
Surf Forecasts:
Diamond Beach surf forecast from 17 Jul 2026:
- Most powerful swell: Sunday 19 Jul, 2AM (local time) - 5.5ft (1.7m), 7s period, S swell with 295 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 1.7m 7s and forecast to arrive on Sunday (Jul 19) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Thursday (Jul 23) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 19th Jul) | 5.5ft (1.7m) 7s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
G’day, Rusty here, and I’ve got to be straight with you – the outlook for Diamond Beach over the next 16 days is a tough one to write. We’re looking at a long, dry spell with barely a ripple worth paddling for. The first real chance of anything surfable doesn’t pop up until Saturday the 25th of July, and even then, it’s a fleeting moment.
For the first week and a half, from Friday the 17th through to Friday the 24th, it’s pretty much a write-off. Swell heights are tiny, mostly below 2 ft, and the wind is usually cross-onshore or choppy, making a mess of what little energy is there. The combined wave energy is weak, barely cracking 100 (7 to 131), and the conditions are called “poor” for each session. You’d be better off doing something else.
Then, on Saturday the 25th of July, we get a little glimmer. The morning brings a glassy session with a 4 ft swell from the east (6-second period) and a combined energy of 110 (moderate). The wind is glassy – dead calm – which is a major positive for clean conditions. The water temperature is about average for the time of year, so nothing wild there. But don’t get too excited. This is a beginner-friendly break and it’s inconsistent, so it rarely breaks, and the quality is only described as “surfable but very ordinary.” It’s a small window of clean, small surf, but the swell period is short, so the waves will be a bit weak and dumpy. The crowd is listed as “sometimes,” so you might have company, but with this lack of quality, it’s unlikely to be packed.
After that Saturday morning, it goes back to the same old story. The rest of the 16-day run is filled with tiny swells, cross-onshore winds, and combined energy dropping back under 100 (17 to 55). The afternoon of the 25th turns choppy with a 15 mph cross-onshore wind, and from Sunday the 26th through to Saturday the 1st of August, it’s all poor conditions again.
The standout here is that Saturday morning, the 25th of July, at Diamond Beach. It’s not a day to write home about, but if you’re desperate for a paddle, that glassy, 4 ft east swell is your best bet. The optimum swell direction for this spot is southeast, and this is coming from the east, so it’s a bit off-angle, but with glassy conditions, you might still find a few fun ones. Just manage your expectations – it’s small, inconsistent, and only for beginners.
No other breaks are recommended in this region, so that’s the whole story. It’s a lean stretch, but that’s the nature of this spot sometimes. Keep an eye on the forecasts – things can change.
Rusty.
Short Range ForecastHeavy rain (total 33mm), heaviest during Sat night. Warm (max 32°C on Thu night, min 24°C on Fri morning). Winds increasing (light winds from the SW on Thu night, strong winds from the S by Sat afternoon). | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Wed afternoon. Warm (max 27°C on Sun night, min 20°C on Sun night). Winds increasing (light winds from the SE on Mon night, strong winds from the SW by Tue night). | ||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | ||||||||||||||
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 5 | S 5 | SSE 5 | SSE 4 | S 5 | S 7 | S 7 | S 7 | SSE 8 | SSE 8 | SSE 7 | SSE 3 | SSE 4 | SSE 4 | S 6 | SSE 8 | SSE 8 | SSE 9 |
Wave Graph | |||||||||||||||||||
7 | 4 | 3 | 7 | 10 | 97 | 295 | 49 | 26 | 21 | 19 | 18 | 8 | 9 | 26 | 125 | 151 | 131 | 121 | |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-on | cross-on | cross-on | cross-on | cross-off | off | off | cross-off | cross-on | cross-on | on | cross-on | cross-on | cross | cross | off | cross-off |
High Tide | 10:52PM1.73m | 11:34AM1.53m | 11:45PM1.63m | 12:28PM1.52m | 00:36AM1.52m | 1:19PM1.50m | 1:27AM1.40m | 2:08PM1.48m | 2:17AM1.29m | 2:56PM1.44m | 3:07AM1.20m | 3:45PM1.42m | 4:00AM1.13m | ||||||
Low Tide | 5:04AM-0.19m | 5:13PM-0.01m | 5:49AM-0.12m | 6:04PM0.07m | 6:34AM-0.04m | 6:56PM0.17m | 7:20AM0.06m | 7:54PM0.25m | 8:10AM0.16m | 8:57PM0.30m | 9:03AM0.23m | 9:58PM0.31m | |||||||
— | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | |
8:22 | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | |
mm | — | — | — | — | 2 | 3 | 28 | — | — | — | — | — | — | 1 | — | — | 2 | 4 | — |
Temp °C | 32 | 26 | 28 | 26 | 25 | 27 | 26 | 25 | 28 | 27 | 23 | 23 | 24 | 25 | 25 | 27 | 26 | 27 | 24 |
Feels °C | 36 | 26 | 28 | 25 | 25 | 26 | 27 | 25 | 26 | 25 | 21 | 20 | 24 | 26 | 25 | 24 | 25 | 23 | 20 |
Swell 1 Height (m) Direction Period (s) | SSE 5 | S 5 | S 5 | SE 8 | ESE 8 | SE 13 | S 7 | S 7 | S 7 | SSE 8 | SSE 8 | SSE 7 | ENE 4 | SE 8 | — | S 6 | SSE 8 | SSE 8 | SSE 9 |
7 | 4 | 2 | 3 | 7 | 7 | 117 | 49 | 26 | 21 | 19 | 18 | 2 | 2 | — | 62 | 151 | 131 | 121 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | SE 8 | ENE 3 | — | SE 14 | E 9 | SE 13 | E 13 | E 13 | E 12 | SE 12 | E 12 | SE 8 | — | — | — | — | — | — |
3 | 3 | 1 | — | 7 | 2 | 7 | 3 | 3 | 3 | 6 | 3 | 3 | — | — | — | — | — | — | |
Swell 3 Height (m) Direction Period (s) | — | — | SE 8 | E 14 | — | E 9 | — | — | — | — | — | SE 8 | SE 12 | SE 12 | — | — | — | — | — |
— | — | 3 | 4 | — | 2 | — | — | — | — | — | 3 | 6 | 6 | — | — | — | — | — | |
Wind waves Height (m) Direction Period (s) | — | NNE 3 | — | SSE 5 | SSE 4 | S 5 | S 7 | WNW 3 | NW 3 | N 3 | ENE 4 | ENE 4 | SSE 3 | SSE 4 | SSE 4 | S 6 | WSW 3 | WNW 3 | N 3 |
— | 1 | — | 7 | 10 | 97 | 295 | 2 | 2 | 4 | 7 | 3 | 8 | 9 | 26 | 125 | 3 | 7 | 7 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1001 | 1009 | 1001 | 1009 | 1009 | 1183 | 29 | 2 | 30 | 160 | 199 | 372 | 372 | 1166 | 1166 | 1121 | 156 | 29 | 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.










