Surf Forecasts:
Diamond Beach surf forecast from 21 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 8PM (local time) - 6ft (1.9m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 22 Jul, 8PM (local time) - 6ft (1.9m), 8s period, S swell with 477 kJ wave energy.
- Next surfable swell (1★+): Tuesday 21 Jul, 8PM (local time) - 5ft (1.6m), 6s period with S 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 Tuesday (Jul 21) at 8PM. The primary swell is predicted to be 1.6m and 6s period with a secondary swell of 0.1m and 12s. 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 1.9m 8s and forecast to arrive on Wednesday (Jul 22) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Thursday (Jul 23) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Tue 21st Jul) | 5ft (1.6m) 6s |
| Best Surf | 8PM (Wed 22nd Jul) | 6ft (1.9m) 8s |
| Most Powerful | 8PM (Wed 22nd Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here with a look at what's coming our way. We're checking out Diamond Beach for the next couple of weeks, and I gotta be straight with you – it's a tough stretch. The swell window just isn't cooperating, and the winds are making a mess of things most days.
We start off with a few days of real low-quality energy kicking around. Tuesday the 21st, we've got a weak SSE swell pushing in at about 3 ft with a short, crumbly 5-second period. The combined energy is a measly 36 (weak), and a cross-onshore breeze is going to chop it up. Not worth paddling out for. Wednesday the 22nd shows a little more promise with the swell picking up slightly and the period stretching to 8 seconds, giving a moderate combined energy of 161. We get some cleaner conditions with cross-offshore winds in the morning. Still, the swell height is only around 4 ft from the south, and it’s not what you'd call firing. Thursday the 23rd through the weekend looks similar – small, weak swells from the east or southeast with periods of 4 to 8 seconds, and mostly cross or onshore winds. It's just one of those runs where the ocean is giving us nothing to work with.
From Monday the 28th through the beginning of August, things don't really change. We're stuck with tiny waves, usually under 3 ft, and the wind is mostly cross or cross-on. The end of the month and start of August do offer some glassy mornings, like on Monday the 3rd and Tuesday the 4th, but the swell is just too weak to ride, with heights of only 2 ft to 2 ft. There's simply no standout session here.
The one bright spot, if you can call it that, is Wednesday morning on the 29th of July. We'll have a fresh offshore wind from the WNW, giving us clean conditions. But the swell is only 2 ft from the SSE with an 8-second period, and the combined energy is just 60 (weak). It's a *maybe* for a longboard if you're desperate for a paddle, but it's not a real surf.
Overall, this is a proper blank run for Diamond Beach. The energy is mostly weak (values between 19 and 161) and the swell direction never lines up well with the optimum. It’s a beginner-friendly spot normally, but there's just nothing to ride here for the foreseeable future. Keep the board in the bag and wait it out.
- Rusty
Short Range ForecastHeavy rain (total 81mm), heaviest during Tue night. Warm (max 28°C on Tue afternoon, min 19°C on Thu morning). Winds decreasing (fresh winds from the SSW on Tue afternoon, light winds from the ESE by Thu night). | Days 4-6 Weather SummaryMostly dry. Warm (max 23°C on Fri morning, min 19°C on Sat night). Wind will be generally light. | ||||||||||||||||||||
Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | Monday 27 | |||||||||||||||
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) | SSE 4 | S 6 | SSE 8 | S 8 | S 8 | SSE 8 | SSE 8 | ENE 5 | SE 8 | ENE 5 | E 6 | E 6 | ENE 5 | ENE 6 | SE 8 | SE 8 | SE 8 | S 4 | SE 8 | SE 8 | SSW 4 |
Wave Graph  | |||||||||||||||||||||
 kJ | 34 | 86 | 287 | 224 | 147 | 92 | 58 | 42 | 20 | 37 | 66 | 38 | 24 | 33 | 28 | 32 | 31 | 39 | 15 | 14 | 45 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross | cross | cross | cross-off | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 2:56PM1.44m | 3:07AM1.20m | 3:45PM1.42m | 4:00AM1.13m | 4:36PM1.41m | 4:57AM1.09m | 5:30PM1.41m | 5:56AM1.10m | 6:23PM1.44m | 6:51AM1.14m | 7:11PM1.49m | 7:39AM1.19m | 7:55PM1.53m | ||||||||
Low Tide | 8:10AM0.16m | 8:57PM0.30m | 9:03AM0.23m | 9:58PM0.31m | 9:58AM0.27m | 10:54PM0.29m | 10:49AM0.28m | 11:44PM0.25m | 11:38AM0.27m | 00:32AM0.20m | 12:26PM0.24m | 1:17AM0.15m | 1:12PM0.21m | 2:01AM0.10m | |||||||
 | |  |  | | | |  |  | | |  | | | | | | | | | | |
 | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — | 5:54 | — | — |
 | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:15 | — | — | 8:15 | — |
mm | 3 | 2 | 75 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 28 | 23 | 24 | 27 | 27 | 21 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 21 | 22 | 23 | 23 | 24 | 24 | 26 |
Feels °C | 26 | 26 | 25 | 22 | 27 | 27 | 19 | 22 | 21 | 20 | 20 | 19 | 19 | 18 | 19 | 22 | 23 | 21 | 23 | 22 | 26 |
Swell 1 Height (m) Direction Period (s) | SE 8 | E 12 | SSE 8 | — | S 8 | SSE 8 | SSE 8 | SSE 7 | SE 8 | SSE 6 | SE 8 | SE 8 | SE 7 | SE 7 | SE 8 | SE 8 | SE 8 | SE 8 | S 5 | S 5 | SE 8 |
| kJ | 3 | 3 | 287 | — | 147 | 92 | 58 | 18 | 20 | 8 | 11 | 29 | 19 | 19 | 28 | 32 | 31 | 15 | 11 | 8 | 14 |
Swell 2 Height (m) Direction Period (s) | — | — | NNW 3 | — | — | — | SE 8 | SE 8 | SSE 7 | SE 8 | S 6 | — | S 6 | — | ENE 6 | ENE 6 | ENE 5 | E 5 | SE 8 | SE 8 | — |
| kJ | — | — | 1 | — | — | — | 43 | 10 | 9 | 9 | 1 | — | 2 | — | 12 | 6 | 3 | 1 | 15 | 14 | — |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | — | — | — | — | — | — | — | — | — | — | SE 9 | — | — | — | — | — | — |
| kJ | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | — |
Wind waves Height (m) Direction Period (s) | SSE 4 | S 6 | SSE 8 | S 8 | W 3 | — | NE 5 | ENE 5 | E 5 | ENE 5 | E 6 | E 6 | ENE 5 | ENE 6 | — | — | S 3 | S 4 | WSW 4 | W 3 | SSW 4 |
| kJ | 34 | 86 | 178 | 224 | 1 | — | 22 | 42 | 13 | 37 | 66 | 38 | 24 | 33 | — | — | 2 | 39 | 4 | 2 | 45 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1135 | 1166 | 33 | 23 | 0 | 5 | 8 | 372 | 19 | 289 | 299 | 227 | 325 | 388 | 5 | 8 | 422 | 376 | 1009 | 548 | 553 |
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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