Surf Forecasts:
Diamond Beach surf forecast from 15 Aug 2026:
- Best quality surf: Wednesday 19 Aug, 2AM (local time) - 1.5ft (0.5m), 11s period, SE swell with cross-offshore winds.
- Most powerful swell: Monday 17 Aug, 2AM (local time) - 4ft (1.2m), 5s period, S swell with 71 kJ wave energy.
- Next surfable swell (1★+): Wednesday 19 Aug, 2AM (local time) - 1.5ft (0.5m), 11s 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 (Aug 19) at 2AM. The primary swell is predicted to be 0.5m and 11s period with a secondary swell of 0.4m and 11s. 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 1.2m 5s and forecast to arrive on Monday (Aug 17) 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 0.3m 2s period and expected on Tuesday (Aug 18) at 8AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 19th Aug) | 1.5ft (0.5m) 11s |
| Best Surf | 2AM (Wed 19th Aug) | 1.5ft (0.5m) 11s |
| Most Powerful | 2AM (Mon 17th Aug) | 4ft (1.2m) 5s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, let’s get inta it. Lookin’ at the charts for Diamond Beach and, well, I gotta be straight with ya—it’s pretty flat out there for a good long while. The swell is just barely whisperin' with tiny waves, mostly under 3 feet, and the energy in the water is real weak.
We start off this Saturday morning with clear skies but the ocean is basically flat—we’re talkin’ 0.3ft of swell from the southeast with a 9-second period. The combined energy is a measly 4, so there’s just nothing to ride. The water temp is 77°, which is a touch warmer than normal for this time of year, so that’s somethin’. The wind is a light cross from the NE, which just messes with the tiny lumps. Sunday isn't any better. A bit more swell, 1ft to 2ft, but the wind swings around and gets onshore, chopping it all up. Monday cleans up a bit with a light cross-offshore, and we see those wave heights creep up to 3ft from the SSE. The period is a short 6 seconds, so it's not got any punch, but the energy jumps to 43, which is still weak but at least the surface looks clean. Tuesday is similar, clean and light offshore, 2ft and 2ft, but again, just not enough to get excited about.
The middle of next week and into the weekend sees the swell direction shift around a little, bumping up to 3ft on Friday the 21st with an easterly breeze that brings some chop. That's about as good as it gets for a while. The energy on that Friday morning hits 55, real moderate and weak, but the wind is cross-shore, so it’s not great. Over the weekend of the 22nd and 23rd, the wind gets a bit stronger and cross-onshore, keeping things messy on those small waves.
Now, here’s the thing—there is a long stretch here where there’s just no good surf on offer. For days and days, we got nothin' over 3 feet, and most of it’s just ankle-biters. We finally see a little bump around the 30th of August, the last day of the forecast. The swell gets up to 3ft to 4ft from the ENE with a short 5-6 second period. But the wind is a fresh cross-onshore at 19 mph, so it’s going to be lumpy, bumpy, and honestly, it looks more like a kitesurfing kind of day than a surfing day. The energy is still weak, hitting 83 at its peak, so even that’s not really worth paddling out for.
Diamond Beach is inconsistent at the best of times, but this run is pretty damn poor. It’s not lookin’ good, folks. If you’re desperate, the late afternoons on the 26th might be your best bet—there’s a chance of a glassy window with a tiny 1ft from the SSE. But don’t hold your breath. This is a blank run for surfers, plain and simple. The ocean just doesn’t want to give us anything to work with.
For the few of you who are new—wait it out. It won’t stay like this forever, and the long-range stuff is promisin’ but way too far out to trust. Keep your board waxed, but maybe take the fishing rod out instead.
Rusty out.
