Surf Forecasts:
Diamond Beach surf forecast from 31 Aug 2026:
- Best quality surf: Thursday 3 Sep, 2AM (local time) - 3.5ft (1.0m), 9s period, ESE swell with cross-offshore winds.
- Most powerful swell: Sunday 6 Sep, 8PM (local time) - 5.5ft (1.7m), 9s period, ENE swell with 416 kJ wave energy.
- Next surfable swell (1★+): Wednesday 2 Sep, 2AM (local time) - 1.5ft (0.4m), 12s 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 Wednesday (Sep 02) at 2AM. The primary swell is predicted to be 0.4m and 12s period with a secondary swell of 0.5m and 4s. 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 1.7m 9s and forecast to arrive on Sunday (Sep 06) at 8PM. Winds are predicted to be onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.6m 3s period and expected on Saturday (Sep 05) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 2nd Sep) | 1.5ft (0.4m) 12s |
| Best Surf | 2AM (Thu 3rd Sep) | 3.5ft (1.0m) 9s |
| Most Powerful | 8PM (Sun 6th Sep) | 5.5ft (1.7m) 9s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Right, grab a coffee, let’s see what’s happening at Diamond Beach. To be straight with you, this 16-day window is a tough one. The water’s a toasty 77°F, which is much warmer than usual for this time of year – feels like a bath. But the surf? It’s flat, mate. Really flat. There’s a long gap right at the start with no real surf to speak of, and it stretches all the way until the morning of Monday the 7th of September. That’s a solid week of nothing much.
From Monday the 7th, things barely tick over. On Monday morning, we get a tiny 1.0ft swell from the SE with a 9-second period. The combined energy is weak (76), and with a light cross-offshore wind, it’s clean but tiny. The waves are surfable but very ordinary. That afternoon, the wind swings onshore and bumps it up, so it’s not great.
The next glimmer is on Friday the 11th of September. That afternoon, we see a 4ft swell from the S, but with a period of only 5 seconds. Weak energy (54) and it’s a short-period wind swell, sloppy. The wind is light offshore, so it’s clean, but the waves are just not there.
The best chance in this whole outlook is early on Saturday the 12th of September. The morning shows a 3ft swell from the S, with a 6-second period, and a moderate offshore wind from the WNW. The combined energy is still weak (63), and it’s clean and surfable. It’s the only time the score bumps up to a 1, meaning it’s surfable but very ordinary. This is a beginner spot, so the tiny size is fine, but don’t expect any power.
Honestly, for the next 16 days, Diamond Beach is a write-off for anything decent. The swell is too small, the periods are too short, and the energy is weak. It’s a beach break, and with this lack of push, it’s more of a paddle than a surf. Keep your eye on the long-range, but for now, leave the board at home.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Wed night. Warm (max 31°C on Tue night, min 22°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Thu night. Warm (max 32°C on Thu night, min 20°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
