Surf Forecasts:
Diamond Beach surf forecast from 30 Jul 2026:
- Most powerful swell: Thursday 6 Aug, 8PM (local time) - 4ft (1.2m), 5s period, S swell with 67 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 1.2m 5s and forecast to arrive on Thursday (Aug 06) at 8PM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.3m 3s period and expected on Thursday (Jul 30) at 5PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Thu 6th Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
G’day, I’m Rusty. Let’s talk about what’s cooking at Diamond Beach.
Look, I’m gonna be straight with you – the next couple of weeks are a total write-off for any sort of decent surf around here. We’ve got a long, flat, and messy run ahead. The first session that’s even worth looking at doesn’t show up until Sunday the 9th of August, and even then, it’s pretty weak.
From now right through until Saturday the 8th of August, the swell is tiny – barely 1ft – and mostly from the SSE or S. The wind is junk, almost always cross-onshore or onshore, and it’s often howling. The combined energy is in the weak range, barely hitting triple digits once on Monday the 3rd of August afternoon, with a reading of 100, but that comes with a strong breeze and messy conditions. You’d be better off looking for something else to do.
Then finally, on Sunday the 9th of August, we get a little glimmer. The morning shows a clean, moderate offshore wind from the NW, with the swell at 1ft from the SE. The combined energy is still weak at 26, but the wind is going offshore at 12 mph, which will keep it clean. It’s not big, but for a beginner or someone on a log, it might be a fun little window. The afternoon stays similar – offshore, 1ft from the S – but the energy drops a bit to 22.
After that, it’s back to small, onshore junk through to the end of the forecast. The 12th and 13th of August see some cleaner conditions with light cross-offshore and offshore winds, but the swell is tiny – 1ft to 2ft – and combined energy is still weak (up to 42 on the 12th afternoon). You’d be scratching for anything rideable.
As for the water temperature, when we finally get a surf on the 9th of August, the water temp is around 75°, which is about normal for the time of year – no real anomaly to talk about.
So, the standout? If you’re desperate, Sunday the 9th of August is your day. The NW offshore wind will have it looking clean, even if the swell is small. Don’t expect much else. The break can be inconsistent, and with crowds possible, it might still be a quiet one given the lack of size.
Rusty.
Short Range ForecastSome drizzle, heaviest during Fri morning. Warm (max 26°C on Sat afternoon, min 22°C on Thu night). Wind will be generally light. | Days 5-7 Weather SummaryHeavy rain (total 37mm), heaviest during Wed morning. Warm (max 27°C on Mon afternoon, min 22°C on Wed morning). Winds increasing (light winds from the S on Mon night, strong winds from the S by Wed morning). | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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 8 | SSE 8 | SSE 8 | SSE 8 | SE 9 | SSE 8 | SSE 7 | S 4 | S 4 | SE 8 | SE 7 | SSE 7 | SE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SE 7 | ESE 7 | SSE 6 |
Wave Graph  | ||||||||||||||||||||
 kJ | 23 | 23 | 26 | 25 | 21 | 13 | 19 | 20 | 12 | 17 | 7 | 41 | 49 | 59 | 18 | 15 | 7 | 7 | 27 | 11 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | glassy | cross-off | cross-on | cross | cross-on | cross-on | cross-on | cross-on | on | cross | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on | cross-on |
High Tide | 9:47PM1.57m | 10:15AM1.34m | 10:22PM1.54m | 10:52AM1.37m | 10:58PM1.49m | 11:30AM1.40m | 11:39PM1.44m | 12:12PM1.43m | 00:25AM1.38m | 12:58PM1.47m | 1:17AM1.31m | 1:49PM1.50m | 2:14AM1.26m | |||||||
Low Tide | 3:23PM0.14m | 3:58AM-0.00m | 4:03PM0.14m | 4:33AM-0.01m | 4:42PM0.15m | 5:05AM-0.00m | 5:20PM0.17m | 5:38AM0.02m | 6:03PM0.20m | 6:13AM0.05m | 6:53PM0.23m | 6:57AM0.10m | 8:00PM0.27m | |||||||
 |  |  |  |  | | | | | |  | | |  | |  | |  | | | |
 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:03 | — | — |
 | 8:13 | — | — | 8:12 | — | — | 8:10 | — | — | 8:09 | — | — | 8:08 | — | — | 8:07 | — | — | 8:06 | — |
mm | — | — | 1 | — | — | — | — | — | — | — | 7 | 3 | 1 | 8 | 1 | 2 | 6 | 9 | 4 | 4 |
Temp °C | 25 | 22 | 23 | 25 | 24 | 25 | 26 | 25 | 24 | 25 | 26 | 26 | 27 | 26 | 25 | 23 | 25 | 23 | 23 | 25 |
Feels °C | 22 | 22 | 25 | 26 | 23 | 26 | 25 | 24 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 23 | 24 | 24 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | SSE 8 | SSE 8 | SSE 8 | ENE 6 | SE 9 | SSE 8 | SE 8 | SE 8 | SSE 6 | SE 8 | S 4 | SSE 7 | SE 7 | SSE 7 | SSE 7 | SSE 7 | SE 7 | SSE 6 | SSE 6 | SSE 6 |
| kJ | 23 | 23 | 26 | 3 | 21 | 13 | 3 | 10 | 4 | 17 | 7 | 41 | 49 | 59 | 18 | 15 | 7 | 7 | 7 | 11 |
Swell 2 Height (m) Direction Period (s) | E 7 | ENE 5 | ENE 5 | NE 6 | ENE 6 | S 4 | E 6 | E 6 | SE 8 | SSE 8 | SE 7 | E 6 | E 9 | E 8 | ESE 8 | SE 8 | S 6 | SE 7 | SE 8 | SE 7 |
| kJ | 4 | 5 | 5 | 9 | 4 | 2 | 1 | 1 | 3 | 6 | 7 | 1 | 2 | 1 | 6 | 3 | 3 | 7 | 3 | 8 |
Swell 3 Height (m) Direction Period (s) | ENE 6 | — | — | SE 9 | ESE 9 | SE 9 | ENE 6 | — | S 8 | SSE 6 | SE 9 | — | — | — | — | — | E 8 | E 8 | E 8 | ESE 7 |
| kJ | 3 | — | — | 3 | 7 | 3 | 3 | — | 1 | 4 | 3 | — | — | — | — | — | 1 | 1 | 1 | 4 |
Wind waves Height (m) Direction Period (s) | WNW 3 | — | — | SSE 8 | S 3 | — | SSE 7 | S 4 | S 4 | SSE 4 | WSW 3 | — | SSE 7 | WSW 3 | ENE 3 | ENE 4 | ESE 4 | E 4 | ESE 7 | ESE 4 |
| kJ | 2 | — | — | 25 | 6 | — | 19 | 20 | 12 | 10 | 2 | — | 49 | 2 | 7 | 11 | 5 | 3 | 27 | 6 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 201 | 65 | 102 | 372 | 85 | 346 | 1135 | 553 | 1166 | 1183 | 553 | 1174 | 1132 | 50 | 346 | 1132 | 1135 | 1009 | 3073 | 1058 |
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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