
Surf Forecasts:
Diamond Beach surf forecast from 6 Sep 2026:
- Best quality surf: Thursday 10 Sep, 8PM (local time) - 4ft (1.2m), 5s period, S swell with offshore winds.
- Most powerful swell: Thursday 10 Sep, 2AM (local time) - 4.5ft (1.4m), 5s period, SSW swell with 117 kJ wave energy.
- Next surfable swell (1★+): Thursday 10 Sep, 8PM (local time) - 4ft (1.2m), 5s 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 Thursday (Sep 10) at 8PM. The primary swell is predicted to be 1.2m and 5s period with a secondary swell of 0.2m and 9s. Another secondary swell of 0.1m and 8s is also forecast. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Diamond Beach in the next 16 days are 1.4m 5s and forecast to arrive on Thursday (Sep 10) at 2AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 3s period and expected on Tuesday (Sep 08) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8PM (Thu 10th Sep) | 4ft (1.2m) 5s |
| Best Surf | 8PM (Thu 10th Sep) | 4ft (1.2m) 5s |
| Most Powerful | 2AM (Thu 10th Sep) | 4.5ft (1.4m) 5s |
Table - best surf conditions forecast for Diamond Beach over the next 16 days.
The Lowdown
Alright, Rusty here again. Let’s be straight with you—this stretch of days ahead is a tough one for paddlers. I’ve been lookin’ at Diamond Beach, and for the whole 16-day window, we’re in a real flat spell.
Overall Pattern
Right off the bat, we’ve got nothing on offer. The first record kicks off on Sunday, September 6th, and it’s a sad story from there. The whole forecast period is just a long gap of poor surf conditions. We’re lookin’ at a solid 16 days with no real recommendations. The tiny bits of energy that show up are weak—combined energy sittin’ between 8 and 88 (that’s low, folks). The swell heights barely get over 3 ft, and when they do, the wind is a mess. For most of this time, the waves are small, choppy, and crossed-up.
Diamond Beach
Now, let’s talk about the only spot we’ve got. Diamond Beach is an exposed, east-facing setup, and it’s best with a SE swell. The water temperature is a wild one: it’s 77°F, which is a whopping 6°F warmer than normal for this time of year. That’s very unusual—you’d be sweating in a spring suit, that’s for sure.
The first few days are a write-off. Sunday afternoon, September 6th, we’ve got a tiny 1 ft E swell with a 7-second period, all messed up by a cross-on E wind at 9 mph. Combined energy is only 14. Not worth paddlin’ out.
Monday, September 7th, is a slightly better story for the morning—clear skies, a light NE cross breeze at 6 mph, but the swell is still 1 ft from the east with a 7-second period. Combined energy at 19. It’s not breaking. The afternoon sees a 1 ft E swell with a slightly longer 10-second period, but the wind goes cross-on from the south at 6 mph. Again, poor.
Tuesday, September 8th, is a tease. The morning has a clean offshore wind from the WNW at 6 mph, but the swell is a pathetic 0.7 ft from the east. Combined energy of 9. The afternoon stays clean with a light cross-off wind, but same tiny swell. It’s glassy, but there’s nothing to ride.
We get a little bump mid-week. Wednesday, September 9th, the morning sees a 2 ft SSW swell, but it’s a 4-second period (that’s short-period wind slop) and a moderate cross-shore wind at 16 mph. Combined energy of 20. The afternoon gets a bit bigger—3 ft S swell, still a 4-second period, but now a fresh cross-on wind at 19 mph. Lumpy and messy. Not your day.
Thursday, September 10th, is the best of the worst. The morning has a clean cross-off wind from the WSW at 16 mph, with a 4 ft SSW swell and a 5-second period. Combined energy of 88. It’s the highest energy we see, but it’s still short-period, bumpy, and poorly shaped. The afternoon gets a clean offshore wind from the NW at 9 mph, with a 3 ft S swell and a 6-second period. Combined energy of 44. It’s clean, but it’s tiny. If you’re desperate and on a longboard, maybe, but I wouldn’t rush.
After that, Friday September 11th through to the end of the window on September 21st, it’s a grind. Tiny swells, mostly 0.3 ft to 1 ft, with a mix of cross and onshore winds. The only notable thing is that on Thursday, September 17th, we get a glassy afternoon with a 0.3 ft SE swell and a 12-second period, combined energy of 11. That’s a long-period groundswell, but there’s zero power behind it. By Monday, September 21st, we get a fresh offshore wind from the NW at 19 mph, but the swell is only 0.7 ft from the ESE with an 8-second period. Clean, but flat.
The Bottom Line
Look, folks, this is a blank run. We’ve got one break, and it’s almost never got enough energy or clean wind at the same time. The consistency is lackin’, and the forecasts could change, but right now, the setup looks way more interesting for kite surfing than for paddle surfing when the wind picks up—especially on days like Wednesday, September 9th and Sunday, September 20th, when we’ve got 3 ft+ of lumpy, cross-on chop.
