Surf Forecasts:
Diamond Beach surf forecast from 17 Jul 2026:
- Best quality surf: Saturday 18 Jul, 8PM (local time) - 4ft (1.2m), 6s period, S swell with glassy winds.
- Most powerful swell: Wednesday 22 Jul, 11AM (local time) - 7ft (2.2m), 8s period, S swell with 638 kJ wave energy.
- Next surfable swell (1★+): Saturday 18 Jul, 8PM (local time) - 4ft (1.2m), 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 Saturday (Jul 18) at 8PM. The primary swell is predicted to be 1.2m and 6s period with a secondary swell of 0.1m and 13s. Another secondary swell of 0.1m and 9s 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 2.2m 8s and forecast to arrive on Wednesday (Jul 22) at 11AM. 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 Wednesday (Jul 22) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Sat 18th Jul) | 4ft (1.2m) 6s |
| Best Surf | 8PM (Sat 18th Jul) | 4ft (1.2m) 6s |
| Most Powerful | 11AM (Wed 22nd Jul) | 7ft (2.2m) 8s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s be straight with you about Diamond Beach. We’ve got a long 16-day window ahead, but honestly, I’m looking at a whole lot of nothing for a long stretch. The first real chance of anything worth paddling out for doesn’t show up until Wednesday, 22 July, and even then it’s a rough one.
The first week is pretty grim. From Friday, 17 July through to Tuesday, 21 July, the surf is tiny and weak – we’re talking knee-high slop at best, with a combined swell energy barely cracking 100 (4 to 95). Winds are mostly cross-onshore or choppy, and the general vibe is “poor surf conditions.” Not a single session worth your time. You’d be better off cleaning the wax off your board.
Then comes Wednesday, 22 July morning. This is the only thing that even blips on the radar. Diamond Beach is exposed to the swell, and overnight we get a pulse of 7ft S swell with an 8-second period. The combined energy jumps to 843 (moderate wave energy). The wind is cross-offshore from the WNW at 22 mph, so it’ll be clean. But listen – 7ft is a fair chunk of water, and with that short period, it’s going to be a lumpy, powerful mess. This is for experienced surfers only. Beginners, stay on the sand. The swell direction is S, which is off the optimum SE direction, so it’s not hitting the bank perfectly. The break is inconsistent, so don’t expect a set every minute. It’s a bit of a gamble, but it’s the only game in town.
After that, the surf drops back to nothing. Thursday, 23 July through to Saturday, 1 August, we’re back to tiny, weak waves (1ft to 3ft, energy under 100) and mostly poor conditions. A few mornings have offshore winds (like the 23rd and 24th), but there’s just no swell to work with. The water temp is a touch warmer than normal at 75°, which is a nice little bonus for the time of year, but it won’t help the waves.
So here’s the deal: if you’re an expert and you’re desperate, Wednesday, 22 July morning is your only shot. It’s not a standout, it’s just the only option. For everyone else, this stretch is a write-off. It’s a long gap with no real recommendations, but that’s Diamond Beach for you – it tends to go quiet like this. Forecasts can change, but as it stands, I’d save the gas.
Rusty.
Short Range ForecastHeavy rain (total 55mm), heaviest during Sat night. Warm (max 29°C on Fri afternoon, min 22°C on Sat night). Winds increasing (calm on Fri morning, fresh winds from the S by Sat afternoon). | Days 4-6 Weather SummaryModerate rain (total 10mm), heaviest on Tue night. Warm (max 29°C on Tue afternoon, min 19°C on Wed night). Winds increasing (light winds from the NE on Mon morning, strong winds from the SSW by Tue night). | ||||||||||||||||||||
Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | |||||||||||||||
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) | S 4 | SSE 4 | E 14 | S 3 | S 5 | S 7 | S 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SE 4 | S 6 | SE 4 | S 7 | S 8 | SSE 8 | SSE 9 | SSE 8 | SE 8 | SE 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 3 | 4 | 4 | 7 | 83 | 153 | 44 | 22 | 29 | 16 | 18 | 13 | 14 | 32 | 278 | 638 | 122 | 121 | 58 | 24 | 23 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross | cross | cross-on | cross-on | cross | off | off | on | cross-on | cross-on | on | cross-on | cross-on | cross-off | cross-off | off | off | off | cross-off | cross |
High Tide | 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 | 4:36PM1.41m | 4:57AM1.09m | |||||||
Low Tide | 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 | 9:58AM0.27m | 10:54PM0.29m | ||||||||
 | |  |  |  |  | | |  |  | | | | |  | | | | | | | |
 | 5:47 | — | — | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — |
 | — | 8:22 | — | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — |
mm | — | — | — | 1 | 2 | 51 | 1 | — | — | — | — | — | 1 | 1 | 7 | 1 | — | — | — | — | — |
Temp °C | 26 | 29 | 28 | 27 | 28 | 24 | 25 | 28 | 27 | 24 | 24 | 24 | 25 | 29 | 28 | 26 | 26 | 24 | 20 | 25 | 25 |
Feels °C | 27 | 28 | 27 | 29 | 26 | 25 | 25 | 26 | 26 | 23 | 22 | 23 | 26 | 28 | 27 | 25 | 21 | 20 | 17 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | S 4 | SE 8 | SE 8 | SE 8 | SE 8 | SSE 7 | S 7 | S 7 | SSE 7 | SSE 7 | E 12 | SE 8 | S 6 | E 12 | S 6 | S 8 | SSE 8 | SSE 9 | SSE 8 | SE 8 | SE 7 |
| kJ | 1 | 3 | 3 | 3 | 3 | 77 | 44 | 22 | 29 | 16 | 3 | 3 | 12 | 3 | 132 | 205 | 122 | 121 | 58 | 24 | 23 |
Swell 2 Height (m) Direction Period (s) | SE 8 | — | E 14 | SE 14 | SE 13 | SE 13 | SE 13 | E 13 | E 12 | E 12 | SE 12 | — | SE 8 | E 9 | E 5 | — | — | — | NNW 3 | SSE 7 | S 7 |
| kJ | 3 | — | 4 | 7 | 7 | 7 | 7 | 3 | 3 | 3 | 6 | — | 2 | 2 | 2 | — | — | — | 1 | 18 | 4 |
Swell 3 Height (m) Direction Period (s) | — | — | E 9 | E 9 | E 9 | E 8 | — | SE 13 | — | — | E 9 | E 10 | SE 12 | — | — | — | — | — | — | — | S 9 |
| kJ | — | — | 2 | 2 | 2 | 1 | — | 7 | — | — | 2 | 2 | 6 | — | — | — | — | — | — | — | 2 |
Wind waves Height (m) Direction Period (s) | NNE 2 | SSE 4 | S 3 | S 3 | S 5 | S 7 | WNW 3 | WNW 3 | — | — | SSE 7 | SE 4 | SE 4 | SE 4 | S 7 | S 8 | WNW 3 | NW 3 | NNE 4 | — | — |
| kJ | 1 | 4 | 3 | 5 | 83 | 153 | 1 | 1 | — | — | 18 | 13 | 14 | 32 | 278 | 638 | 9 | 3 | 3 | — | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2487 | 1001 | 1009 | 1453 | 35 | 29 | 2 | 32 | 32 | 313 | 346 | 558 | 2331 | 391 | 23 | 509 | 23 | 0 | 2 | 2 | 28 |
Best forecast wave conditions in New Jersey | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)- Wind Speed (km/h)
FREE! Surf-Forecast.com widget for your website
The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Diamond Beach surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
Nearest