Diamond Beach Surf Break

Lat Long: 38.96° N 74.85° W

Diamond Beach Surf Forecast and Surf Report

Issued: 1 am 12 Jul 2026 (local time)

Forecast update in  hr  min

Today's Diamond Beach sea temperature is
22.7° C
0.2° 

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 12 Jul 2026:

  • Best quality surf: Sunday 19 Jul, 8AM (local time) - 4ft (1.2m), 5s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Monday 13 Jul, 8AM (local time) - 3.5ft (1.0m), 6s period, ESE swell with 80 kJ wave energy.
  • Next surfable swell (1★+): Sunday 19 Jul, 8AM (local time) - 4ft (1.2m), 5s period with ENE 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 (Jul 19) at 8AM. The primary swell is predicted to be 1.2m and 5s period with a secondary swell of 0.4m and 6s. Another secondary swell of 0.1m and 8s 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 1.0m 6s and forecast to arrive on Monday (Jul 13) at 8AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Wednesday (Jul 15) at 5AM.

Wave TypeTime (EDT) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Sun 19th Jul)4ft (1.2m) 5s
Best Surf 8AM (Sun 19th Jul)4ft (1.2m) 5s
Most Powerful 8AM (Mon 13th Jul)3.5ft (1.0m) 6s

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


Howdy, Rusty here. Let’s break down the next couple of weeks. We’re staring down a long, quiet period. The first chance of anything worth paddling for doesn’t show up until the weekend of July 19th, so we’re looking at a solid week of flat or near-flat, messy conditions before that.

For the first week, from Sunday the 12th through Saturday the 18th, the swell is tiny and the wind is mostly junk. We’re talking knee-high dribble or less, with a lot of choppy, cross-onshore slop. The water temp is sitting right around 73°F, which is bang on average for this time of year – nothing weird there. It’s just one of those bleak summer runs where you’re better off waxing your board and waiting.

The first glimmer of hope pops up on Sunday the 19th. We see a bit of a pulse from the ENE, pushing around 5ft, but it’s coming from a short period of 6 seconds. That’s weak, windswell energy. The combined energy is moderate, at 159. The wind is light and offshore from the West, which is a big positive. That means the surface will be clean. For a beginner spot like Diamond Beach, this is marginal – the swell is under 5ft, so it’s not too big, but the quality is pretty ordinary. It’s a surfable wave, but it’s not going to be a standout.

Monday the 20th has a little more energy in the water, with combined energy hitting 212 (moderate), and the swell from the ENE again at 4ft. The period is a bit better at 8 seconds. The morning looks clean with a light offshore from the NNW. This is probably the best of a very average bunch. The waves will be small, clean, and maybe a little more fun than the day before, but don’t expect any barrels.

After that, it drops off again. The 21st through the 27th is a real snoozer. Swell stays under 3ft, the wind is mostly onshore or cross, and the energy is weak. The only thing worth noting is a tiny window on the morning of the 25th and 26th, where we get a little knee-high SSE swell with clean conditions. It’s barely surfable, but if you’re desperate, you could get a few grovelly turns on a longboard.

The end of the period, on the 27th, finally shows a moment of glassy conditions with light rain and a wind from the North. The swell is still tiny at 2ft, and the energy is weak (28). It’s not really a call to action, but it’s a sign that things might be turning.

To sum it up: the standout is the morning of Monday the 20th at Diamond Beach. The swell is 4ft from the ENE, the wind is offshore, and the surface will be clean. It’s small, the wave quality is only marginal, and it’s an inconsistent spot, so you’ll be waiting for sets. But in a 16-day window that’s mostly a write-off, that’s your best bet. For the rest, leave the board in the car.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue afternoon, min 22°C on Mon night). Wind will be generally light.

Days 4-6 Weather Summary

Light rain (total 2mm), mostly falling on Thu afternoon. Warm (max 34°C on Wed afternoon, min 23°C on Wed morning). Wind will be generally light.

Sunday
12
Monday
13
Tuesday
14
Wednesday
15
Thursday
16
Friday
17
Saturday
18
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)
0.9
E
5
0.8
E
5
0.8
ESE
6
0.7
SE
6
0.7
ESE
7
0.4
ESE
7
0.3
SE
9
0.4
ESE
8
0.4
ESE
8
0.4
SE
8
0.4
SE
8
0.6
S
5
0.4
S
5
0.2
ESE
8
0.4
S
4
0.2
ESE
8
0.2
ESE
8
0.1
E
14
0.4
SE
8
0.7
ENE
4
1.1
NE
5
Wave Graph
Metric surfscale
Energy kJ
42
34
49
42
41
20
12
23
23
15
16
16
7
6
6
6
6
4
24
13
47
Wind (km/h)
25
E
20
E
15
SE
15
ESE
15
SE
10
SSW
10
WSW
20
S
25
SW
20
WSW
15
SW
20
WSW
5
SE
5
SW
15
WNW
10
NW
15
WNW
0
NNE
10
SSW
25
S
20
W
Wind State
cross-on
cross-on
on
cross-on
on
cross-on
cross-off
cross-on
cross-off
cross-off
cross
cross-off
on
cross
cross-off
off
cross-off
glassy
cross-on
cross-on
cross-off
High Tide
7:19PM1.76m
7:58AM1.40m
8:15PM1.81m
8:53AM1.46m
9:08PM1.83m
9:47AM1.51m
10:01PM1.80m
10:40AM1.53m
10:52PM1.73m
11:34AM1.53m
11:45PM1.63m
12:28PM1.52m
00:36AM1.52m
Low Tide
12:38PM-0.00m
1:42AM-0.09m
1:37PM-0.05m
2:37AM-0.16m
2:35PM-0.08m
3:29AM-0.20m
3:31PM-0.09m
4:18AM-0.21m
4:23PM-0.07m
5:04AM-0.19m
5:13PM-0.01m
5:49AM-0.12m
6:04PM0.07m
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
rain showers
thunderstorm
clear
part cloud
part cloud
rain showers
thunderstorm
thunderstorm
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:43
5:43
5:45
5:45
5:46
5:47
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
8:24
8:24
8:23
8:23
8:22
8:22
8:22
 mm
1
1
2
5
8
Temp °C
24
24
23
23
23
23
24
26
26
27
34
34
27
28
28
27
30
28
24
25
23
Feels °C
22
21
21
22
22
23
23
23
23
25
34
35
27
28
30
24
27
27
26
27
24
  • 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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