Surf Forecasts:
Diamond Beach surf forecast from 9 Aug 2026:
- Most powerful swell: Monday 10 Aug, 11PM (local time) - 3ft (0.9m), 4s period, S swell with 28 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 0.9m 4s and forecast to arrive on Monday (Aug 10) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Aug 11) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 10th Aug) | 3ft (0.9m) 4s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, this is Rusty. Let's have a look.
First up, truth be told, the outlook for Diamond Beach over the next sixteen days is a pretty lean stretch. We’ve got a solid two-week gap here where things just aren't coming together. From now right through until the morning of Thursday, August 20th, there’s basically no surf worth paddling out for. The swell is tiny, the winds are messy, and the wave energy is bottomed out at weak levels (values like 10 to 28). It's honestly a bit of a flat spell, and those glassy mornings we see on the 10th and the 20th are just cruel teases with barely a ripple.
Then, finally, on the morning of Thursday, August 20th, there’s a little flicker of hope. We get a pulse of 4 ft swell from the south, with a short period of 6 seconds. The combined energy climbs into moderate territory at 174, which is the best we’ll see across the whole run. The wind goes glassy, and the report notes it as "surfable waves," even if the conditions are still pretty ordinary. It’s not the cleanest setup, but it’s the only window on offer. The water temperature is sitting at 77°, which is a touch warmer than normal for this time of year.
For a beginner-friendly, inconsistent, exposed beach break, you really need everything to line up, and for the next two weeks, it just doesn't. For most of this period, the onshore and cross-shore winds from the south and southeast are going to keep things choppy and uninviting. That one morning on the 20th is your best bet, but with a south swell and a beach break, expect it to close out a bit. If you’re a beginner, the 4 ft might be a touch on the big side for you here. Honestly, for much of this stretch, the setup looks more interesting for the kite crew than for paddle surfing.
Stay patient, keep an eye on the charts. It tends not to stay this flat forever.
Rusty.
Short Range ForecastMostly dry. Warm (max 31°C on Sun afternoon, min 24°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 29°C on Thu afternoon, min 19°C on Fri afternoon). Winds increasing (calm on Wed morning, fresh winds from the NW by Thu afternoon). | ||||||||||||||||||||
Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | |||||||||||||||
AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | ||||||||||||||
Wave Height (m) Direction Period (s) | S 6 | S 6 | S 4 | SSE 6 | S 6 | S 4 | S 6 | SSE 6 | SSE 5 | S 6 | S 6 | SSW 4 | SSE 4 | S 4 | S 4 | ENE 4 | SSE 9 | SSE 7 | SSE 7 | SSE 7 | SSE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 17 | 15 | 8 | 14 | 27 | 24 | 17 | 10 | 6 | 3 | 3 | 22 | 4 | 3 | 3 | 6 | 8 | 9 | 20 | 11 | 5 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-on | cross-off | cross-off | cross-on | cross-off | cross-off | cross-off | cross-off | off | cross-on | cross | cross-off | off | off | off | cross-off | cross-off | off | off | cross-off |
High Tide | 6:05PM1.64m | 6:46AM1.34m | 7:08PM1.71m | 7:45AM1.44m | 8:03PM1.76m | 8:38AM1.52m | 8:53PM1.78m | 9:27AM1.58m | 9:41PM1.75m | 10:16AM1.61m | 10:29PM1.68m | 11:04AM1.60m | 11:16PM1.58m | ||||||||
Low Tide | 11:26AM0.09m | 00:31AM0.02m | 12:28PM0.03m | 1:26AM-0.07m | 1:26PM-0.03m | 2:18AM-0.14m | 2:22PM-0.08m | 3:07AM-0.18m | 3:14PM-0.09m | 3:53AM-0.19m | 4:04PM-0.07m | 4:35AM-0.16m | 4:51PM-0.02m | ||||||||
 |  |  | | |  | | | |  | | | | |  | |  | | | | | |
 | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — |
mm | — | — | — | — | — | — | — | — | — | 2 | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 31 | 31 | 28 | 30 | 31 | 24 | 30 | 30 | 24 | 26 | 27 | 26 | 29 | 27 | 23 | 22 | 20 | 21 | 24 | 23 |
Feels °C | 29 | 31 | 31 | 30 | 32 | 31 | 24 | 30 | 31 | 26 | 28 | 29 | 25 | 28 | 22 | 22 | 19 | 18 | 16 | 18 | 18 |
Swell 1 Height (m) Direction Period (s) | S 6 | SE 7 | S 4 | SSE 6 | SE 10 | SE 10 | S 6 | SSE 6 | SSE 5 | S 6 | SE 8 | SE 8 | SSE 4 | S 4 | S 4 | ENE 4 | ENE 4 | SSE 7 | SSE 7 | SSE 7 | SSE 7 |
| kJ | 17 | 7 | 8 | 14 | 4 | 4 | 17 | 10 | 6 | 2 | 3 | 3 | 3 | 3 | 2 | 6 | 3 | 9 | 20 | 11 | 5 |
Swell 2 Height (m) Direction Period (s) | SE 7 | E 8 | SSE 7 | E 10 | E 8 | — | SE 9 | SE 9 | SE 9 | WNW 3 | — | — | SE 8 | SE 8 | SE 8 | SSE 6 | SSE 9 | SE 9 | NE 4 | NE 4 | NE 5 |
| kJ | 8 | 1 | 4 | 2 | 1 | — | 3 | 3 | 3 | 1 | — | — | 3 | 3 | 3 | 4 | 8 | 3 | 2 | 1 | 1 |
Swell 3 Height (m) Direction Period (s) | E 9 | — | E 11 | E 9 | E 9 | — | E 8 | — | — | SE 8 | E 7 | — | SE 11 | E 11 | E 10 | SE 9 | E 13 | — | E 12 | — | SE 9 |
| kJ | 2 | — | 2 | 2 | 2 | — | 1 | — | — | 3 | 1 | — | 4 | 2 | 2 | 3 | 3 | — | 3 | — | 3 |
Wind waves Height (m) Direction Period (s) | W 3 | S 6 | — | — | S 6 | S 4 | WNW 3 | W 3 | WNW 3 | NW 3 | S 6 | SSW 4 | WNW 3 | — | — | — | — | NW 3 | NW 3 | NW 3 | NNW 3 |
| kJ | 1 | 15 | — | — | 27 | 24 | 5 | 1 | 2 | 1 | 2 | 22 | 2 | — | — | — | — | 5 | 2 | 2 | 1 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 98 | 119 | 323 | 1132 | 1009 | 32 | 273 | 131 | 323 | 1137 | 1158 | 323 | 376 | 376 | 273 | 502 | 392 | 502 | 502 | 1508 | 502 |
Best forecast wave conditions in New Jersey | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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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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