Surf Forecasts:
Diamond Beach surf forecast from 18 Jul 2026:
- Best quality surf: Wednesday 22 Jul, 2PM (local time) - 3.5ft (1.1m), 9s period, SSE swell with cross-offshore winds.
- Most powerful swell: Wednesday 22 Jul, 2AM (local time) - 6ft (1.8m), 7s period, S swell with 303 kJ wave energy.
- Next surfable swell (1★+): Wednesday 22 Jul, 2PM (local time) - 3.5ft (1.1m), 9s period with SSE 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 2PM. The primary swell is predicted to be 1.1m and 9s 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 1.8m 7s and forecast to arrive on Wednesday (Jul 22) 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 0.6m 3s period and expected on Sunday (Jul 19) at 5AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2PM (Wed 22nd Jul) | 3.5ft (1.1m) 9s |
| Best Surf | 2PM (Wed 22nd Jul) | 3.5ft (1.1m) 9s |
| Most Powerful | 2AM (Wed 22nd Jul) | 6ft (1.8m) 7s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, let’s talk about Diamond Beach. I’ve looked at the next 16 days, and I gotta be straight with you – there’s nothing worth paddling out for. This spot is already an inconsistent one, exposed to the open ocean but only picking up small, short-period junk. The optimum swell direction is southeast, but we’re not seeing anything that lines up properly. The entire stretch from July 18 through to August 2 is a write-off – no real surf on offer.
The water temperature is sitting at 75.6°F, which is about 2.2°F warmer than the long-term average for this time of year. That’s a touch warmer than normal, but it doesn’t matter much when the waves are this flat.
The first few days are just grim. Saturday July 18 morning has a weak 2.0ft south swell with a period of only 4 seconds – that’s pure wind chop. Combined energy is just 21, which is pathetic. The onshore breeze is cross-on at 12 mph, making it choppy. It doesn’t get any better through the weekend. Sunday July 19 morning offers offshore wind from the northwest at 12 mph, which would normally be a blessing, but the swell is only 2.0ft from the SSE with a 7-second period, energy of 40. Clean but tiny. Not even worth a paddle.
Monday and Tuesday are even worse – tiny 1.3ft to 2.6ft swells with onshore or
Short Range ForecastHeavy rain (total 24mm), heaviest during Sat night. Warm (max 29°C on Sat afternoon, min 21°C on Sun night). Winds decreasing (strong winds from the WSW on Sat night, light winds from the NNE by Sun night). | Days 4-6 Weather SummaryHeavy rain (total 52mm), heaviest during Tue night. Warm (max 29°C on Tue afternoon, min 19°C on Wed night). Winds decreasing (strong winds from the SSW on Tue night, light winds from the NW by Wed night). | ||||||||||||||||||||
Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | |||||||||||||||
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) | S 4 | S 5 | S 6 | SSE 7 | S 7 | SSE 7 | SSE 7 | SSE 7 | SSE 4 | SE 5 | SSE 4 | S 7 | SSE 9 | SSE 9 | SSE 8 | SSE 8 | S 7 | SE 8 | SE 7 | E 5 | SE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 9 | 65 | 109 | 37 | 27 | 17 | 18 | 18 | 20 | 26 | 24 | 303 | 208 | 169 | 108 | 73 | 28 | 21 | 17 | 37 | 53 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross-on | cross-off | off | off | cross-off | cross | on | cross-on | cross-on | cross-on | cross-off | cross-off | off | cross-off | cross-off | cross-on | cross-off | cross | cross-on | cross-on |
High Tide | 12:28PM1.52m | 00:36AM1.52m | 1:19PM1.50m | 1:27AM1.40m | 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 | ||||||||
Low Tide | 6:04PM0.07m | 6:34AM-0.04m | 6:56PM0.17m | 7:20AM0.06m | 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 | ||||||||
 |  |  | |  |  | | |  | | | | | | | | | | | | | |
 | 5:48 | — | — | 5:48 | — | — | 5:48 | — | — | 5:50 | — | — | 5:50 | — | — | 5:52 | — | — | 5:52 | — | — |
 | — | 8:22 | — | — | 8:22 | — | — | 8:21 | — | — | 8:20 | — | — | 8:19 | — | — | 8:19 | — | — | 8:17 | — |
mm | — | 2 | 22 | — | — | — | — | — | — | 2 | 4 | 46 | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 29 | 25 | 25 | 27 | 26 | 23 | 24 | 24 | 24 | 29 | 27 | 24 | 28 | 27 | 21 | 23 | 22 | 23 | 23 | 23 |
Feels °C | 25 | 28 | 25 | 24 | 24 | 25 | 22 | 23 | 24 | 24 | 28 | 27 | 24 | 29 | 28 | 19 | 22 | 21 | 21 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | SE 8 | SE 8 | SE 13 | SSE 7 | S 7 | SSE 7 | SSE 7 | SE 12 | S 7 | SE 8 | SE 8 | — | SSE 9 | SSE 9 | SSE 8 | SSE 8 | S 7 | SE 8 | SE 7 | SE 8 | E 5 |
| kJ | 3 | 3 | 7 | 37 | 27 | 17 | 18 | 6 | 8 | 2 | 2 | — | 208 | 169 | 108 | 73 | 28 | 21 | 17 | 34 | 19 |
Swell 2 Height (m) Direction Period (s) | SE 14 | SE 13 | E 8 | E 13 | E 13 | — | E 12 | — | SE 12 | SE 12 | SE 12 | — | — | — | — | NE 4 | SE 8 | SSE 7 | S 7 | S 6 | SE 8 |
| kJ | 7 | 7 | 1 | 3 | 3 | — | 3 | — | 6 | 6 | 5 | — | — | — | — | 3 | 21 | 15 | 4 | 7 | 53 |
Swell 3 Height (m) Direction Period (s) | E 9 | E 9 | — | — | — | SE 12 | SE 12 | SE 8 | — | E 12 | — | — | — | — | — | — | — | SE 10 | SE 9 | — | S 7 |
| kJ | 2 | 1 | — | — | — | 6 | 6 | 3 | — | 3 | — | — | — | — | — | — | — | 4 | 12 | — | 28 |
Wind waves Height (m) Direction Period (s) | S 4 | S 5 | S 6 | WNW 3 | NW 3 | — | — | SSE 7 | SSE 4 | SE 5 | SSE 4 | S 7 | WSW 3 | W 3 | NNW 2 | NNW 3 | ENE 4 | NE 4 | ENE 4 | E 5 | E 5 |
| kJ | 9 | 65 | 109 | 4 | 2 | — | — | 18 | 20 | 26 | 24 | 303 | 4 | 1 | 1 | 2 | 12 | 5 | 13 | 37 | 43 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1135 | 2819 | 29 | 2 | 29 | 91 | 98 | 372 | 346 | 247 | 1166 | 23 | 29 | 0 | 64 | 0 | 372 | 29 | 205 | 372 | 8 |
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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