
Surf Forecasts:
Diamond Beach surf forecast from 8 Aug 2026:
- Most powerful swell: Sunday 9 Aug, 2AM (local time) - 3.5ft (1.1m), 6s period, S swell with 94 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 1.1m 6s and forecast to arrive on Sunday (Aug 09) 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 0.5m 3s period and expected on Sunday (Aug 09) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Sun 9th Aug) | 3.5ft (1.1m) 6s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, listen up. Rusty here, and I’ve been staring at the charts for this little patch we call Diamond Beach. The next 16 days are a mixed bag, and I've got to be straight with you—there's a lot of waiting around involved.
The first real chance of anything surfable doesn't show up until Saturday, the 22nd of August. Before that, we're looking at a solid stretch of nothing. From now until late August, the swell is tiny, period is short, and the energy is just pathetic. Early on, we get a few glassy mornings on the 10th and 13th, but with waves barely 1 ft, it's barely a ripple. A couple of days in the middle of the week have a bit more wind, but it's still on the small side and messy. Honestly, a lot of that time the water is flat and clean, but there's no power behind it. The water temp is sitting at a nice 76°, which is about normal for this time of year, so at least it's warm for the flat spells.
Everything changes around the 19th of August. A solid pulse of swell rolls in, but it’s a bit of a beast. Wednesday morning the 19th, we see the swell jump to 6 ft from the SE, but the wind is howling from the SSW at 16 mph, creating a cross-chop. The energy reading is moderate at 182. That afternoon, it gets even bigger, hitting 8 ft from the SE, but the wind is onshore and choppy. The combined energy jumps to a very strong 999. That’s expert territory only, and with the wind and rain, it’s not a pretty picture. The 20th is still large, with waves around 6 ft from the E, but the wind is onshore again, making it a messy, powerful ocean. The energy is strong at 503. This whole setup is more interesting for kite surfing than for a paddle surfer looking for a clean ride.
The standout window, and the only one I'd paddle out for, arrives on Friday, the 21st of August. The swell drops to a more manageable 3 ft from the E, with a period of 9 seconds. The wind is light from the S at 6 mph, only a light cross-onshore, and the energy is a moderate 174. It’s not perfect, but it’s the best we’ll see. Saturday the 22nd of August morning is also a treat—the swell is tiny at 2 ft, but the wind goes offshore from the NW at 12 mph. The waves will be clean, but very small. The afternoon of the 22nd is the only time the forecast calls it "surfable waves but very ordinary conditions," with a 1 out of 10 score. It’s a 1 ft swell from the SSE with a 9-second period and offshore wind. It’s not a classic, but it’s the only window that’s not completely written off.
So, to sum it up: if you’re an expert, you might want to look at the big, messy swell on the 19th and 20th, but be prepared for a battle. For the rest of us, the best bet is the small, clean-ish window on Friday the 21st and Saturday the 22nd. Don't go expecting a world-class session. The crowds are listed as "sometimes," so it might be a quiet one, but I wouldn't bank on it.
Keep your eyes on the sky, and check the forecast again close to the date. This is a long-range call, so it's a bit of a gamble. I'm Rusty, signing off.
