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:32
7:30
7:29
7:28
7:25
7:23
7:22
 mm
1
1
1
Temp °C
21
22
22
26
28
24
23
25
23
23
27
26
25
28
24
23
24
23
21
26
23
Feels °C
22
24
24
23
24
21
21
23
22
21
25
25
25
27
23
23
24
26
18
22
21
  • 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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