Surf Forecasts:
Diamond Beach surf forecast from 24 Aug 2026:
- Most powerful swell: Friday 28 Aug, 11AM (local time) - 2ft (0.6m), 8s period, ESE swell with 47 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 0.6m 8s and forecast to arrive on Friday (Aug 28) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 24) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Fri 28th Aug) | 2ft (0.6m) 8s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's talk about what's on the menu for Diamond Beach, because the next couple of weeks are a mixed bag.
Right off the bat, we’ve got a long run of flatness. From now through the end of August and into the first days of September, there's very little to get excited about. The water is sitting at a warm 77° right now, about 3° warmer than usual for this time of year – feels like bathwater, but you’ll need that for the long sit-ups waiting for anything with a pulse. We're looking at tiny, short-period slop – nothing really breaking above 1 ft for the rest of August, and with onshore winds most days, it's mostly a washout. Honestly, the first week isn't worth suiting up for.
The whole setup breaks wide open on Thursday the 3rd of September. That afternoon a 3 ft SE swell starts to show its face, with a period of 13 seconds. The combined energy jumps to 336, which is a solid moderate push. Winds look clean, cross-off from the west at 9 mph. It’s not world-beating surf, but it’s the first real sign of life.
Then, the standout window hits Friday the 4th of September. The morning sees a 4 ft ESE swell, but the period is short at 7 seconds, so the energy is higher (349) but the shape might be a bit wonky. The real gem is Friday afternoon: a cleaner 2 ft swell from the SE, but the period stretches back to 13 seconds. The combined energy is 215, which is moderate, but more importantly, we get a solid offshore wind from the NW at 12 mph. That’s the call. It'll be clean, lined up on the banks, and for a spot that can be inconsistent, this is the moment to paddle out. Expect it to be small but fun.
After that, Saturday the 5th gets a bit messy. A 5 ft ENE swell pushes through with big energy (473), but it comes with cross-onshore wind and a short 8-second period, making it pretty average. That’s a bit too much size and wind for cleaner surfing. The following week fades back into smaller, cleaner but weaker swells.
Bottom line: If you can wait, Friday the 4th of September afternoon is your best bet at Diamond Beach. It's the only real standout with clean offshore wind, a long-period groundswell hitting the SE-exposed banks, and the consistency should be enough for a sunset session. Crowds are *sometimes* an issue here, so it might be worth a look.
Stay patient, see you in the water.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 20°C on Tue morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 6mm), mostly falling on Thu morning. Warm (max 28°C on Fri night, min 22°C on Fri morning). Wind will be generally light. | |||||||||||||||||||
Sun 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | ||||||||||||||
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 8 | SSE 6 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | ESE 11 | SE 10 | SE 9 | ESE 8 | S 5 | SSE 4 | ESE 9 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 6 | 14 | 22 | 21 | 19 | 18 | 18 | 11 | 14 | 20 | 26 | 21 | 29 | 32 | 47 | 18 | 17 | 17 | 17 | 18 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | glassy | glassy | cross-off | off | cross-off | cross-off | glassy | cross-on | cross-on | cross-on | cross-on | cross | cross | cross-on | cross-off | cross-off | glassy | cross-off |
High Tide | 5:49PM1.39m | 6:21AM1.14m | 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 | |||||||
Low Tide | 00:01AM0.25m | 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 | |||||||
 |  | |  | | | | | | |  |  | |  | | | | | | | |
 | — | — | 6:20 | — | — | 6:20 | — | — | 6:22 | — | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — |
 | 7:43 | — | — | 7:42 | — | — | 7:39 | — | — | 7:38 | — | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | 2 | 1 | 3 | — | — | — | — | 1 | — |
Temp °C | 27 | 27 | 23 | 25 | 25 | 22 | 25 | 25 | 21 | 23 | 25 | 26 | 26 | 26 | 24 | 26 | 28 | 26 | 28 | 27 |
Feels °C | 26 | 25 | 22 | 25 | 22 | 20 | 24 | 25 | 22 | 23 | 24 | 26 | 26 | 28 | 26 | 30 | 29 | 28 | 30 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 4 | SSE 6 | SSE 6 | SE 12 | S 3 | SE 11 | SE 11 | S 4 | SE 10 | SE 9 | ESE 8 | SE 8 | E 12 | SSE 4 | ESE 8 | SE 8 | S 5 | SSE 6 | SSE 6 | SE 8 |
| kJ | 2 | 11 | 6 | 21 | 2 | 18 | 18 | 3 | 14 | 20 | 26 | 15 | 3 | 11 | 47 | 18 | 12 | 11 | 10 | 18 |
Swell 2 Height (m) Direction Period (s) | ESE 8 | ESE 12 | SE 12 | E 7 | SE 11 | SSE 5 | SSE 5 | ESE 11 | SSE 6 | E 14 | E 14 | E 12 | SE 10 | ESE 9 | SSE 6 | ESE 6 | SE 8 | SE 8 | SE 8 | S 6 |
| kJ | 6 | 14 | 22 | 1 | 19 | 2 | 2 | 11 | 4 | 4 | 4 | 3 | 15 | 32 | 12 | 6 | 17 | 17 | 17 | 1 |
Swell 3 Height (m) Direction Period (s) | SE 12 | E 7 | E 7 | E 7 | SSE 5 | E 6 | E 6 | E 6 | E 6 | NE 6 | E 6 | E 12 | E 12 | E 11 | E 11 | — | ESE 5 | — | E 9 | S 7 |
| kJ | 6 | 4 | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | — | 2 | — | 2 | 1 |
Wind waves Height (m) Direction Period (s) | — | WSW 3 | — | SSE 6 | — | NNW 3 | — | — | — | S 6 | S 4 | S 5 | SSE 4 | — | — | S 5 | — | — | — | S 5 |
| kJ | — | 3 | — | 6 | — | 1 | — | — | — | 6 | 14 | 21 | 29 | — | — | 14 | — | — | — | 5 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 1183 | 30 | 98 | 146 | 98 | 85 | 131 | 289 | 289 | 1166 | 144 | 325 | 252 | 7 | 7 | 50 | 28 | 32 | 30 | 98 |
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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