Surf Forecasts:
Diamond Beach surf forecast from 5 Aug 2026:
- Most powerful swell: Monday 10 Aug, 2AM (local time) - 4ft (1.2m), 6s period, S swell with 102 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 6s and forecast to arrive on Monday (Aug 10) at 2AM. 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 Friday (Aug 07) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Mon 10th Aug) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
G’day, it’s Rusty.
Look, I’m not going to sugarcoat it – the next 16 days at Diamond Beach are looking pretty flat and messy. There’s no standout swell on the horizon, and the first time you might even get wet without it being a total waste is Friday the 7th, and even then, it’s just barely surfable. We’ve got a long stretch of nothing before that, so Wednesday and Thursday are dead – tiny, onshore, and choppy. The wave energy is weak, with readings in the 30s and 40s, and the period is short, around 5 to 6 seconds, so it’s all just soft lumps.
That Friday morning, you might snag a few clean ones. The swell is about 3ft from the south, with a 6-second period. The wind is a light cross-offshore from WSW, so it’ll look nice, but the energy reading is only 86 – that’s weak, mate. It’s surfable if you’re keen, but it’s nothing special. The weekend follows the same script – small, inconsistent, and mostly poor. Saturday morning is a wash, but Saturday afternoon and Sunday morning have that light cross-off breeze again, keeping things clean. You’re still looking at 2ft to 3ft of short-period south swell, and the energy is weak. Fine for a beginner, but there’s no power behind it.
The next week doesn’t improve. There are a few mornings with offshore winds – like Tuesday the 12th and Wednesday the 13th – but the swell drops to 1ft or 2ft. It’s knee-high dribble. The energy readings are in the teens, which is basically nothing. There’s a slight bump in period on the 13th, an 11-second groundswell, but it’s only 0.3ft – that’s a pond, not a wave. Water temp is around 75°, which is about 1° warmer than average for this time of year, so nothing out of the ordinary – just normal warm water.
Into the second week, the 16th sees some short-period east-northeast swell, but it’s cross-onshore and messy. The 17th has a fresh offshore north-northwest wind, but the swell is tiny. The bottom line: there are no solid swells, no good windows, and the consistency is poor. This spot is exposed, so it might pick up a stray pulse, but right now, it’s a blank run. Keep an eye on it, but don’t hold your breath on this one.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Fri night. Warm (max 31°C on Fri afternoon, min 21°C on Fri night). Mainly fresh winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Mon night. Warm (max 34°C on Mon afternoon, min 23°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | |||||||||||||||
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) | SE 6 | SSE 6 | S 5 | S 6 | SSE 5 | S 6 | S 6 | S 4 | S 6 | SE 8 | S 6 | SSE 6 | S 7 | S 6 | S 6 | S 6 | SSE 6 | S 6 | S 6 | S 6 | SSE 6 |
Wave Graph  | |||||||||||||||||||||
 kJ | 25 | 45 | 50 | 22 | 49 | 72 | 24 | 17 | 39 | 23 | 26 | 56 | 32 | 30 | 102 | 51 | 13 | 22 | 20 | 19 | 10 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-on | cross-on | cross | cross-off | cross-on | glassy | cross | cross | cross-off | cross-off | cross-on | cross | cross-off | cross-off | cross-off | off | cross-off | cross-off |
High Tide | 1:49PM1.50m | 2:14AM1.26m | 2:45PM1.52m | 3:17AM1.22m | 3:47PM1.54m | 4:27AM1.21m | 4:56PM1.58m | 5:39AM1.25m | 6:05PM1.64m | 6:46AM1.34m | 7:08PM1.71m | 7:45AM1.44m | 8:03PM1.76m | ||||||||
Low Tide | 8:00PM0.27m | 7:54AM0.14m | 9:17PM0.26m | 9:07AM0.17m | 10:29PM0.20m | 10:20AM0.15m | 11:33PM0.12m | 11:26AM0.09m | 00:31AM0.02m | 12:28PM0.03m | 1:26AM-0.07m | 1:26PM-0.03m | 2:18AM-0.14m | ||||||||
 |  |  | | |  | | |  | | |  | | | | | | | |  | | |
 | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — |
 | — | 8:06 | — | — | 8:05 | — | — | 8:04 | — | — | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — |
mm | 2 | — | 1 | — | — | — | — | 1 | 14 | — | — | — | — | — | — | — | — | 1 | — | 1 | 4 |
Temp °C | 26 | 28 | 27 | 27 | 29 | 28 | 28 | 31 | 30 | 25 | 30 | 29 | 26 | 30 | 29 | 28 | 34 | 32 | 26 | 28 | 27 |
Feels °C | 28 | 28 | 27 | 29 | 30 | 27 | 31 | 32 | 31 | 27 | 32 | 30 | 28 | 32 | 30 | 30 | 34 | 33 | 27 | 30 | 30 |
Swell 1 Height (m) Direction Period (s) | SE 6 | — | — | SE 6 | E 9 | — | S 6 | SE 8 | S 6 | S 6 | SE 8 | SSE 6 | S 7 | S 6 | S 6 | E 10 | SSE 6 | S 6 | S 6 | SE 9 | SSE 6 |
| kJ | 25 | — | — | 10 | 2 | — | 24 | 2 | 39 | 19 | 21 | 56 | 32 | 30 | 39 | 2 | 13 | 22 | 20 | 3 | 10 |
Swell 2 Height (m) Direction Period (s) | S 6 | E 10 | E 10 | E 9 | — | — | SE 7 | E 10 | SE 8 | SE 8 | E 9 | E 9 | E 9 | E 9 | — | — | SE 10 | SE 10 | SE 9 | E 8 | SE 9 |
| kJ | 7 | 2 | 2 | 2 | — | — | 2 | 2 | 10 | 23 | 1 | 2 | 2 | 2 | — | — | 4 | 4 | 3 | 1 | 3 |
Swell 3 Height (m) Direction Period (s) | E 8 | E 8 | E 13 | — | — | — | E 11 | E 10 | E 9 | E 9 | — | — | E 9 | E 11 | E 8 | — | — | — | E 8 | E 12 | — |
| kJ | 1 | 1 | 3 | — | — | — | 2 | 2 | 2 | 2 | — | — | 2 | 2 | 1 | — | — | — | 1 | 3 | — |
Wind waves Height (m) Direction Period (s) | — | SSE 6 | S 5 | S 6 | SSE 5 | S 6 | W 3 | S 4 | W 3 | — | S 6 | WSW 3 | — | — | S 6 | S 6 | SSW 4 | W 3 | — | S 6 | WSW 3 |
| kJ | — | 45 | 50 | 22 | 49 | 72 | 1 | 17 | 1 | — | 26 | 2 | — | — | 102 | 51 | 7 | 2 | — | 19 | 3 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 252 | 1166 | 33 | 153 | 1011 | 153 | 32 | 146 | 2 | 7 | 7 | 28 | 42 | 28 | 50 | 2 | 42 | 65 | 65 | 28 | 289 |
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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