There’s no standout here. No best on offer. Just a 16-day stretch of poor conditions. Stash the board, wax a different hobby, and wait for the next swell.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Sun afternoon. Warm (max 25°C on Tue afternoon, min 20°C on Mon morning). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 9mm), mostly falling on Thu night. Warm (max 27°C on Thu afternoon, min 18°C on Sat morning). Winds decreasing (strong winds from the SSW on Wed night, calm by Thu night). | |||||||||||||||||||
Sun 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | Saturday 12 | ||||||||||||||
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) | E 7 | E 8 | E 7 | E 10 | E 10 | E 9 | E 9 | SSW 4 | SSW 4 | S 4 | SSW 5 | SSW 5 | S 6 | SSE 6 | SSE 6 | SE 6 | SE 6 | ESE 9 | ESE 9 | SE 10 |
Wave Graph | ||||||||||||||||||||
8 | 18 | 8 | 29 | 16 | 6 | 6 | 13 | 11 | 35 | 117 | 83 | 41 | 48 | 13 | 6 | 10 | 8 | 8 | 14 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | glassy | cross | cross-on | cross-off | off | cross-off | cross | cross | cross-on | cross | cross-off | off | cross-off | cross-off | off | cross-off | cross-on | on | cross-on |
High Tide | 4:46PM1.54m | 5:31AM1.29m | 5:54PM1.58m | 6:35AM1.40m | 6:54PM1.65m | 7:30AM1.51m | 7:47PM1.69m | 8:19AM1.60m | 8:34PM1.70m | 9:05AM1.66m | 9:19PM1.66m | 9:48AM1.68m | 10:02PM1.59m | |||||||
Low Tide | 11:20PM0.12m | 11:20AM0.13m | 00:15AM0.03m | 12:19PM0.05m | 1:06AM-0.05m | 1:14PM-0.01m | 1:54AM-0.11m | 2:06PM-0.06m | 2:39AM-0.14m | 2:56PM-0.07m | 3:22AM-0.13m | 3:42PM-0.05m | 4:02AM-0.08m | |||||||
— | — | 6:33 | — | — | 6:33 | — | — | 6:33 | — | — | 6:35 | — | — | 6:35 | — | — | 6:37 | — | — | |
7:22 | — | — | 7:21 | — | — | 7:19 | — | — | 7:16 | — | — | 7:15 | — | — | 7:14 | — | — | 7:13 | — | |
mm | 2 | — | — | — | — | — | — | — | — | — | — | — | — | 9 | — | — | — | — | — | — |
Temp °C | 22 | 22 | 22 | 23 | 23 | 22 | 25 | 24 | 23 | 26 | 24 | 26 | 27 | 22 | 20 | 23 | 22 | 20 | 22 | 23 |
Feels °C | 21 | 22 | 22 | 23 | 22 | 22 | 23 | 22 | 20 | 23 | 21 | 24 | 26 | 22 | 16 | 19 | 19 | 19 | 21 | 21 |
Swell 1 Height (m) Direction Period (s) | E 7 | E 8 | E 7 | E 10 | E 10 | E 9 | E 9 | SE 9 | SE 8 | E 9 | SE 9 | SE 9 | SE 9 | SSE 6 | SSE 6 | SE 6 | SE 6 | SE 6 | ESE 9 | SE 10 |
8 | 18 | 8 | 29 | 16 | 6 | 6 | 3 | 3 | 2 | 3 | 3 | 3 | 48 | 13 | 6 | 10 | 6 | 8 | 14 | |
Swell 2 Height (m) Direction Period (s) | SE 9 | SE 9 | E 10 | SE 8 | SE 8 | SE 8 | SE 9 | E 8 | E 9 | E 9 | E 9 | E 9 | — | ESE 10 | SE 10 | ENE 4 | ENE 4 | ESE 9 | SE 6 | SE 5 |
3 | 3 | 8 | 3 | 3 | 3 | 3 | 1 | 2 | 6 | 2 | 2 | — | 9 | 4 | 2 | 2 | 8 | 2 | 1 | |
Swell 3 Height (m) Direction Period (s) | S 5 | E 9 | SE 9 | S 5 | S 5 | — | — | — | SE 10 | — | — | — | — | E 8 | ESE 10 | S 5 | SE 9 | NE 4 | S 6 | S 6 |
1 | 2 | 3 | 1 | 1 | — | — | — | 4 | — | — | — | — | 1 | 9 | 2 | 3 | 1 | 1 | 1 | |
Wind waves Height (m) Direction Period (s) | ENE 3 | — | — | — | SW 3 | — | — | SSW 4 | SSW 4 | S 4 | SSW 5 | SSW 5 | S 6 | — | N 3 | — | NNW 2 | — | — | — |
2 | — | — | — | 4 | — | — | 13 | 11 | 35 | 117 | 83 | 41 | — | 6 | — | 1 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 497 | 59 | 66 | 323 | 65 | 123 | 1144 | 325 | 325 | 734 | 734 | 30 | 2 | 7 | 32 | 223 | 502 | 1136 | 3104 | 502 |
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.