Short Range ForecastSome drizzle, heaviest during Sat night. Warm (max 31°C on Sat afternoon, min 23°C on Sun morning). Winds decreasing (fresh winds from the WSW on Sat night, calm by Mon morning). | Days 4-6 Weather SummaryLight rain (total 4mm), mostly falling on Tue night. Warm (max 30°C on Tue night, min 23°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | |||||||||||||||
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 9 | SE 8 | S 6 | S 6 | SSE 6 | S 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 6 | SSE 5 | S 4 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | S 4 | SSE 4 | SSE 6 | SSE 7 |
Wave Graph | |||||||||||||||||||||
27 | 23 | 94 | 29 | 12 | 11 | 11 | 11 | 12 | 6 | 22 | 8 | 17 | 10 | 10 | 6 | 12 | 7 | 12 | 17 | 21 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross | cross-off | cross-off | cross-on | cross-off | glassy | cross-on | cross-off | cross | cross-on | cross-off | cross-off | cross-off | cross-off | glassy | cross-on | cross-on | cross-off | off | off |
High Tide | 4:56PM1.58m | 5:39AM1.25m | 6:05PM1.64m | 6:46AM1.34m | 7:08PM1.71m | 7:45AM1.44m | 8:03PM1.76m | 8:38AM1.52m | 8:53PM1.78m | 9:27AM1.58m | 9:41PM1.75m | 10:16AM1.61m | 10:29PM1.68m | ||||||||
Low Tide | 10:20AM0.15m | 11:33PM0.12m | 11:26AM0.09m | 00:31AM0.02m | 12:28PM0.03m | 1:26AM-0.07m | 1:26PM-0.03m | 2:18AM-0.14m | 2:22PM-0.08m | 3:07AM-0.18m | 3:14PM-0.09m | 3:53AM-0.19m | 4:04PM-0.07m | 4:35AM-0.16m | |||||||
6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | |
— | 8:02 | — | — | 8:01 | — | — | 8:00 | — | — | 7:59 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | |
mm | — | — | 1 | — | — | — | — | — | — | — | — | 3 | — | — | — | — | — | 1 | — | — | — |
Temp °C | 27 | 31 | 29 | 26 | 30 | 31 | 27 | 30 | 26 | 26 | 29 | 30 | 25 | 27 | 27 | 25 | 26 | 26 | 25 | 28 | 28 |
Feels °C | 28 | 32 | 29 | 28 | 31 | 32 | 30 | 31 | 26 | 28 | 30 | 30 | 24 | 28 | 28 | 28 | 28 | 27 | 25 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | S 5 | SE 8 | E 9 | S 6 | SSE 6 | S 5 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 6 | SSE 5 | SE 8 | SSE 6 | SSE 6 | ENE 4 | ENE 5 | SE 8 | SSE 4 | SSE 6 | SSE 7 |
13 | 23 | 1 | 29 | 12 | 11 | 11 | 11 | 12 | 6 | 6 | 8 | 3 | 10 | 10 | 4 | 2 | 3 | 12 | 17 | 21 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | E 8 | — | ESE 8 | ESE 7 | SE 7 | E 10 | SE 10 | SSW 3 | SE 9 | SE 9 | SE 9 | — | SE 8 | SE 8 | SSE 6 | ESE 8 | ENE 4 | SE 8 | SE 10 | — |
27 | 1 | — | 6 | 5 | 2 | 2 | 4 | 2 | 3 | 3 | 3 | — | 3 | 3 | 6 | 7 | 2 | 2 | 4 | — | |
Swell 3 Height (m) Direction Period (s) | E 9 | — | — | E 9 | E 9 | — | E 9 | E 8 | SE 10 | E 8 | E 8 | E 8 | — | E 11 | — | SE 8 | SE 10 | S 6 | SE 10 | E 13 | — |
2 | — | — | 2 | 2 | — | 2 | 1 | 4 | 1 | 1 | 1 | — | 2 | — | 3 | 4 | 3 | 4 | 3 | — | |
Wind waves Height (m) Direction Period (s) | W 3 | S 4 | S 6 | W 3 | — | — | — | — | — | — | S 6 | N 3 | S 4 | W 2 | — | — | SSE 6 | S 4 | WNW 3 | WNW 3 | NW 2 |
1 | 22 | 94 | 1 | — | — | — | — | — | — | 22 | 2 | 17 | 1 | — | — | 12 | 7 | 1 | 3 | 1 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2 | 28 | 10 | 32 | 64 | 230 | 1132 | 1009 | 42 | 289 | 2664 | 553 | 273 | 29 | 98 | 376 | 2393 | 671 | 553 | 3151 | 85 |
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.