Short Range ForecastHeavy rain (total 21mm), heaviest during Sun afternoon. Warm (max 29°C on Mon afternoon, min 22°C on Sun afternoon). Winds increasing (light winds from the ESE on Sat afternoon, fresh winds from the SSE by Sun night). | Days 4-6 Weather SummaryModerate rain (total 17mm), heaviest on Thu afternoon. Warm (max 28°C on Tue afternoon, min 23°C on Tue morning). Wind will be generally light. | ||||||||||||||||||||
Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | Friday 21 | |||||||||||||||
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 | S 5 | SSE 6 | SSE 6 | SSE 3 | S 5 | SSE 6 | SSE 6 | SE 7 | SSE 7 | SE 7 | SE 11 | SE 10 | SE 9 | S 4 | SE 8 | SE 8 | ESE 8 | E 4 | E 5 | E 5 |
Wave Graph | |||||||||||||||||||||
3 | 3 | 3 | 11 | 7 | 71 | 43 | 31 | 37 | 31 | 22 | 57 | 34 | 41 | 22 | 11 | 11 | 6 | 41 | 42 | 55 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | on | cross-on | cross-on | on | cross-on | cross-off | cross-off | cross-off | off | cross-off | cross-off | cross-off | cross-on | cross | cross | cross | cross-off | cross | cross-on | cross-on |
High Tide | 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 | 3:56PM1.35m | 4:23AM1.07m | |||||||
Low Tide | 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 | 9:14AM0.37m | 10:19PM0.35m | ||||||||
6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 7:53 | — | — | 7:52 | — | — | 7:52 | — | — | 7:50 | — | — | 7:49 | — | — | 7:47 | — | — | 7:45 | — | |
mm | — | — | — | — | 5 | 12 | 2 | — | 2 | — | — | — | — | — | 1 | 1 | 9 | 6 | — | — | 1 |
Temp °C | 24 | 25 | 25 | 24 | 22 | 23 | 25 | 29 | 25 | 25 | 28 | 27 | 24 | 26 | 26 | 25 | 26 | 24 | 23 | 24 | 23 |
Feels °C | 25 | 26 | 26 | 24 | 21 | 20 | 27 | 31 | 26 | 26 | 26 | 26 | 24 | 26 | 25 | 28 | 30 | 28 | 24 | 25 | 23 |
Swell 1 Height (m) Direction Period (s) | SE 9 | SE 9 | SSE 6 | SE 9 | — | — | SSE 6 | SSE 6 | SE 7 | SSE 7 | SE 7 | SE 11 | SE 10 | SE 9 | SE 9 | S 4 | SE 8 | ESE 8 | S 5 | S 5 | S 6 |
3 | 3 | 3 | 3 | — | — | 43 | 31 | 37 | 31 | 22 | 57 | 34 | 41 | 12 | 5 | 11 | 6 | 2 | 2 | 1 | |
Swell 2 Height (m) Direction Period (s) | S 5 | S 5 | SE 9 | NE 4 | NE 4 | — | — | — | — | SE 13 | SE 12 | SE 11 | S 6 | — | ESE 7 | SE 8 | SSE 4 | SSE 4 | E 15 | E 15 | SE 14 |
1 | 1 | 3 | 1 | 1 | — | — | — | — | 7 | 6 | 40 | 6 | — | 5 | 11 | 3 | 2 | 4 | 4 | 8 | |
Swell 3 Height (m) Direction Period (s) | — | S 5 | — | SE 6 | NE 4 | — | — | — | — | SE 12 | — | SE 7 | — | — | — | E 6 | — | E 16 | SE 15 | SE 14 | S 7 |
— | 2 | — | 1 | 1 | — | — | — | — | 6 | — | 12 | — | — | — | 3 | — | 5 | 8 | 8 | 1 | |
Wind waves Height (m) Direction Period (s) | — | E 3 | SSE 2 | SSE 6 | SSE 3 | S 5 | — | — | WNW 2 | NW 3 | WNW 2 | — | — | SSE 9 | S 4 | — | — | ENE 3 | E 4 | E 5 | E 5 |
— | 1 | 1 | 11 | 7 | 71 | — | — | 1 | 1 | 1 | — | — | 33 | 22 | — | — | 1 | 41 | 42 | 55 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1381 | 3177 | 1232 | 1183 | 1397 | 1135 | 2 | 85 | 29 | 2 | 30 | 0 | 2 | 1135 | 28 | 210 | 1453 | 323 | 210 | 123 | 247 |
Best forecast wave conditions in New Jersey | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
- Map Icons:
Break
Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
Ocean Swells (m)
Wind Speed (km/h)
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.











