Diamond Beach Surf Break

Lat Long: 38.96° N 74.85° W

Diamond Beach Surf Forecast and Surf Report

Issued: 7 am 03 Sep 2026 (local time)

Forecast update in  hr  min

Today's Diamond Beach sea temperature is
25.1°C
2.7° 

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


Diamond Beach surf forecast from 3 Sep 2026:

  • Best quality surf: Monday 7 Sep, 8AM (local time) - 2ft (0.6m), 10s period, E swell with cross-offshore winds.
  • Most powerful swell: Wednesday 9 Sep, 11PM (local time) - 4.5ft (1.4m), 5s period, S swell with 110 kJ wave energy.
  • Next surfable swell (1★+): Monday 7 Sep, 8AM (local time) - 2ft (0.6m), 10s period with E swell.

Best Forecast Surf Conditions for Diamond Beach this week:

The surf forecast for Diamond Beach over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 8AM. The primary swell is predicted to be 0.6m and 10s period with a secondary swell of 0.1m and 9s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Diamond Beach in the next 16 days are 1.4m 5s and forecast to arrive on Wednesday (Sep 09) at 11PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Sep 08) at 2AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Mon 7th Sep)2ft (0.6m) 10s
Best Surf 8AM (Mon 7th Sep)2ft (0.6m) 10s
Most Powerful11PM (Wed 9th Sep)4.5ft (1.4m) 5s

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


The Lowdown

Alright folks, Rusty here. Let’s be straight with you – this is a tough one to call. We’re looking at Diamond Beach over the next 16 days, and honestly, the surf window is barely cracked open. There’s a whole lot of nothing on offer for the first several days, with the first glimmer of something rideable not showing up until Monday the 7th. Even then, it’s not fireworks, it’s more like a damp match. The water is currently sitting at 77°, which is much warmer than normal for this time of year, so that’s one nice thing if you’re just going for a paddle.

Let’s run through it. Thursday the 3rd through Saturday the 5th is a complete write-off. Tiny, weak swell with a combined energy of 40 or less, and the wind is all over the place – cross-off, then cross-on, then offshore but the swell just isn’t there. We’re talking knee-high slop at best. You’d be better off taking a nap.

Sunday the 6th sees a slight bump in size, with a 4ft cross-shore wind swell from the ENE in the morning, and a combined energy of 58. But the wind is a fresh cross-shore, turning it into lumpy, choppy mess. Not for the faint of heart, and definitely not for beginners. The afternoon is similar, just a touch smaller.

Now, Monday the 7th is our one and only real standout. The morning brings a long-period groundswell at 2ft from the East, with a period of 11 seconds. That’s a proper pulse of energy, and combined with a light offshore wind from the NNW, the conditions are described as clean. The combined energy is 85. This is the best it’s going to get. It’s small, but that long period should give you some fun, shaped-up lines on the right bank. The only catch is that Diamond Beach is an exposed beach break, and a long period swell like this can sometimes run a bit straight, so you’ll need to find a wedgey bank. Still, it’s the only morning in the whole outlook that’s worth setting an alarm for. The afternoon on Monday turns ordinary, with a cross-shore wind ruining the glass.

From Tuesday the 8th onward, it’s back to the same story. Tiny, weak swell, combined energy rarely breaking 50. The wind is often cross-off or offshore, which keeps the surface clean, but there’s just no power in the water. We get a few afternoons with fresh offshore winds around the 11th and 12th, but again, the swell is pitiful – 2ft to 3ft with short periods. You’ll be bogged down on a foamie. The later part of the second week, from the 17th and 18th, shows some very long period groundswell (13 seconds) but it’s a ghost, only 0.3ft to 1ft. The combined energy hits 37, which is laughable. It’s a clean, glassy offshore picture, but there’s nothing to ride.

So, to sum it up: if you’re desperate, Monday morning the 7th is your only shot. The rest of the 16 days is a flat, windy, or just plain disappointing stretch. For an exposed beach break like Diamond Beach, a blank run like this is pretty normal – the area has a reputation for being inconsistent. Don’t hold your breath, but as always, forecasts can change. Hang loose.

Rusty.

Short Range Forecast

Moderate rain (total 16mm), heaviest on Fri night. Warm (max 31°C on Thu night, min 20°C on Sat night). Wind will be generally light.

Days 4-6 Weather Summary

Mostly dry. Warm (max 24°C on Tue afternoon, min 19°C on Sun morning). Wind will be generally light.

Thursday
3
Friday
4
Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
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
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
Wave
Height (m)
Direction
Period (s)
0.4
SE
9
0.4
SE
9
0.4
ESE
8
0.3
SE
8
0.4
SE
8
0.3
SE
8
0.3
SSE
6
0.3
S
6
0.2
ESE
8
1.1
ENE
5
1
E
6
0.7
E
7
0.6
E
11
0.5
E
10
0.4
E
10
0.3
E
10
0.3
E
10
0.7
SSW
4
0.6
SSW
4
1.2
S
5
1.3
SSW
6
Wave Graph
Metric surfscale
Energy kJ
29
27
27
11
17
10
8
7
6
54
62
46
81
51
31
17
16
12
11
68
106
Wind (km/h)
10
W
10
SSW
10
WSW
15
WNW
15
NNW
15
NW
15
NNW
25
NNW
15
NNE
30
NE
20
ENE
5
ESE
10
NNW
10
SW
15
WSW
10
WNW
10
SSW
20
SW
20
SSW
35
S
30
SSW
Wind State
cross-off
cross-on
cross-off
cross-off
off
off
cross-off
off
cross-off
cross
cross
cross-on
off
cross
cross-off
cross-off
cross-on
cross
cross-on
cross-on
cross
High Tide
1:27PM1.54m
2:05AM1.24m
2:29PM1.52m
3:11AM1.21m
3:36PM1.52m
4:21AM1.23m
4:46PM1.54m
5:31AM1.29m
5:54PM1.58m
6:35AM1.40m
6:54PM1.65m
7:30AM1.51m
7:47PM1.69m
Low Tide
7:46PM0.24m
7:37AM0.20m
9:04PM0.25m
8:57AM0.23m
10:17PM0.20m
10:14AM0.20m
11:20PM0.12m
11:20AM0.13m
00:15AM0.03m
12:19PM0.05m
1:06AM-0.05m
1:14PM-0.01m
1:54AM-0.11m
thunderstorm
thunderstorm
rain showers
clear
clear
thunderstorm
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
cloud
light rain
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:28
6:30
6:31
6:31
6:33
6:33
6:33
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:27
7:24
7:23
7:22
7:21
7:19
7:16
 mm
1
1
4
10
2
Temp °C
25
29
31
26
30
29
24
26
25
21
21
21
21
23
23
22
24
23
23
24
24
Feels °C
27
33
32
28
30
32
23
24
22
17
18
20
20
21
21
22
24
21
21
20
20
  • 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 Diamond Beach Surf forecast

The above surf forecast table for Diamond Beach provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Diamond Beach can be found by selecting the local surf guide option on the grey menu. Our Diamond 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 (Diamond 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 Diamond 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.

Diamond Beach is 43 km (27 miles) from Ocean City. If you plan a vacation in New Jersey, look for hotels and other accommodation in Ocean City. Ocean City has rooms for a wide range of budgets as well as car hire and transport links.

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