Surf Forecasts:
Diamond Beach surf forecast from 28 Aug 2026:
- Most powerful swell: Wednesday 2 Sep, 8AM (local time) - 3.5ft (1.0m), 12s period, SE swell with 259 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 1.0m 12s and forecast to arrive on Wednesday (Sep 02) 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 0.6m 3s period and expected on Saturday (Aug 29) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8AM (Wed 2nd Sep) | 3.5ft (1.0m) 12s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
G’day, Rusty here. Look, I’m gonna level with you right off the bat: this upcoming stretch for Diamond Beach is an absolute write-off. We’ve got a solid 16-day window staring us down, and the only thing on offer is a whole lot of nothing. There are no good surf options in that entire period. Not a single day where the stars align for a decent paddle. The combined swell energy barely cracks triple digits a couple of times, hitting a meagre 102 and 160 on Wednesday 2nd and Thursday 3rd of September, but even then the conditions are a mess—fresh cross-onshore wind and lumpy, choppy water. It’s just poor surf, plain and simple.
For the first week, it’s a grind of tiny, weak swell. Friday 28th August starts things off with a risk of thunderstorms, a tiny 1ft ESE swell, and cross-onshore wind. Saturday 29th sees a 3ft ENE swell but with a shocking 4-second period and a moderate cross-shore chop. Through to the end of the first week, we’re looking at the same story: tiny waves in the 1ft to 2ft range and mostly cross or onshore winds. Monday 31st August afternoon goes glassy with a 1ft SE swell, but it’s so small you’d be dragging your knuckles.
The second week doesn’t get any better. Wednesday 2nd September has that 1ft to 2ft SE swell with a period up to 11 seconds and combined energy of 102 and 160, but it’s hammered by a fresh 19 mph SSE wind—lumpy and sloppy. A few mornings, like Thursday 3rd and Friday 4th September, offer clean conditions with light offshore or cross-off wind, but the swell is still too small to bother with, coming in at 1ft to 2ft from the SE. The rest of the period just fades into more tiny, weak swell and messy wind.
This sort of blank run, where there’s literally nothing to recommend, is unfortunately pretty normal for Diamond Beach when the patterns line up like this. It’s exposed to the SE and the optimum swell direction matches, but the size just isn’t there and the wind is always working against us. The water temp sits around 77°, which is a touch warmer than normal for this time of year, but that’s about the only interesting thing.
Bottom line: leave the board in the car, mate. There is no good surf in this 16-day outlook. Check back in a week or so—forecasts can change.
Stay salty,
Rusty
Short Range ForecastLight rain (total 5mm), mostly falling on Fri afternoon. Warm (max 26°C on Fri afternoon, min 20°C on Sat morning). Winds increasing (light winds from the SW on Fri night, fresh winds from the S by Sun afternoon). | Days 4-6 Weather SummaryModerate rain (total 16mm), heaviest on Tue afternoon. Warm (max 25°C on Wed afternoon, min 22°C on Mon night). Wind will be generally light. | ||||||||||||||||||||
Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | |||||||||||||||
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 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | S 4 | SSW 4 | SE 8 | SE 8 | SE 7 | SE 7 | SE 8 | SE 12 | SE 5 | SE 10 | SE 10 | SE 9 | SE 9 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 28 | 28 | 26 | 23 | 16 | 23 | 11 | 19 | 24 | 10 | 9 | 8 | 8 | 11 | 178 | 43 | 85 | 34 | 29 | 39 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross | cross | glassy | cross-off | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-off | cross-off | cross-off |
High Tide | 9:08AM1.44m | 9:20PM1.58m | 9:43AM1.49m | 9:56PM1.56m | 10:18AM1.53m | 10:34PM1.51m | 10:57AM1.56m | 11:17PM1.44m | 11:40AM1.57m | 00:06AM1.37m | 12:30PM1.56m | 1:03AM1.30m | 1:27PM1.54m | 2:05AM1.24m | |||||||
Low Tide | 3:00PM0.08m | 3:25AM-0.03m | 3:42PM0.06m | 4:00AM-0.04m | 4:22PM0.06m | 4:34AM-0.03m | 5:04PM0.08m | 5:09AM0.01m | 5:48PM0.12m | 5:48AM0.06m | 6:40PM0.18m | 6:35AM0.13m | 7:46PM0.24m | ||||||||
 | |  |  | | | | |  | |  |  |  |  | | | | | | | | |
 | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — |
 | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — |
mm | 1 | 4 | — | — | — | — | — | — | — | 1 | — | 3 | 6 | 6 | — | — | — | — | — | — | — |
Temp °C | 25 | 26 | 26 | 22 | 22 | 23 | 24 | 26 | 25 | 24 | 24 | 24 | 23 | 23 | 24 | 24 | 25 | 25 | 30 | 36 | 35 |
Feels °C | 27 | 28 | 28 | 20 | 21 | 24 | 25 | 24 | 24 | 28 | 27 | 26 | 27 | 24 | 26 | 26 | 25 | 26 | 31 | 37 | 36 |
Swell 1 Height (m) Direction Period (s) | ESE 8 | ESE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | ESE 8 | ESE 8 | S 4 | SE 8 | SE 7 | SE 7 | SE 8 | SE 12 | SE 11 | SE 10 | SE 10 | SE 9 | SE 9 | S 5 |
| kJ | 28 | 28 | 26 | 16 | 16 | 23 | 11 | 7 | 7 | 9 | 9 | 8 | 7 | 11 | 73 | 43 | 39 | 34 | 29 | 39 | 7 |
Swell 2 Height (m) Direction Period (s) | SSE 6 | SSE 5 | S 5 | SSE 6 | S 6 | ENE 4 | ENE 5 | — | E 6 | SE 8 | SSW 5 | — | — | S 5 | SE 9 | E 5 | SE 10 | ESE 5 | ESE 5 | — | SE 8 |
| kJ | 12 | 6 | 2 | 4 | 2 | 2 | 2 | — | 1 | 10 | 7 | — | — | 2 | 20 | 20 | 85 | 9 | 4 | — | 18 |
Swell 3 Height (m) Direction Period (s) | E 11 | E 10 | E 10 | E 9 | E 9 | S 5 | E 9 | E 6 | E 9 | — | E 5 | — | SE 15 | SE 14 | — | — | SE 7 | — | S 4 | — | W 4 |
| kJ | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | — | 1 | — | 8 | 7 | — | — | 7 | — | 3 | — | 1 |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 4 | E 5 | — | S 3 | S 4 | SSW 4 | WNW 2 | S 4 | SE 4 | ESE 4 | ESE 4 | SE 12 | SE 5 | SE 5 | SSW 4 | WSW 2 | SW 3 | WNW 3 |
| kJ | — | — | — | 23 | 11 | — | 1 | 19 | 24 | 1 | 4 | 6 | 5 | 10 | 178 | 39 | 29 | 5 | 1 | 4 | 4 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 28 | 42 | 85 | 201 | 325 | 323 | 376 | 2479 | 62 | 289 | 32 | 1174 | 558 | 1240 | 117 | 247 | 1508 | 50 | 144 | 59 | 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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