Nantasket Beach Surf Break

Lat Long: 42.31° N 70.88° W

Nantasket Beach Surf Forecast and Surf Report

Issued: 7 pm 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Nantasket Beach sea temperature is
19.0° C
1.5° 

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 Aug 2026:

  • Most powerful swell: Thursday 6 Aug, 8PM (local time) - 1.5ft (0.4m), 4s period, SSE swell with 6 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 4s and forecast to arrive on Thursday (Aug 06) 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 4s period and expected on Thursday (Aug 06) at 11PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 8PM (Thu 6th Aug)1.5ft (0.4m) 4s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s coming up for Nantasket Beach.

Honestly, I’ve gotta level with you – the next couple of weeks are looking pretty flat. We’re staring down a long stretch of minimal swell, with the first real signs of life not showing up until the tail end of the window. It’s going to be a test of patience.

Right through the first week of August, from the 5th to the 12th, we’re talking about ankle-snappers at best. Swell heights are barely registering at 0.3ft to 1ft, and when the period is as short as 3 to 8 seconds, there’s just no push behind it. The combined energy is in the doldrums, reading between 3 and 9 – that’s the definition of weak. The wind though, that’s a real tease. We get some nice clean conditions, especially a glassy morning on Sunday the 9th with a light offshore from the NW, and then again on Wednesday the 12th afternoon with a perfect glass-off. But without any swell to work with, it’s just a flat, pretty lake. No point even paddling out.

We finally see a pulse of energy around Monday the 17th, as the swell bumps up to 1ft from the E, with a short period of 5-6 seconds. The combined energy creeps up to around 15. Still small, but it’s not nothing. Conditions are cross-onshore though, so it’ll be a bit bumpy.

The best bet in this whole 16-day window looks like Wednesday the 19th and Thursday the 20th. On Wednesday morning, we’ve got a 3ft swell from the E with an 8-second period, and the combined energy hits 78 – that’s moderate, getting some juice. The wind is cross-off from the SW, and the wave comment says clean. That’s our standout. By Wednesday afternoon, the swell builds to 3ft from the ESE, energy jumps to 112, but the wind picks up to 12 mph. It’s still clean, but a bit more breeze on it. Thursday morning sees the swell drop back to 2ft, energy back to 48, but again with clean cross-off winds. For a beach break, this is a workable little window. The wave state is clean, and with the swell direction being E/ESE, it’s doing what it can for the exposed stretch. It’s not going to be pumping, but it’s the only real surf on offer. Crowds are possible here, Nantasket is a popular spot, but with the size being what it is, it’ll likely just be a few diehards.

Keep in mind, the water temperature anomaly is about average for this time of year, so no surprises there.

So, bottom line: don’t bother for the first 12 days unless you want to practice your tanning. The window of the 18th through the 20th is the only shot, with Wednesday the 19th morning being the pick of the bunch. It’s a long-range call, so not set in stone, but it’s all we’ve got.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Thu night. Warm (max 33°C on Thu afternoon, min 22°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Fri night. Warm (max 35°C on Mon afternoon, min 21°C on Fri night). Wind will be generally light.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
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
Swell
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
10
0.1
E
10
0.4
SSE
3
0.1
E
9
0.1
E
9
0.1
E
9
0.1
E
10
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
8
0.1
SE
9
0.1
SE
10
0.1
E
10
Wave Graph
Metric surfscale
Energy kJ
2
2
4
2
3
2
2
2
2
3
2
2
1
2
2
1
3
4
2
Wind (km/h)
10
WSW
10
WSW
10
SW
15
SW
10
SW
15
SW
15
SW
10
W
10
SE
10
SW
10
WSW
10
NNE
5
WSW
5
NW
5
ESE
15
SW
10
SW
20
W
15
WSW
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-on
cross-off
cross-off
cross-on
cross-off
glassy
cross-on
cross-off
cross-off
off
off
High Tide
4:24AM2.71m
4:48PM2.99m
5:20AM2.62m
5:41PM3.02m
6:20AM2.55m
6:40PM3.05m
7:23AM2.52m
7:41PM3.08m
8:30AM2.55m
8:47PM3.14m
9:35AM2.65m
9:50PM3.23m
Low Tide
10:15PM0.13m
10:29AM0.17m
11:10PM0.12m
11:22AM0.23m
00:09AM0.11m
12:20PM0.28m
1:11AM0.09m
1:20PM0.30m
2:17AM0.03m
2:25PM0.27m
3:21AM-0.05m
3:30PM0.19m
4:21AM-0.16m
clear
part cloud
part cloud
clear
clear
part cloud
thunderstorm
clear
part cloud
rain showers
clear
part cloud
rain showers
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:39
5:39
5:41
5:41
5:43
5:45
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:59
7:58
7:57
7:55
7:53
7:52
7:52
 mm
2
1
2
Temp °C
24
27
32
28
30
33
29
31
33
29
29
31
23
29
32
30
32
35
31
Feels °C
22
27
30
27
32
34
31
32
35
32
30
33
26
30
34
31
32
34
33
  • Map Icons:
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  • 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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