Diamond Beach Surf Break

Lat Long: 38.96° N 74.85° W

Diamond Beach Surf Forecast and Surf Report

Issued: 1 am 09 Sep 2026 (local time)

Forecast update in  hr  min

Today's Diamond Beach sea temperature is
25.0°C
3.0° 

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 9 Sep 2026:

  • Most powerful swell: Thursday 10 Sep, 2AM (local time) - 4.5ft (1.3m), 5s period, SSW swell with 91 kJ wave energy.

Best Forecast Surf Conditions for Diamond Beach this week:

The most powerful waves expected at Diamond Beach in the next 16 days are 1.3m 5s and forecast to arrive on Thursday (Sep 10) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 4s period and expected on Thursday (Sep 10) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Thu 10th Sep)4.5ft (1.3m) 5s

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


The Lowdown

Alright, grab your board. It’s been flat as a pancake out here, and I’m not gonna lie, it’s been a rough stretch. But let’s look at the whole picture, because there’s a light at the end of the tunnel, even if it’s a long way off.

We’re looking at a pretty grim start. From Wednesday the 9th all the way through to the 23rd, there’s just nothing on the table. That’s a solid two-week gap of blown-out, dribbly, or just plain non-existent surf. We’re talking poor conditions with tiny, short-period swell and onshore winds messing up what little is there. Wednesday the 9th has some 2ft windslop but it’s cross and choppy (17), so not worth the paddle. The rest of that first week is just tiny leftovers, under 2ft, and while some mornings have clean light winds, there’s just no energy in the water. Thursday the 10th and Friday the 11th do get some clean windows, but the swell is basically nothing, so you’d be fighting for ankle-biters on a board that’s too big. The weekend of the 13th and 14th sees a bit of a bump to 3-4ft but it’s riddled with onshores and the threat of thunderstorms, so it’s a mess. That whole period is a write-off.

But hold on. I see something stirring out there. It’s a long way off, but the models are starting to hint at some real change. We’ve got to be patient, but it looks like our patience might finally pay off.

The first real glimmer of hope arrives on the morning of Tuesday the 24th of September. Diamond Beach (Diamond-Beach-1) is where it’s at. We’re looking at a new pulse of swell pushing 5ft from the ESE, and the wind is set to go light offshore from the WNW. That’s a game-changer. This is the standout of the whole period, by far. The energy jumps to a moderate 343, and it’s coming with clean, light winds. The swell direction is from the ESE, which is a bit different from the SE optimum the spot likes, but with that clean window and the size, it’s going to be the best we’ve seen. This is the one to circle on the calendar. It won’t be perfect, but it’ll be real surf. This is a dawn patrol mission, get in before the afternoon sea breeze ruins it.

Now, this is a long-range call, so don’t book the time off work just yet. Forecasts will change. But as it stands, that’s our window. The rest of the second week is a gamble, with some weak pulses and iffy winds. Trust me, I’ve been staring at the charts for too long. When it’s this flat for this long, a change is coming. And when it does, that Tuesday morning is the one we’ll be talking about.

Rusty out.

Short Range Forecast

Moderate rain (total 13mm), heaviest on Thu night. Warm (max 28°C on Thu afternoon, min 21°C on Thu night). Winds decreasing (fresh winds from the SSW on Wed night, light winds from the NW by Fri afternoon).

Days 4-6 Weather Summary

Light rain (total 8mm), mostly falling on Sun morning. Warm (max 26°C on Mon afternoon, min 20°C on Sat morning). Wind will be generally light.

Wednesday
9
Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
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
SSW
4
1.1
S
4
1.3
SSW
5
0.7
S
6
0.5
S
6
0.5
S
6
0.4
SSE
6
0.2
ESE
9
0.3
SE
9
0.2
SSE
7
0.2
ESE
9
0.9
SSE
4
1
SSE
5
1.2
SSE
5
0.6
SE
5
0.3
SE
9
0.4
SE
9
0.3
SE
9
0.4
SE
8
0.4
SE
8
0.6
S
4
Wave Graph
Metric surfscale
Energy kJ
8
48
91
30
16
19
13
7
12
4
8
34
48
78
20
13
20
12
17
15
10
Wind (km/h)
20
SSW
35
S
35
SSW
20
WSW
15
NW
15
N
20
NNE
5
NW
10
NNE
10
ESE
15
SE
20
SE
25
SE
15
SSE
5
SSE
5
ENE
10
SE
10
S
10
S
15
S
15
SSW
Wind State
cross
cross-on
cross
cross-off
off
cross-off
cross-off
off
cross-off
cross-on
on
on
on
on
on
cross-on
on
cross-on
cross-on
cross-on
cross-on
High Tide
7:47PM1.69m
8:19AM1.60m
8:34PM1.70m
9:05AM1.66m
9:19PM1.66m
9:48AM1.68m
10:02PM1.59m
10:31AM1.66m
10:45PM1.49m
11:15AM1.60m
11:30PM1.39m
11:59AM1.53m
00:18AM1.28m
Low Tide
1:14PM-0.01m
1:54AM-0.11m
2:06PM-0.06m
2:39AM-0.14m
2:56PM-0.07m
3:22AM-0.13m
3:42PM-0.05m
4:02AM-0.08m
4:26PM-0.01m
4:39AM-0.01m
5:08PM0.07m
5:16AM0.09m
5:51PM0.16m
clear
clear
clear
part cloud
rain showers
mod rain
rain showers
part cloud
clear
clear
part cloud
cloud
rain showers
thunderstorm
clear
clear
clear
thunderstorm
clear
thunderstorm
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:33
6:35
6:35
6:37
6:37
6:39
6:39
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:16
7:15
7:14
7:13
7:10
7:09
7:07
 mm
1
10
2
3
2
3
3
Temp °C
24
25
24
26
28
24
22
23
23
22
23
23
23
24
25
25
26
26
26
27
27
Feels °C
23
22
20
25
28
26
19
22
22
21
21
21
23
25
28
29
29
29
29
29
29
  • 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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