Surf Forecasts:
Diamond Beach surf forecast from 31 Jul 2026:
- Most powerful swell: Monday 3 Aug, 11PM (local time) - 4ft (1.2m), 7s period, S swell with 155 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 1.2m 7s and forecast to arrive on Monday (Aug 03) 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 0.3m 3s period and expected on Saturday (Aug 01) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Mon 3rd Aug) | 4ft (1.2m) 7s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, Rusty here. Let's get straight into it. Look, mate, I've scanned the charts for the next couple of weeks and honestly, it's a bit of a flat spell for us. The whole 16-day window is a write-off. There's just nothing to get excited about, and I mean nothing.
The first solid sign of any surf comes on Friday, July 31st, but it's a total dud. We're looking at Diamond Beach, and it's offering up a tiny 1ft SSE swell with a weak period of 8 seconds. The combined energy is a measly (28), and with a light breeze blowing offshore, it keeps it clean, but it's just too small and weak to do anything with. The water temp is about average for the time of year, nothing special.
This poor pattern just locks in. Saturday, August 1st, the swell drops to 1.0ft, and the wind swings cross-onshore, making it choppy. Sunday is the same story with a 2ft SSE swell, but the period drops to a pathetic 6 seconds, so it's just bumpy and weak. The wind stays onshore all week, and we get a few days of risk of thunderstorms and fresh breezes making it lumpy. The combined energy barely gets above (56) on Monday, August 3rd, and even then, it's for a 3ft swell that's totally blown out.
We roll through the second week and it's the same song. A few morning windows show a clean face, like on Sunday, August 9th, when the wind goes glassy, but the swell is a microscopic 0.7ft from the ESE. Even with a glassy surface, there's no power behind it. The energy is just (7). You'd be bobbing around on a lake.
The whole 16 days is a blank run. This is a classic case of "don't bother." The forecasts can change, but right now, there isn't a single day that's worth paddling out for. The surf is just too small, and when there's a little bump, the wind is on it. For a spot like Diamond Beach, which is exposed, it's a real dry spell.
Keep the board waxed for the next window, but this one's a write-off.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Fri morning. Warm (max 26°C on Fri afternoon, min 22°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 34mm), heaviest during Wed morning. Warm (max 27°C on Mon afternoon, min 22°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||
Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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) | SSE 8 | SSE 8 | SE 8 | SE 9 | SSE 8 | SSE 7 | S 4 | SSE 6 | SSE 4 | SSE 4 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SE 7 | SE 7 | SE 6 |
Wave Graph  | |||||||||||||||||||
 kJ | 23 | 26 | 16 | 20 | 13 | 30 | 22 | 22 | 11 | 13 | 56 | 68 | 57 | 35 | 25 | 15 | 7 | 7 | 7 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross-on | cross-on | cross | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:47PM1.57m | 10:15AM1.34m | 10:22PM1.54m | 10:52AM1.37m | 10:58PM1.49m | 11:30AM1.40m | 11:39PM1.44m | 12:12PM1.43m | 00:25AM1.38m | 12:58PM1.47m | 1:17AM1.31m | 1:49PM1.50m | 2:14AM1.26m | ||||||
Low Tide | 3:58AM-0.00m | 4:03PM0.14m | 4:33AM-0.01m | 4:42PM0.15m | 5:05AM-0.00m | 5:20PM0.17m | 5:38AM0.02m | 6:03PM0.20m | 6:13AM0.05m | 6:53PM0.23m | 6:57AM0.10m | 8:00PM0.27m | |||||||
 |  | |  |  | | | | |  |  | |  |  | | |  | |  | |
 | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | 8:13 | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — |
mm | — | 2 | — | — | — | — | — | — | — | 4 | 3 | 3 | 3 | 5 | 5 | 3 | 6 | 2 | — |
Temp °C | 23 | 24 | 26 | 25 | 25 | 26 | 25 | 24 | 25 | 26 | 26 | 27 | 23 | 23 | 25 | 24 | 25 | 26 | 25 |
Feels °C | 23 | 26 | 26 | 24 | 26 | 25 | 24 | 25 | 25 | 27 | 25 | 26 | 24 | 23 | 25 | 25 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SE 8 | SE 9 | SSE 8 | E 6 | SE 8 | SE 8 | S 8 | SE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 7 | SSE 6 | SE 7 | SE 7 | SE 6 |
| kJ | 23 | 26 | 16 | 20 | 13 | 1 | 11 | 3 | 4 | 7 | 56 | 68 | 57 | 35 | 25 | 15 | 7 | 7 | 7 |
Swell 2 Height (m) Direction Period (s) | ENE 5 | ENE 5 | NE 5 | E 6 | SE 9 | ENE 6 | E 6 | S 8 | E 6 | SE 9 | — | — | E 8 | E 8 | SE 8 | ESE 7 | S 6 | S 6 | SE 8 |
| kJ | 5 | 2 | 1 | 3 | 3 | 3 | 1 | 1 | 1 | 3 | — | — | 1 | 1 | 3 | 5 | 3 | 1 | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | E 6 | ESE 10 | E 6 | — | — | SE 9 | E 6 | SE 9 | — | — | — | — | E 8 | E 8 | E 8 | SE 9 | E 9 |
| kJ | — | — | 1 | 9 | 1 | — | — | 3 | 1 | 3 | — | — | — | — | 1 | 1 | 1 | 3 | 2 |
Wind waves Height (m) Direction Period (s) | — | — | — | SSW 3 | S 4 | SSE 7 | S 4 | SSE 6 | SSE 4 | SSE 4 | — | — | — | — | ENE 3 | ENE 4 | ENE 3 | E 3 | ESE 4 |
| kJ | — | — | — | 7 | 1 | 30 | 22 | 22 | 11 | 13 | — | — | — | — | 4 | 1 | 2 | 3 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 85 | 98 | 346 | 91 | 144 | 1001 | 597 | 392 | 1166 | 1038 | 597 | 182 | 247 | 156 | 372 | 144 | 1009 | 1135 | 1132 |
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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