
Surf Forecasts:
Diamond Beach surf forecast from 12 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 2.5ft (0.8m), 7s period, SSE swell with offshore winds.
- Most powerful swell: Sunday 16 Aug, 11PM (local time) - 5.5ft (1.7m), 6s period, S swell with 205 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 8AM (local time) - 2.5ft (0.8m), 7s period with SSE 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 Monday (Aug 17) at 8AM. The primary swell is predicted to be 0.8m and 7s period. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Diamond Beach in the next 16 days are 1.7m 6s and forecast to arrive on Sunday (Aug 16) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 4s period and expected on Monday (Aug 17) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Mon 17th Aug) | 2.5ft (0.8m) 7s |
| Best Surf | 8AM (Mon 17th Aug) | 2.5ft (0.8m) 7s |
| Most Powerful | 11PM (Sun 16th Aug) | 5.5ft (1.7m) 6s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s coming up for Diamond Beach. I gotta be straight with you – this is a tough one. The entire 16-day outlook is a bit of a struggle. We’ve got a long stretch of tiny, weak waves, and the conditions are mostly battling cross-onshore winds. It’s not going to be easy to find a decent wave.
The real story here is the persistent lack of size. For the first week, from Wednesday the 12th of August all the way through to Monday the 18th, we’re looking at flat to tiny surf, mostly around 0.3ft to 2ft. The combined wave energy is pathetic, barely cracking double digits – we’re talking values like 6, 8, 9, and 18 (weak energy). The winds are a mixed bag of cross and cross-off, which keeps the surface messy. There’s a brief moment on Friday afternoon the 14th with a clean 1ft wave and a light offshore from the NNW, but it’s just too small to get excited about.
The best chance in this whole outlook comes on Wednesday the 19th of August. The morning session is the standout. The wind goes completely glassy – calm, 0 mph – and the sea surface goes glassy. There’s a 2ft swell from the SE with a period of 11 seconds, which is a nice long-period groundswell. The combined energy hits 77 (moderate wave energy). It’s not big, but it’s the cleanest the place will be for a long time. The water temperature is about average for the time of year. Just remember, this spot is a beginner-friendly break, but it’s also inconsistent, so it might not be breaking perfectly. It’s a small window of hope.
After that, things get ugly again. From Thursday the 20th August right through to the end of the outlook on the 27th, we’re back to tiny, wind-affected junk. The winds swing onshore from the south and southeast, getting up to 22 mph on some days, making it lumpy and choppy. The swell flirts with 4ft on Sunday the 16th, but it’s a short-period, wind-driven 3-second wave under a fresh cross-onshore – that’s pure chop. The energy on that day is 83 (weak-moderate), but the quality is poor. Honestly, a setup like this with that much wind and small, poor-quality surf is more interesting for kite surfing than paddle surfing.
So, to sum it up: if you’re desperate for a paddle, the glassy morning of Wednesday the 19th is your only real shot. Otherwise, it’s a long, quiet stretch. Expect a gap of about 7 days after that with no real recommendations. It’s a lean period, but in areas like this, a blank run is pretty normal.
Rusty.
Short Range ForecastLight rain (total 3mm), mostly falling on Tue night. Warm (max 30°C on Thu afternoon, min 23°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Sun night. Warm (max 28°C on Mon afternoon, min 19°C on Sat morning). Winds increasing (light winds from the E on Sat afternoon, strong winds from the SSW by Sun night). | ||||||||||||||||||
Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | ||||||||||||||
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 5 | S 6 | S 6 | S 3 | SSW 3 | SE 8 | SE 8 | SE 9 | SSE 6 | SSE 6 | ENE 4 | SSE 6 | SSE 6 | S 3 | S 5 | S 7 | SSE 7 | SSE 7 | SSE 6 |
Wave Graph | |||||||||||||||||||
3 | 3 | 3 | 5 | 3 | 3 | 3 | 3 | 6 | 6 | 11 | 8 | 15 | 5 | 83 | 171 | 36 | 25 | 14 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross | cross | cross-off | cross-off | off | cross | off | cross-off | cross | on | cross-on | cross-on | cross-on | cross-off | off | off | cross-off |
High Tide | 8:03PM1.76m | 8:38AM1.52m | 8:53PM1.78m | 9:27AM1.58m | 9:41PM1.75m | 10:16AM1.61m | 10:29PM1.68m | 11:04AM1.60m | 11:16PM1.58m | 11:53AM1.57m | 00:04AM1.46m | 12:41PM1.53m | 00:53AM1.34m | ||||||
Low Tide | 2:18AM-0.14m | 2:22PM-0.08m | 3:07AM-0.18m | 3:14PM-0.09m | 3:53AM-0.19m | 4:04PM-0.07m | 4:35AM-0.16m | 4:51PM-0.02m | 5:15AM-0.09m | 5:37PM0.06m | 5:55AM0.02m | 6:24PM0.16m | |||||||
— | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | |
7:59 | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | |
mm | 2 | 1 | — | — | — | — | — | — | — | — | — | — | — | 1 | — | 6 | — | — | — |
Temp °C | 27 | 24 | 28 | 27 | 27 | 30 | 29 | 25 | 26 | 27 | 21 | 22 | 23 | 23 | 25 | 26 | 25 | 28 | 26 |
Feels °C | 29 | 25 | 29 | 27 | 29 | 31 | 30 | 25 | 28 | 27 | 19 | 22 | 21 | 21 | 23 | 24 | 26 | 26 | 27 |
Swell 1 Height (m) Direction Period (s) | SSE 5 | S 6 | S 6 | SE 8 | SSW 3 | S 3 | — | S 4 | SSE 6 | SSE 6 | SSE 6 | ENE 4 | ENE 5 | NE 4 | — | — | SSE 7 | SSE 7 | SSE 6 |
3 | 2 | 2 | 3 | 2 | 1 | — | 2 | 6 | 6 | 4 | 3 | 2 | 1 | — | — | 36 | 25 | 14 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 8 | SE 8 | E 8 | SE 8 | SE 8 | SE 8 | SE 9 | SE 9 | SE 9 | SE 9 | SSE 6 | SE 9 | SE 9 | — | — | — | NE 4 | SSE 9 |
3 | 3 | 3 | 1 | 3 | 3 | 3 | 3 | 3 | 3 | 3 | 8 | 3 | 3 | — | — | — | 1 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | E 8 | E 8 | — | S 5 | S 5 | — | S 6 | — | — | — | SE 9 | SE 9 | — | — | — | — | SE 10 | NE 4 |
— | 1 | 1 | — | 1 | 1 | — | 1 | — | — | — | 3 | 3 | — | — | — | — | 4 | 1 | |
Wind waves Height (m) Direction Period (s) | — | — | — | S 3 | — | — | — | NE 3 | — | N 2 | ENE 4 | — | SSE 6 | S 3 | S 5 | S 7 | NW 3 | — | — |
— | — | — | 5 | — | — | — | 2 | — | 1 | 11 | — | 15 | 5 | 83 | 171 | 1 | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 335 | 1393 | 1145 | 1009 | 260 | 2404 | 1058 | 1158 | 376 | 502 | 664 | 3151 | 737 | 1183 | 1183 | 30 | 29 | 91 | 123 |
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.











