Surf Forecasts:
Diamond Beach surf forecast from 24 Aug 2026:
- Best quality surf: Friday 28 Aug, 8AM (local time) - 2ft (0.6m), 7s period, SE swell with cross-offshore winds.
- Most powerful swell: Thursday 27 Aug, 11PM (local time) - 3.5ft (1.1m), 7s period, SE swell with 121 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 8AM (local time) - 2ft (0.6m), 7s period with SE 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 Friday (Aug 28) at 8AM. The primary swell is predicted to be 0.6m and 7s period with a secondary swell of 0.5m and 6s. 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 7s and forecast to arrive on Thursday (Aug 27) 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 4s period and expected on Monday (Aug 31) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Fri 28th Aug) | 2ft (0.6m) 7s |
| Best Surf | 8AM (Fri 28th Aug) | 2ft (0.6m) 7s |
| Most Powerful | 11PM (Thu 27th Aug) | 3.5ft (1.1m) 7s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, let’s get into it.
Look, I’m not gonna sugarcoat it. For the next week and a half, Diamond Beach (New South Wales) is pretty much flat. We’re talking about a long, drawn-out stretch of barely a ripple from Monday the 24th of August all the way through to Wednesday the 2nd of September. The swell just isn't there, and when it does show a little bump, it’s short-period junk or the wind’s messing it up. No surf to speak of. That’s a solid ten days of nothing worth paddling out for.
But then things get interesting. The real stand-out, the only time you should even bother checking your board, is Thursday the 3rd of September. Overnight, a solid groundswell pushes in from the SE with a long 15-second period. Swell heights hit 5ft in the morning, bumping to just over 5ft by afternoon. The combined swell energy jumps to 1986 in the morning and 2101 in the afternoon – that’s strong to very strong energy. Conditions are clear, and we’ve got a light offshore breeze from the NNW in the morning, switching to a moderate NW offshore in the arvo. That’s clean, lined-up surf. This is proper, powerful stuff. At that size and with that energy, it’s only for experienced surfers. The water temp is sitting at 77°, which is a touch warmer than normal for this time of year – nice for a late-winter session.
After that, things drop off quickly. Friday the 4th still has some waist-to-chest high swell from the ESE at 4-5ft, 14-second period, but the wind is a moderate cross-offshore from the WNW and the energy’s dropped to 626-811. It’s surfable but nothing special. By Saturday the 5th, it’s back to small, weak waves, and the following week looks mostly tiny or blown out.
So, to be clear: the only day worth circling on the calendar is Thursday the 3rd of September. Get on it if you can handle some grunt. The rest of the window is a write-off.
Rusty
Short Range ForecastLight rain (total 2mm), mostly falling on Wed night. Warm (max 27°C on Mon afternoon, min 20°C on Mon night). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 12mm), heaviest on Thu morning. Warm (max 27°C on Fri night, min 22°C on Thu afternoon). Wind will be generally light. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | ESE 12 | ESE 12 | SE 11 | SE 11 | SE 11 | SE 11 | SE 9 | SE 9 | ESE 9 | SE 8 | ESE 8 | SSE 7 | ESE 8 | ESE 8 | SSE 7 | ESE 8 | SE 8 | SE 8 | SE 8 | S 4 | SSE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 14 | 13 | 19 | 18 | 18 | 18 | 14 | 19 | 31 | 102 | 47 | 91 | 46 | 45 | 29 | 53 | 16 | 17 | 18 | 18 | 40 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-off | cross-off | on | cross-on | cross-on | on | on | cross | cross | cross-on | cross-off | on | cross-on | cross-off | cross | cross | cross-off |
High Tide | 6:42PM1.45m | 7:11AM1.22m | 7:27PM1.51m | 7:54AM1.30m | 8:07PM1.56m | 8:32AM1.37m | 8:44PM1.59m | 9:08AM1.44m | 9:20PM1.58m | 9:43AM1.49m | 9:56PM1.56m | 10:18AM1.53m | 10:34PM1.51m | ||||||||
Low Tide | 12:00PM0.28m | 00:46AM0.18m | 12:47PM0.22m | 1:29AM0.11m | 1:33PM0.16m | 2:09AM0.04m | 2:17PM0.12m | 2:48AM-0.01m | 3:00PM0.08m | 3:25AM-0.03m | 3:42PM0.06m | 4:00AM-0.04m | 4:22PM0.06m | 4:34AM-0.03m | |||||||
 | |  | | | | |  |  |  | |  | | | | | | | | |  | |
 | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — |
 | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — |
mm | — | — | — | — | — | — | — | — | 2 | 4 | 3 | 2 | — | — | 1 | — | — | 2 | — | 1 | — |
Temp °C | 24 | 27 | 26 | 21 | 25 | 25 | 22 | 24 | 25 | 24 | 23 | 24 | 24 | 26 | 27 | 27 | 27 | 27 | 25 | 28 | 27 |
Feels °C | 23 | 26 | 26 | 19 | 24 | 24 | 22 | 22 | 24 | 25 | 24 | 25 | 26 | 29 | 28 | 30 | 28 | 28 | 28 | 29 | 28 |
Swell 1 Height (m) Direction Period (s) | SSE 6 | SSE 6 | SE 11 | SE 11 | SE 11 | SE 11 | SE 9 | SE 9 | ESE 9 | ESE 9 | ESE 8 | ESE 9 | ESE 8 | ESE 8 | SSE 7 | SSE 6 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 6 |
| kJ | 6 | 6 | 19 | 18 | 18 | 18 | 14 | 19 | 31 | 65 | 41 | 29 | 46 | 45 | 29 | 6 | 16 | 17 | 18 | 11 | 40 |
Swell 2 Height (m) Direction Period (s) | ESE 12 | ESE 12 | SSE 5 | SSE 5 | SE 5 | E 6 | S 6 | E 5 | E 13 | E 12 | E 12 | ESE 8 | S 6 | E 11 | SE 8 | SE 8 | S 6 | — | — | E 9 | SE 8 |
| kJ | 14 | 13 | 3 | 2 | 1 | 1 | 2 | 1 | 4 | 3 | 3 | 47 | 18 | 2 | 17 | 32 | 2 | — | — | 2 | 3 |
Swell 3 Height (m) Direction Period (s) | E 7 | E 7 | E 7 | E 6 | E 7 | SE 4 | E 6 | E 14 | E 6 | — | — | E 11 | E 11 | — | E 10 | E 10 | E 9 | E 9 | — | — | SE 19 |
| kJ | 1 | 4 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | — | — | 2 | 2 | — | 2 | 2 | 2 | 2 | — | — | 15 |
Wind waves Height (m) Direction Period (s) | — | — | — | NNW 2 | — | — | — | S 5 | S 4 | SE 8 | SE 5 | SSE 7 | — | S 6 | — | ESE 8 | E 4 | S 3 | S 3 | S 4 | SW 4 |
| kJ | — | — | — | 1 | — | — | — | 2 | 15 | 102 | 47 | 91 | — | 16 | — | 53 | 4 | 5 | 3 | 18 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 65 | 32 | 98 | 376 | 419 | 289 | 289 | 1166 | 158 | 123 | 249 | 7 | 7 | 23 | 2 | 85 | 1001 | 85 | 158 | 151 | 2 |
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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