Diamond Beach Surf Break

Lat Long: 38.96° N 74.85° W

Diamond Beach Surf Forecast and Surf Report

Issued: 7 pm 17 Aug 2026 (local time)

Forecast update in  hr  min

Today's Diamond Beach sea temperature is
24.8° C
1.3° 

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 18 Aug 2026:

  • Best quality surf: Sunday 23 Aug, 11AM (local time) - 2.5ft (0.8m), 5s period, SSE swell with cross-offshore winds.
  • Most powerful swell: Sunday 23 Aug, 11PM (local time) - 3.5ft (1.1m), 6s period, S swell with 95 kJ wave energy.
  • Next surfable swell (1★+): Sunday 23 Aug, 11AM (local time) - 2.5ft (0.8m), 5s period with SSE 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 Sunday (Aug 23) at 11AM. The primary swell is predicted to be 0.8m and 5s period with a secondary swell of 0.5m and 4s. Another secondary swell of 0.4m and 6s 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 1.1m 6s and forecast to arrive on Sunday (Aug 23) 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 0.4m 3s period and expected on Monday (Aug 24) at 8PM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sun 23rd Aug)2.5ft (0.8m) 5s
Best Surf11AM (Sun 23rd Aug)2.5ft (0.8m) 5s
Most Powerful11PM (Sun 23rd Aug)3.5ft (1.1m) 6s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s cookin’ for Diamond Beach. Gotta be straight with you – this stretch of sand is lookin’ pretty quiet for the next couple of weeks. We’ve got a real dry spell on our hands, so don’t be holding your breath for any fireworks.

The outlook starts with a big fat gap. From Tuesday the 18th of August right through until the 22nd, it’s all tiny, weak, and messy. The swell is barely a wobble, with the combined energy of all swells directed here a measly 21 on the Tuesday morning, and it bounces around in the low double digits. You’re lookin’ at waves mostly under 2ft, and the periods are short and crumbly. Winds are a mixed bag but with so little swell, it’s just not worth paddling out. The water temp is about average for the time of year, nothing wild.

The first real chance of anything surfable comes on Sunday the 23rd of August. Early morning we’ve got a bit of a pulse – a 3ft swell from the SSE, with a period of 5 seconds. The combined energy hits 63, which is still weak, but it’s the best we’ve seen. A clean cross-offshore wind from the WSW will have it looking tidy, but the wave quality is just ordinary. It’s still a beginner-friendly size, but the crowds are sometimes a problem here, so you might have a few heads bobbing around for this tiny blip.

Things go quiet again until Thursday the 27th of August. The afternoon finally shows a bit more promise. The swell bumps up to 4ft from the S, with a period of 7 seconds. The combined energy jumps to 298, which is a more solid, moderate energy. The wind swings to a cross-offshore from the SW, keeping it clean. This is probably the standout window of the whole forecast, but it’s still only a marginal call. It’s a bit more size, but the quality is nothing to rave about.

The end of the month sees another tease on Monday the 31st of August. The morning shows a 5ft swell from the E, with a period of 7 seconds and a combined energy of 242. The wind is a light cross-shore, but the afternoon gets ruined by strong onshore winds. By Tuesday the 1st of September, it’s blown out and messy again.

The long-range stuff is just a waiting game. The second week is a parade of tiny, weak, and choppy days. The swell direction is mostly from the SE, which is okay for the exposure here, but the size and energy just aren’t there. Honestly, for a spot that’s inconsistent at the best of times, this is a pretty normal blank run. Don’t lose hope though – the forecasts can shift, and a bit of juice might pop up.

For now, if you’re desperate for a splash, the Sunday morning (23rd) or the Thursday afternoon (27th) are your best bets. Keep your expectations low, and you might just find a fun little wave.

Rusty.

Short Range Forecast

Light rain (total 7mm), mostly falling on Mon night. Warm (max 29°C on Mon night, min 24°C on Mon night). Wind will be generally light.

Days 5-7 Weather Summary

Heavy rain (total 36mm), heaviest during Thu night. Warm (max 28°C on Sun afternoon, min 22°C on Thu night). Wind will be generally light.

Tuesday
18
Wednesday
19
Thursday
20
Friday
21
Saturday
22
Sunday
23
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
1
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)
0.3
SSE
6
0.4
SE
6
0.3
SE
12
0.5
SE
11
0.4
SE
10
0.4
SE
9
0.3
SE
9
0.2
ESE
8
0.2
ESE
8
0.4
SSE
4
0.4
SE
4
0.8
ENE
4
0.7
E
5
0.9
E
5
0.6
E
5
0.5
E
6
0.8
SSE
5
0.8
SSE
6
0.7
SSE
6
Wave Graph
Metric surfscale
Energy kJ
7
14
21
56
34
22
12
7
7
7
7
19
21
42
20
16
35
42
43
Wind (km/h)
10
W
5
NNE
10
SE
10
SW
15
W
10
SW
10
SSW
10
SE
10
SSE
10
WNW
0
NE
5
SE
10
E
5
SE
15
SE
10
SSW
15
WSW
10
SSW
15
SW
Wind State
cross-off
glassy
on
cross
cross-off
cross
cross
on
on
cross-off
glassy
on
cross-on
glassy
on
cross
cross-off
cross-on
cross
High Tide
00:53AM1.34m
1:28PM1.47m
1:42AM1.23m
2:16PM1.42m
2:32AM1.15m
3:04PM1.37m
3:25AM1.09m
3:56PM1.35m
4:23AM1.07m
4:53PM1.35m
5:24AM1.09m
5:49PM1.39m
Low Tide
6:35AM0.13m
7:14PM0.26m
7:19AM0.23m
8:13PM0.33m
8:12AM0.32m
9:17PM0.36m
9:14AM0.37m
10:19PM0.35m
10:15AM0.37m
11:13PM0.31m
11:10AM0.33m
00:01AM0.25m
thunderstorm
clear
rain showers
clear
clear
clear
clear
cloud
part cloud
thunderstorm
clear
part cloud
rain showers
light rain
thunderstorm
mod rain
thunderstorm
cloud
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:18
6:18
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:52
7:50
7:49
7:47
7:45
7:45
7:43
 mm
6
1
14
4
3
2
8
5
1
Temp °C
29
25
26
26
25
29
28
26
27
24
24
24
24
23
24
25
24
28
28
Feels °C
32
29
30
29
24
28
28
29
29
27
28
26
25
25
26
28
26
30
29
  • 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 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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