Surf Forecasts:
Diamond Beach surf forecast from 20 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 8PM (local time) - 4.5ft (1.4m), 8s period, S swell with cross-offshore winds.
- Most powerful swell: Wednesday 22 Jul, 2PM (local time) - 6ft (1.9m), 8s period, S swell with 453 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 8PM (local time) - 4.5ft (1.4m), 8s 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 Wednesday (Jul 22) at 8PM. The primary swell is predicted to be 1.4m and 8s period. 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 1.9m 8s and forecast to arrive on Wednesday (Jul 22) at 2PM. 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 Thursday (Jul 23) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Wed 22nd Jul) | 4.5ft (1.4m) 8s |
| Best Surf | 8PM (Wed 22nd Jul) | 4.5ft (1.4m) 8s |
| Most Powerful | 2PM (Wed 22nd Jul) | 6ft (1.9m) 8s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, let’s get straight into it. Rusty here.
First thing you need to know: we’ve got a flat spell ahead. The finder shows no surf worth paddling out for across the entire 16-day window at Diamond Beach. That’s a long stretch of nothing, mate. The first recommendation is on Monday morning, 20 July, but the conditions are poor – tiny swell, 1ft, cross-onshore wind from the ENE at 6 mph, and the combined swell energy is a weak 16. It’s a no-go. The whole period is a write-off for surf.
From 20 July right through to 4 August, every single session is rated as poor surf conditions. The swell never gets above 6ft, and even that 6ft on Wednesday morning, 22 July, comes with a strong cross-shore wind from the SW at 16 mph, and while the combined energy hits 593 (moderate), it’s messy and blown out. The best looking window might be Wednesday afternoon, 22 July, with a clean cross-offshore wind from the WSW at 19 mph, 5ft swell from the SSE at 9 seconds, but it’s still marked poor. The water temperature is 76°, which is about 2° warmer than average for this time of year, so it’s a touch warmer than usual, but that doesn’t save the surf.
There are no standouts. Not a single session worth highlighting. The consistency is listed as “inconsistent” for Diamond Beach, and that’s exactly what we’re seeing. For a spot that’s exposed to the SE, the swell direction is mostly S or SSE, which isn’t ideal, and the winds are rarely offshore. This is a classic case of a blank run that’s normal for the area when the conditions don’t line up. Keep an eye on the forecasts, but for now, leave the boards at home.
Rusty.
Short Range ForecastHeavy rain (total 62mm), heaviest during Tue night. Warm (max 28°C on Wed afternoon, min 19°C on Thu morning). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 23°C on Thu afternoon, min 20°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Mon 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | Sunday 26 | ||||||||||||||
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 7 | SSE 4 | SSE 5 | S 5 | S 8 | S 8 | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 8 | SE 6 | SE 8 | E 7 | SE 7 | SE 8 | SE 8 | SE 8 | ESE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 17 | 21 | 30 | 70 | 256 | 213 | 222 | 163 | 96 | 55 | 20 | 19 | 12 | 38 | 70 | 14 | 29 | 40 | 31 | 39 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-on | glassy | cross | on | cross-on | cross | cross-on | cross | cross | cross-on | glassy |
High Tide | 2:08PM1.48m | 2:17AM1.29m | 2:56PM1.44m | 3:07AM1.20m | 3:45PM1.42m | 4:00AM1.13m | 4:36PM1.41m | 4:57AM1.09m | 5:30PM1.41m | 5:56AM1.10m | 6:23PM1.44m | 6:51AM1.14m | 7:11PM1.49m | |||||||
Low Tide | 7:54PM0.25m | 8:10AM0.16m | 8:57PM0.30m | 9:03AM0.23m | 9:58PM0.31m | 9:58AM0.27m | 10:54PM0.29m | 10:49AM0.28m | 11:44PM0.25m | 11:38AM0.27m | 00:32AM0.20m | 12:26PM0.24m | 1:17AM0.15m | |||||||
 |  |  | |  |  | |  |  | | | | |  |  | | | | | | |
 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — | 5:52 | — | — | 5:54 | — | — |
 | 8:21 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — | — | 8:16 | — | — | 8:15 | — |
mm | — | — | 1 | 7 | 45 | 3 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 24 | 24 | 25 | 27 | 24 | 25 | 28 | 27 | 20 | 23 | 22 | 22 | 23 | 23 | 23 | 23 | 22 | 22 | 23 | 23 |
Feels °C | 24 | 25 | 26 | 25 | 22 | 25 | 28 | 28 | 16 | 20 | 20 | 21 | 21 | 21 | 20 | 20 | 20 | 21 | 23 | 24 |
Swell 1 Height (m) Direction Period (s) | E 12 | SE 12 | SE 8 | E 12 | — | — | SSE 9 | SSE 8 | SSE 8 | SSE 8 | SE 8 | SE 6 | SE 6 | SE 8 | SSE 5 | SE 7 | SE 8 | SE 8 | SE 8 | ESE 8 |
| kJ | 3 | 6 | 3 | 3 | — | — | 222 | 163 | 96 | 55 | 20 | 19 | 12 | 38 | 4 | 14 | 29 | 40 | 31 | 39 |
Swell 2 Height (m) Direction Period (s) | SE 8 | — | — | — | — | — | — | — | NE 4 | ENE 5 | SSE 7 | SE 8 | SE 8 | NE 4 | SE 4 | — | — | — | S 5 | ENE 4 |
| kJ | 3 | — | — | — | — | — | — | — | 3 | 2 | 16 | 11 | 11 | 4 | 5 | — | — | — | 4 | 3 |
Swell 3 Height (m) Direction Period (s) | SE 12 | — | E 12 | — | — | — | — | — | — | SE 9 | NE 5 | SE 8 | SSE 6 | S 6 | S 5 | — | — | — | — | ENE 4 |
| kJ | 6 | — | 3 | — | — | — | — | — | — | 12 | 1 | 16 | 3 | 3 | 2 | — | — | — | — | 3 |
Wind waves Height (m) Direction Period (s) | SSE 7 | SSE 4 | SSE 5 | S 5 | S 8 | S 8 | — | NW 2 | N 3 | — | — | ENE 3 | ENE 4 | ESE 4 | E 7 | ESE 4 | ESE 4 | ENE 4 | E 4 | — |
| kJ | 17 | 21 | 30 | 70 | 256 | 213 | — | 1 | 6 | — | — | 4 | 3 | 5 | 70 | 14 | 15 | 13 | 12 | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 2268 | 1001 | 1166 | 1166 | 247 | 156 | 28 | 3 | 5 | 28 | 28 | 289 | 372 | 125 | 391 | 422 | 206 | 227 | 123 | 2 |
Best forecast wave conditions in New Jersey | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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.
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