Diamond Beach Surf Break

Lat Long: 38.96° N 74.85° W

Diamond Beach Surf Forecast and Surf Report

Issued: 7 pm 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 10 Sep 2026:

  • Best quality surf: Thursday 10 Sep, 5PM (local time) - 3.5ft (1.0m), 6s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Thursday 10 Sep, 5AM (local time) - 4.5ft (1.4m), 5s period, SSW swell with 117 kJ wave energy.
  • Next surfable swell (1★+): Thursday 10 Sep, 5PM (local time) - 3.5ft (1.0m), 6s period with SSW 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 Thursday (Sep 10) at 5PM. The primary swell is predicted to be 1.0m and 6s period with a secondary swell of 0.5m and 6s. Another secondary swell of 0.2m and 9s is also forecast. 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 Thursday (Sep 10) at 5AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 4s period and expected on Thursday (Sep 10) at 11AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 5PM (Thu 10th Sep)3.5ft (1.0m) 6s
Best Surf 5PM (Thu 10th Sep)3.5ft (1.0m) 6s
Most Powerful 5AM (Thu 10th Sep)4.5ft (1.4m) 5s

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


The Lowdown

Alright, surfers. Rusty here. Let’s get into it.

Right off the bat, I gotta be straight with you: we’ve got a pretty grim outlook for the next couple of weeks at Diamond Beach. There’s no real standout session in this whole 16-day window. The swell is small, the wind is messy, and the scores across the board are flat. It’s going to be a tough run for anyone looking for a proper wave.

The forecast kicks off Thursday the 10th with weak, short-period S swell at 2ft and a 6-second period. The wind is a cross-off from the W at 12 mph, which keeps the surface clean, but with combined swell energy sitting at just 35, there’s hardly any power. It’s what I’d call a knee-high dribbler. Thursday afternoon sees a slight bump to 3ft from the SSW, and energy creeps up to 102 – still marginal – but the conditions are only “ordinary” at best.

Friday the 11th is more of the same: small, weak, and a cross-on wind in the afternoon that’ll put a bit of a crinkle on it. Saturday and Sunday are a write-off with onshore winds and rain showers. Sunday afternoon does offer a brief window of clean, offshore wind from the WNW at 6 mph, but the swell is tiny at 2ft from the SE with only 5-second intervals and 30 units of energy. You’d be fighting for a waist-high slop at best.

From Monday the 14th through to the 20th, it’s a desert. The swell drops to barely 1ft, periods are short or inconsistent, and the wind is either cross, cross-on, or straight on. There’s a brief moment on Saturday the 19th with a fresh NW offshore at 22 mph, but the swell is a pathetic 1ft from the NE. You might get a clean little ripple, but it’s not surfable. Sunday the 20th sees a 0.7ft ESE swell with a 12-second period – long-period but tiny, and the wind is clean in the morning. Still, you’re looking at flatness.

The only glimmer comes around Tuesday the 22nd. Swell builds to 4ft from the E, period at 7 seconds, and energy jumps to 158. That’s a moderate energy reading, but the wind is cross-on from the E at 12 mph, making it choppy. Wednesday the 23rd pushes up to 6ft from the E with a 10-second period and energy of 942 – that’s strong wave energy. But again, the wind is a fresh cross-on at 19 mph, so it’s lumpy and messy. That’s a session for experienced surfers only, and even then, it’s going to be a battle.

After that, it drops back down into weak, choppy, and messy conditions through the 24th and 25th. A strong breeze from the NE on the 25th with 2ft E swell and 86 energy means it’s likely more interesting for kite surfing than paddle surfing.

Overall, there’s nothing here to get excited about. This is a long, quiet stretch. It tends not to stay this poor for long, so keep an eye on the charts, but for now, leave the board at home.

- Rusty

Short Range Forecast

Moderate rain (total 14mm), heaviest on Thu night. Warm (max 29°C on Thu night, min 21°C on Thu night). Winds decreasing (strong winds from the SSW on Wed night, light winds from the SE by Fri afternoon).

Days 5-7 Weather Summary

Moderate rain (total 15mm), heaviest on Sat night. Warm (max 28°C on Sun afternoon, min 23°C on Sat night). Winds decreasing (fresh winds from the SSE on Sat night, light winds from the NE by Mon morning).

Thursday
10
Friday
11
Saturday
12
Sunday
13
Monday
14
Tuesday
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
1
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)
1.5
SSW
5
0.7
S
6
1
SSW
6
0.5
S
6
0.5
S
6
0.5
E
4
0.3
SE
9
0.7
SE
4
1
SE
5
1.3
SSE
6
0.7
SE
5
0.6
SE
5
0.3
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.4
SE
9
0.6
S
4
Wave Graph
Metric surfscale
Energy kJ
121
30
77
18
22
10
12
12
41
111
30
16
13
21
21
20
20
20
9
Wind (km/h)
40
SW
20
W
15
W
15
WNW
10
NNE
10
S
10
SE
20
SE
25
SE
20
S
10
W
10
WNW
10
NNW
10
NE
10
ESE
15
SE
20
SSE
20
SSE
20
S
Wind State
cross
cross-off
cross-off
cross-off
cross-off
cross-on
on
on
on
cross-on
cross-off
off
cross-off
cross
on
on
cross-on
cross-on
cross-on
High Tide
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
1:54AM-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
part cloud
part cloud
rain showers
rain showers
part cloud
clear
part cloud
rain showers
heavy rain
thunderstorm
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
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
11
2
1
14
1
Temp °C
24
25
28
29
23
24
24
23
24
26
25
28
28
25
25
24
23
24
25
Feels °C
20
24
29
31
23
25
24
22
22
27
27
30
29
27
27
24
25
25
27
  • 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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