Surf Forecasts:
Diamond Beach surf forecast from 19 Aug 2026:
- Most powerful swell: Wednesday 26 Aug, 2PM (local time) - 4.5ft (1.3m), 6s period, SE swell with 107 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 1.3m 6s and forecast to arrive on Wednesday (Aug 26) at 2PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 3s period and expected on Monday (Aug 24) at 11AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Wed 26th Aug) | 4.5ft (1.3m) 6s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, let’s take a look at what’s cookin’ for Diamond Beach over the next couple of weeks. I’m not gonna lie to ya, it’s pretty flat out there for a long stretch.
Right from Wednesday the 19th through to the end of August, there’s just nothing doing. Swell heights are barely a whisper, mostly around 0.7 ft to 3 ft, but the problem is the energy is weak – we’re talking combined swell energy values between 9 and 98, which is practically nothing. The waves that do show are small, short-period slop with periods mostly 4 to 9 seconds, meaning no push or shape. Winds are all over the place, sometimes clean but the swell just isn’t there to work with. Even when Thursday the 27th brings a clean offshore breeze from the WNW, it’s only 2 ft of SSE swell – not worth paddling out for.
The first real glimmer of hope shows up on Wednesday the 2nd of September. That morning we see a 2 ft ESE swell with a period of 11 seconds – that’s a bit more of a groundswell, so it’ll have a little more energy though it might break a bit straight at a beach break like Diamond Beach. The combined energy is 97, so moderate, and there’s a light offshore from the NNW. It’s described as surfable but ordinary. The afternoon glass off with a 2 ft ESE swell and 10-second period bumps the energy to 116, making it the best looking window in the whole run. Still, it’s small and nothing to get stoked about – just the best of a very quiet spell.
As for the water temp, it’s sitting at 75°F with an anomaly of 1°, so pretty much average for this time of year.
Because there are no standout days with decent size, clean conditions and good consistency, I can’t really point you to one break over another – Diamond Beach is the only spot on offer and it’s exposed to the SE, which is where the tiny swells are coming from. The crowds are listed as “sometimes,” so you might have company on that Wednesday afternoon glass-off if anyone else is desperate.
Honestly, this is a lean run. Forecasts can change, but right now this area is in a real flat spell. If you’re a kite surfer, some of those choppier days with onshore winds and a bit more bump might be more your scene, but for a paddle surfer, it’s a waiting game.
Stay patient, mate.
Rusty
Short Range ForecastHeavy rain (total 68mm), heaviest during Fri night. Warm (max 28°C on Wed afternoon, min 22°C on Fri afternoon). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Sat morning. Warm (max 27°C on Sun night, min 22°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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 10 | SE 9 | SE 9 | SE 8 | S 4 | SE 8 | NE 4 | ENE 5 | ESE 9 | SSE 5 | ESE 8 | SSE 4 | SSE 5 | SSE 5 | S 6 | SE 12 | SE 12 | SE 11 | SE 11 | SE 11 | SE 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 22 | 12 | 11 | 7 | 18 | 14 | 8 | 7 | 10 | 7 | 6 | 11 | 9 | 18 | 22 | 21 | 19 | 18 | 18 | 18 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | off | cross-on | cross-off | cross | glassy | cross-on | cross-off | cross-on | glassy | cross | cross-on | cross-off | cross-off | on | glassy | cross-on | cross-on | cross-on |
High Tide | 2:16PM1.42m | 2:32AM1.15m | 3:04PM1.37m | 3:25AM1.09m | 3:56PM1.35m | 4:23AM1.07m | 4:53PM1.35m | 5:24AM1.09m | 5:49PM1.39m | 6:21AM1.14m | 6:42PM1.45m | 7:11AM1.22m | 7:27PM1.51m | ||||||||
Low Tide | 8:13PM0.33m | 8:12AM0.32m | 9:17PM0.36m | 9:14AM0.37m | 10:19PM0.35m | 10:15AM0.37m | 11:13PM0.31m | 11:10AM0.33m | 00:01AM0.25m | 12:00PM0.28m | 00:46AM0.18m | 12:47PM0.22m | 1:29AM0.11m | ||||||||
 | |  |  |  |  |  |  |  |  | | | | | | | |  | | | | |
 | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:20 | — | — | 6:20 | — | — |
 | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | — | 7:45 | — | — | 7:43 | — | — | 7:42 | — | — | 7:39 | — |
mm | — | — | — | — | 9 | 8 | — | 14 | 37 | 10 | 1 | 2 | — | — | 3 | 1 | — | — | — | — | 1 |
Temp °C | 25 | 28 | 28 | 24 | 23 | 23 | 24 | 25 | 23 | 23 | 24 | 24 | 24 | 26 | 27 | 23 | 24 | 24 | 24 | 24 | 24 |
Feels °C | 26 | 28 | 28 | 25 | 25 | 25 | 25 | 28 | 24 | 24 | 28 | 27 | 27 | 29 | 29 | 23 | 26 | 26 | 23 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | SE 10 | SE 9 | SE 9 | SE 8 | ESE 8 | S 5 | SSE 5 | ENE 5 | SSE 4 | SSE 5 | ESE 8 | SSE 4 | SSE 5 | E 7 | S 6 | SSE 6 | ENE 4 | SE 11 | SE 11 | ENE 4 | NE 4 |
| kJ | 34 | 22 | 12 | 11 | 7 | 11 | 9 | 8 | 4 | 10 | 6 | 6 | 11 | 4 | 18 | 12 | 6 | 19 | 18 | 1 | 1 |
Swell 2 Height (m) Direction Period (s) | — | — | — | SE 4 | E 7 | ESE 8 | ESE 8 | SSE 5 | E 4 | ESE 8 | E 5 | ESE 8 | E 8 | SE 12 | ESE 12 | SE 12 | SSE 6 | SSE 6 | S 6 | SE 11 | ENE 4 |
| kJ | — | — | — | 1 | 1 | 7 | 7 | 5 | 3 | 7 | 2 | 6 | 4 | 6 | 14 | 22 | 6 | 6 | 3 | 18 | 1 |
Swell 3 Height (m) Direction Period (s) | — | NE 4 | — | — | — | SE 8 | E 15 | ESE 9 | ESE 9 | E 5 | SE 13 | E 5 | SE 12 | SE 8 | E 7 | E 7 | SE 12 | ENE 4 | SE 5 | S 6 | E 6 |
| kJ | — | 1 | — | — | — | 18 | 4 | 8 | 7 | 2 | 7 | 2 | 6 | 3 | 4 | 1 | 21 | 2 | 1 | 3 | 1 |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | — | S 4 | NE 4 | NE 4 | — | — | — | SSE 5 | — | — | SSE 5 | — | NE 3 | — | — | — | SE 3 | SE 4 |
| kJ | — | — | 1 | — | 7 | 4 | 14 | — | — | — | 4 | — | — | 9 | — | 2 | — | — | — | 2 | 18 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 32 | 548 | 169 | 210 | 548 | 2 | 85 | 2268 | 153 | 85 | 42 | 74 | 85 | 65 | 30 | 98 | 323 | 98 | 289 | 325 | 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.
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