Surf Forecasts:
Diamond Beach surf forecast from 14 Sep 2026:
- Best quality surf: Monday 14 Sep, 2AM (local time) - 2ft (0.6m), 9s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 21 Sep, 2AM (local time) - 4.5ft (1.3m), 5s period, ENE swell with 97 kJ wave energy.
- Next surfable swell (1★+): Monday 14 Sep, 2AM (local time) - 2ft (0.6m), 9s period with SE 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 Monday (Sep 14) at 2AM. The primary swell is predicted to be 0.6m and 9s period with a secondary swell of 0.5m and 9s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Diamond Beach in the next 16 days are 1.3m 5s and forecast to arrive on Monday (Sep 21) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.8m 4s period and expected on Monday (Sep 14) at 11PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Mon 14th Sep) | 2ft (0.6m) 9s |
| Best Surf | 2AM (Mon 14th Sep) | 2ft (0.6m) 9s |
| Most Powerful | 2AM (Mon 21st Sep) | 4.5ft (1.3m) 5s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Hey, Rusty here. Let's take a look at Diamond Beach for the next couple of weeks.
To be honest, it's looking pretty grim for a while. There's almost no surf on offer for over a week. The first time you might see something worth paddling out for isn't until Saturday, September 26th. Until then, it's a whole lot of flatness.
The first week and a half is all junk. Tiny swells, nothing over 2 ft, and the wind is all wrong – mostly cross-onshore or onshore, making a mess of everything. The wave energy is pitiful, with values under 40 (33 to 38). There's a bump on Monday the 21st with a 5 ft swell from the east, but it's getting hammered by a 15 mph cross-shore wind, so it'll be a choppy, blown-out mess. The energy jumps to 263, but the wind ruins it. The days after that have a bit more groundswell, with periods up to 10 seconds on the 25th, but the swell is still tiny and the winds are strong, even if they are offshore.
Saturday the 26th of September is the only day that gets a slight nod. The morning looks best. We're looking at a clean 2 ft easterly swell, a 9-second period, and a nice 15 mph offshore wind from the northwest. The water's been much warmer than usual for this time of year. The combined wave energy is still weak at 65, but the offshore wind will keep it glassy. For a beginner spot like Diamond Beach, that's about as good as it gets when it's this flat. You'll get a few little peelers. The crowds are "sometimes," so you might see a few others out.
So, the bottom line is the surf is mostly gone. That one small window on the 26th is your best bet if you're itching to get wet, but don't expect much. It's a long stretch of nothing after that, so maybe use the time to tune up your gear. The forecast could always change.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Sun night, min 19°C on Mon night). Wind will be generally light. | Days 5-7 Weather SummaryMostly dry. Warm (max 22°C on Thu afternoon, min 20°C on Wed night). Wind will be generally light. | ||||||||||||||||||
Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | ||||||||||||||
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 9 | SE 9 | NE 4 | ENE 5 | E 6 | E 6 | E 6 | E 6 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 12 | E 6 | ESE 8 | S 4 |
Wave Graph  | |||||||||||||||||||
 kJ | 53 | 29 | 13 | 13 | 24 | 28 | 9 | 11 | 10 | 20 | 21 | 20 | 16 | 15 | 9 | 14 | 6 | 14 | 28 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | off | cross | cross-on | cross-on | on | on | on | cross-on | cross-on | cross-on | cross-off | cross | cross-on | cross-on | on | on | cross-on |
High Tide | 10:45PM1.49m | 11:15AM1.60m | 11:30PM1.39m | 11:59AM1.53m | 00:18AM1.28m | 12:45PM1.46m | 1:07AM1.19m | 1:33PM1.39m | 1:59AM1.12m | 2:23PM1.34m | 2:53AM1.08m | 3:16PM1.31m | 3:49AM1.07m | ||||||
Low Tide | 4:39AM-0.01m | 5:08PM0.07m | 5:16AM0.09m | 5:51PM0.16m | 5:52AM0.20m | 6:36PM0.25m | 6:31AM0.30m | 7:28PM0.34m | 7:19AM0.38m | 8:33PM0.38m | 8:27AM0.43m | 9:39PM0.38m | |||||||
 |  |  |  | | | | | | | | |  |  | | | | |  | |
 | — | 6:39 | — | — | 6:39 | — | — | 6:41 | — | — | 6:41 | — | — | 6:43 | — | — | 6:43 | — | — |
 | 7:10 | — | 7:09 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:02 | — | — | 7:00 | — |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 26 | 22 | 24 | 22 | 21 | 21 | 20 | 20 | 20 | 21 | 21 | 22 | 22 | 22 | 21 | 21 | 21 | 22 | 24 |
Feels °C | 28 | 18 | 18 | 17 | 18 | 19 | 19 | 21 | 20 | 20 | 21 | 20 | 20 | 22 | 20 | 20 | 21 | 22 | 24 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | ESE 9 | E 6 | E 6 | E 6 | E 6 | ESE 8 | ESE 8 | ESE 8 | ESE 7 | ESE 7 | ESE 7 | ESE 6 | E 6 | ESE 8 | ESE 11 |
| kJ | 53 | 29 | 13 | 12 | 8 | 28 | 9 | 9 | 10 | 20 | 21 | 20 | 16 | 15 | 9 | 8 | 6 | 14 | 24 |
Swell 2 Height (m) Direction Period (s) | SE 9 | — | NE 4 | S 6 | SE 6 | SE 9 | E 7 | ESE 8 | E 8 | SE 13 | SE 13 | SE 12 | SE 12 | SE 12 | SE 12 | ESE 12 | SE 12 | SE 12 | E 7 |
| kJ | 41 | — | 3 | 1 | 2 | 3 | 4 | 11 | 5 | 7 | 7 | 6 | 6 | 6 | 6 | 14 | 5 | 5 | 4 |
Swell 3 Height (m) Direction Period (s) | ESE 5 | ESE 5 | SSE 6 | E 15 | E 15 | SE 6 | SE 9 | SE 14 | SE 13 | ESE 13 | — | — | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | — | — |
| kJ | 2 | 2 | 3 | 4 | 4 | 2 | 3 | 7 | 7 | 17 | — | — | 3 | 3 | 3 | 3 | 3 | — | — |
Wind waves Height (m) Direction Period (s) | — | N 4 | NNW 3 | NE 4 | ENE 5 | — | — | — | — | SSE 3 | — | SSE 3 | S 3 | — | — | — | — | SSE 2 | S 4 |
| kJ | — | 9 | 4 | 13 | 24 | — | — | — | — | 1 | — | 2 | 6 | — | — | — | — | 1 | 28 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 32 | 0 | 422 | 289 | 564 | 734 | 734 | 502 | 641 | 1166 | 502 | 50 | 556 | 42 | 502 | 1135 | 1009 | 337 | 1174 |
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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