Surf Forecasts:
Diamond Beach surf forecast from 27 Aug 2026:
- Best quality surf: Friday 28 Aug, 2AM (local time) - 1.5ft (0.5m), 9s period, ESE swell with glassy winds.
- Most powerful swell: Wednesday 2 Sep, 11AM (local time) - 3ft (0.9m), 11s period, ESE swell with 221 kJ wave energy.
- Next surfable swell (1★+): Friday 28 Aug, 2AM (local time) - 1.5ft (0.5m), 9s period with ESE 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 2AM. The primary swell is predicted to be 0.5m and 9s period with a secondary swell of 0.8m and 5s. Another secondary swell of 0.4m and 9s is also forecast. Another secondary swell of 0.7m and 4s is also forecast. The wind is predicted to be glassy as the swell arrives.
The most powerful waves expected at Diamond Beach in the next 16 days are 0.9m 11s and forecast to arrive on Wednesday (Sep 02) 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 Tuesday (Sep 01) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Fri 28th Aug) | 1.5ft (0.5m) 9s |
| Best Surf | 2AM (Fri 28th Aug) | 1.5ft (0.5m) 9s |
| Most Powerful | 11AM (Wed 2nd Sep) | 3ft (0.9m) 11s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let’s be straight with you: this is a pretty quiet run for Diamond Beach. We’ve got a long stretch of small, weak surf and mostly messy wind, so don’t go expecting any fireworks.
The first few days are a bit of a write-off. Thursday the 27th is small, with just 1 ft to 3 ft of short-period swell coming from the ESE and SSE, and the cross-onshore wind is making it choppy and lumpy. The combined energy is weak (38 to 176), so there’s not much to work with.
Friday the 28th morning is actually the best of a pretty average bunch. The swell is still tiny at 2 ft from the ESE, but the wind goes glassy—nearly dead calm at 3 mph from the WNW. That’ll make the surface clean, but don’t expect much push. The combined energy is low (66). It’s surfable, but very ordinary.
After that, it’s a long gap of poor conditions. From Friday afternoon all the way through to the end of the first week of September, we’re looking at small surf—mostly 1.0 ft to 2 ft—with cross-shore or onshore winds, choppy conditions, and combined energy barely cracking 40. Not worth paddling out for.
There’s a tiny flicker of hope on Wednesday the 2nd of September. The morning shows 3 ft of ESE swell with a period of 11 seconds, which is a bit longer and more organised. The wind is light from the SSW, so it’s cross-shore and only a little rippled. Combined energy is moderate (281). But it’s still marginal, and the swell direction is cross to the optimum SE for Diamond Beach. It’s not a standout, just a maybe.
The rest of the first half of September stays small and messy. By around Thursday the 11th, we’re back to 1.0 ft and glassy conditions in the morning, but the energy is negligible (17). Honestly, this is a blank run for the most part. Diamond Beach is inconsistent at the best of times, and this stretch is no exception.
So, my honest take? If you’re desperate for a splash, Friday the 28th morning is the cleanest option, but keep your expectations low. For anything with real punch, you’ll be waiting a while. Forecasts can change, but right now, the surf bin is pretty empty.
Rusty.
Short Range ForecastLight rain (total 4mm), mostly falling on Thu night. Warm (max 28°C on Fri night, min 22°C on Sat morning). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 32°C on Tue afternoon, min 23°C on Sat night). Winds decreasing (fresh winds from the S on Sun night, calm by Mon afternoon). | ||||||||||||||||||
Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | ||||||||||||||
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 9 | ESE 8 | SSE 9 | ESE 9 | ESE 8 | SE 8 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 8 | S 4 | SE 8 | SE 7 | SE 7 | SE 7 | SE 7 | E 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 31 | 28 | 103 | 44 | 47 | 18 | 26 | 17 | 16 | 21 | 18 | 40 | 15 | 13 | 8 | 8 | 7 | 7 | 190 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-on | glassy | glassy | cross-off | cross-off | cross | on | cross-on | cross | cross-on | cross | glassy | glassy | cross-off | cross-off | cross-off | cross |
High Tide | 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 | 10:57AM1.56m | 11:17PM1.44m | 11:40AM1.57m | 00:06AM1.37m | ||||||
Low Tide | 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 | 5:04PM0.08m | 5:09AM0.01m | 5:48PM0.12m | |||||||
 |  |  |  |  | | |  | | | | | | | | | | |  | |
 | — | 6:22 | — | — | 6:24 | — | — | 6:24 | — | — | 6:26 | — | — | 6:26 | — | — | 6:26 | — | — |
 | 7:38 | — | 7:37 | — | — | 7:36 | — | — | 7:35 | — | — | 7:32 | — | — | 7:31 | — | — | 7:30 | — |
mm | — | 1 | — | 3 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 27 |
Temp °C | 25 | 26 | 26 | 25 | 24 | 27 | 28 | 23 | 24 | 23 | 24 | 26 | 25 | 25 | 27 | 28 | 26 | 32 | 23 |
Feels °C | 23 | 25 | 24 | 25 | 27 | 29 | 30 | 22 | 25 | 24 | 25 | 24 | 23 | 27 | 30 | 29 | 26 | 33 | 24 |
Swell 1 Height (m) Direction Period (s) | ESE 9 | ESE 8 | ESE 9 | SSE 5 | ESE 8 | SSE 6 | ESE 8 | SE 8 | SE 8 | SE 8 | SE 8 | — | ESE 8 | S 4 | SE 7 | S 4 | SE 7 | SE 7 | S 5 |
| kJ | 31 | 28 | 70 | 32 | 47 | 12 | 26 | 17 | 16 | 21 | 18 | — | 6 | 6 | 8 | 3 | 7 | 7 | 2 |
Swell 2 Height (m) Direction Period (s) | E 13 | E 12 | E 12 | ESE 9 | S 6 | SE 8 | SSE 6 | SE 5 | S 5 | NE 4 | S 5 | — | E 9 | SE 8 | — | SE 7 | S 4 | S 6 | S 5 |
| kJ | 4 | 3 | 3 | 31 | 17 | 18 | 6 | 4 | 2 | 1 | 2 | — | 2 | 9 | — | 8 | 1 | 2 | 5 |
Swell 3 Height (m) Direction Period (s) | E 13 | — | — | ESE 9 | E 11 | SE 6 | E 10 | S 5 | E 9 | S 5 | — | E 9 | — | E 9 | — | — | E 15 | SE 13 | S 5 |
| kJ | 3 | — | — | 44 | 2 | 8 | 2 | 2 | 2 | 1 | — | 2 | — | 1 | — | — | 4 | 7 | 5 |
Wind waves Height (m) Direction Period (s) | S 4 | S 4 | SSE 9 | SSW 4 | — | — | — | NE 3 | ENE 4 | — | — | SSE 8 | S 4 | S 4 | S 4 | W 3 | W 3 | — | E 12 |
| kJ | 14 | 7 | 103 | 19 | — | — | — | 3 | 5 | — | — | 40 | 15 | 13 | 6 | 2 | 1 | — | 190 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 347 | 252 | 1166 | 0 | 0 | 29 | 32 | 201 | 289 | 323 | 323 | 2610 | 597 | 323 | 1144 | 553 | 376 | 540 | 5 |
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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