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 8 | SE 8 | SE 7 | SE 7 | SE 7 | SE 12 | SE 11 | SE 10 | ESE 9 | SE 9 | SE 9 | ESE 8 | SSE 6 | SE 8 | E 7 | ESE 8 | E 7 | ENE 5 | ENE 6 | E 8 | E 9 |
Wave Graph  | |||||||||||||||||||||
 kJ | 10 | 9 | 8 | 7 | 7 | 52 | 73 | 48 | 185 | 30 | 79 | 27 | 11 | 10 | 9 | 6 | 4 | 33 | 66 | 124 | 102 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | on | cross-off | cross-off | cross-on | cross-off | cross | cross | cross-off | cross-off | cross | glassy | off | off | cross-off | cross-off | cross | cross-on | cross | cross-on | cross-on |
High Tide | 10:57AM1.56m | 11:17PM1.44m | 11:40AM1.57m | 00:06AM1.37m | 12:30PM1.56m | 1:03AM1.30m | 1:27PM1.54m | 2:05AM1.24m | 2:29PM1.52m | 3:11AM1.21m | 3:36PM1.52m | 4:21AM1.23m | 4:46PM1.54m | ||||||||
Low Tide | 5:04PM0.08m | 5:09AM0.01m | 5:48PM0.12m | 5:48AM0.06m | 6:40PM0.18m | 6:35AM0.13m | 7:46PM0.24m | 7:37AM0.20m | 9:04PM0.25m | 8:57AM0.23m | 10:17PM0.20m | 10:14AM0.20m | 11:20PM0.12m | ||||||||
 | |  |  | |  |  | | | | | | | | | |  | | | |  | |
 | 6:26 | — | — | 6:26 | — | — | 6:28 | — | — | 6:28 | — | — | 6:30 | — | — | 6:31 | — | — | 6:31 | — | — |
 | — | 7:31 | — | — | 7:30 | — | — | 7:28 | — | — | 7:27 | — | — | 7:24 | — | — | 7:23 | — | — | 7:22 | — |
mm | 2 | 2 | 4 | — | — | 1 | — | — | 9 | 1 | — | 7 | — | — | 2 | — | — | 1 | — | — | — |
Temp °C | 24 | 26 | 26 | 26 | 30 | 31 | 23 | 24 | 24 | 24 | 31 | 32 | 26 | 30 | 27 | 23 | 24 | 21 | 21 | 22 | 22 |
Feels °C | 27 | 29 | 27 | 29 | 31 | 32 | 23 | 26 | 27 | 27 | 34 | 33 | 28 | 30 | 28 | 20 | 23 | 18 | 17 | 18 | 21 |
Swell 1 Height (m) Direction Period (s) | SSE 4 | SE 8 | SE 7 | SE 7 | SE 7 | S 4 | SE 11 | SE 10 | E 6 | ESE 6 | SE 9 | S 4 | SSE 6 | S 6 | E 7 | NE 4 | S 6 | S 6 | SE 9 | SE 9 | E 9 |
| kJ | 3 | 9 | 8 | 7 | 7 | 9 | 73 | 48 | 116 | 30 | 79 | 9 | 11 | 6 | 9 | 3 | 3 | 1 | 3 | 3 | 102 |
Swell 2 Height (m) Direction Period (s) | SE 8 | S 4 | — | S 4 | SE 8 | SE 12 | S 5 | S 5 | SE 9 | SE 9 | SE 9 | ESE 8 | E 7 | E 7 | ESE 8 | E 7 | E 7 | SE 9 | S 6 | — | SE 9 |
| kJ | 10 | 1 | — | 2 | 3 | 52 | 4 | 2 | 70 | 28 | 37 | 27 | 9 | 9 | 7 | 4 | 4 | 3 | 1 | — | 3 |
Swell 3 Height (m) Direction Period (s) | — | — | — | — | SE 13 | — | NE 7 | — | — | — | NE 6 | E 6 | SE 8 | SE 8 | S 6 | ESE 8 | SE 8 | — | — | — | — |
| kJ | — | — | — | — | 7 | — | 2 | — | — | — | 9 | 10 | 11 | 10 | 2 | 6 | 2 | — | — | — | — |
Wind waves Height (m) Direction Period (s) | — | — | SSW 3 | — | S 3 | — | ENE 4 | ENE 6 | ESE 9 | — | SSW 3 | WNW 3 | WNW 2 | NW 3 | N 3 | NW 3 | NW 3 | ENE 5 | ENE 6 | E 8 | — |
| kJ | — | — | 7 | — | 2 | — | 7 | 40 | 185 | — | 3 | 1 | 1 | 2 | 5 | 6 | 1 | 33 | 66 | 124 | — |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1158 | 1001 | 376 | 376 | 85 | 0 | 299 | 3 | 0 | 2 | 7 | 2 | 30 | 85 | 257 | 502 | 497 | 125 | 8 | 497 | 19 |
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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