Surf Forecasts:
Diamond Beach surf forecast from 14 Aug 2026:
- Most powerful swell: Monday 17 Aug, 2AM (local time) - 4ft (1.2m), 6s period, S swell with 88 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 1.2m 6s and forecast to arrive on Monday (Aug 17) 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 4s period and expected on Saturday (Aug 15) at 2PM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Mon 17th Aug) | 4ft (1.2m) 6s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, grab your wettie, ‘cause we’ve got a bit of a flat spell on the cards. I’m looking at Diamond Beach for the next couple of weeks, and honestly, it’s a slow burn. We’ve got a lot of nothing happening before things start to look a little more interesting way down the line.
Right off the bat, for the next week or ten days, it’s pretty bleak. The waves are tiny, we’re talking ankle to knee-high slop, and the winds are mostly junk – cross-shore and cross-onshore chop. There are a few mornings with clean conditions, like the 17th and 18th, where a light off-shore has things looking tidy, but there’s just no energy behind it. It’s a real struggle to even get excited about a paddle. The water at Diamond Beach is sitting at about 77°, which is a touch warmer than normal for this time of year, so at least the wait won’t be a cold one. This stretch is all about patience.
The first sniff of something surfable shows up around the 28th of August. We finally see a bit of a pulse, and the wind swings offshore in the morning. It’s not big – still around 2ft – but the energy is starting to pick up, with a combined energy reading of 90. The period is a workable 10 seconds, which is better than the short-period dribble we’ve been seeing. This Thursday morning is the first real window where it might be worth a look if you’re desperate and just need to get wet.
Then we get a bit of a tease into the 29th. The swell nudges up a touch to 2ft, coming from the east, and the energy climbs over the 100 mark to 107, which kicks it into that moderate range. Still not a classic day by any stretch, but there’s more push behind it. The winds are light and variable in the morning, making for cleaner conditions. It’s the most promising window we have in the whole forecast, but even so, I’d be managing expectations. It's surfable, but it’s hardly going to be a day you remember for years. It might be worth checking out, but it’s nothing to write home about.
So, here’s the deal: the first week and a half is a write-off. A long, drawn-out dry spell with just a whole lot of nothing. If you’ve got other hobbies, now’s the time. The last couple of days of the month are the only real glimmer of hope, but it’s still a marginal call. We’re not talking about a swell of the decade, just a couple of days where the surf is actually rideable and the wind is clean enough to make it worth the effort. Hang tight, keep an eye on that forecast, and maybe we get lucky.
Rusty.
Short Range ForecastModerate rain (total 18mm), heaviest on Sun night. Warm (max 26°C on Fri morning, min 21°C on Sun afternoon). Winds increasing (calm on Fri night, fresh winds from the SSE by Sun night). | Days 4-6 Weather SummarySome drizzle, heaviest during Wed afternoon. Warm (max 29°C on Mon afternoon, min 22°C on Tue morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | |||||||||||||||
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 | E 13 | S 5 | NE 3 | ENE 4 | SSE 6 | SE 4 | SSE 4 | S 6 | SSE 6 | SSE 6 | SE 7 | SE 9 | SE 12 | SE 11 | SE 10 | SE 10 | SSE 4 | S 4 | ESE 8 | SE 8 |
Wave Graph | |||||||||||||||||||||
3 | 3 | 3 | 3 | 5 | 3 | 7 | 34 | 88 | 33 | 22 | 7 | 13 | 23 | 58 | 35 | 45 | 22 | 12 | 7 | 11 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | glassy | cross-on | cross-off | cross | cross-on | on | on | on | cross-off | off | off | cross-on | cross-on | on | cross-on | cross-on | cross-on | cross-on | off | off | cross-off |
High Tide | 10:16AM1.61m | 10:29PM1.68m | 11:04AM1.60m | 11:16PM1.58m | 11:53AM1.57m | 00:04AM1.46m | 12:41PM1.53m | 00:53AM1.34m | 1:28PM1.47m | 1:42AM1.23m | 2:16PM1.42m | 2:32AM1.15m | 3:04PM1.37m | 3:25AM1.09m | |||||||
Low Tide | 4:04PM-0.07m | 4:35AM-0.16m | 4:51PM-0.02m | 5:15AM-0.09m | 5:37PM0.06m | 5:55AM0.02m | 6:24PM0.16m | 6:35AM0.13m | 7:14PM0.26m | 7:19AM0.23m | 8:13PM0.33m | 8:12AM0.32m | 9:17PM0.36m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | |
mm | 2 | 3 | 1 | — | — | — | — | 3 | 9 | — | — | — | — | — | — | — | 1 | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 25 | 24 | 24 | 23 | 25 | 26 | 29 | 26 | 23 | 24 | 24 | 24 | 26 | 26 | 27 | 28 | 28 |
Feels °C | 29 | 29 | 30 | 25 | 26 | 24 | 24 | 22 | 27 | 28 | 30 | 28 | 24 | 26 | 25 | 26 | 26 | 26 | 28 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SE 9 | SE 9 | SE 9 | ENE 4 | S 6 | — | SSE 5 | SSE 6 | SSE 6 | SE 7 | SE 6 | SE 6 | SE 11 | SE 10 | NE 4 | SE 9 | ESE 9 | ESE 8 | SSE 4 |
3 | 3 | 3 | 3 | 3 | 2 | 2 | — | 49 | 33 | 22 | 7 | 9 | 10 | 58 | 35 | 1 | 12 | 7 | 7 | 3 | |
Swell 2 Height (m) Direction Period (s) | S 5 | S 5 | S 5 | — | — | SSE 6 | S 6 | — | SE 9 | — | SE 9 | S 5 | NNE 3 | SE 12 | NE 4 | ENE 4 | ENE 4 | — | SE 6 | ESE 6 | SE 8 |
1 | 1 | 2 | — | — | 3 | 6 | — | 3 | — | 3 | 5 | 1 | 23 | 1 | 2 | 2 | — | 2 | 4 | 11 | |
Swell 3 Height (m) Direction Period (s) | SE 7 | E 13 | — | — | — | SE 9 | ESE 8 | — | — | — | SE 9 | SE 9 | SE 9 | — | ENE 4 | S 5 | — | E 6 | — | — | E 6 |
2 | 3 | — | — | — | 3 | 7 | — | — | — | 3 | 3 | 13 | — | 2 | 2 | — | 1 | — | — | 1 | |
Wind waves Height (m) Direction Period (s) | — | — | — | NE 3 | ENE 4 | SE 3 | SE 4 | SSE 4 | S 6 | — | — | N 2 | — | — | ESE 2 | — | SE 10 | SSE 4 | S 4 | SSE 4 | — |
— | — | — | 3 | 5 | 2 | 6 | 34 | 88 | — | — | 1 | — | — | 1 | — | 45 | 22 | 12 | 6 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 2404 | 1434 | 558 | 502 | 3177 | 671 | 1183 | 1172 | 10 | 85 | 206 | 230 | 169 | 347 | 147 | 502 | 1142 | 1001 | 98 | 376 | 1001 |
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.











