Surf Forecasts:
Castles surf forecast from 10 Aug 2026:
- Best quality surf: Monday 17 Aug, 8AM (local time) - 6ft (1.8m), 7s period, SSW swell with offshore winds.
- Most powerful swell: Monday 17 Aug, 2AM (local time) - 7ft (2.1m), 7s period, SSW swell with 384 kJ wave energy.
- Next surfable swell (1★+): Monday 17 Aug, 5AM (local time) - 5ft (1.6m), 7s period with SSW swell.
Best Forecast Surf Conditions for Castles this week:
The surf forecast for Castles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 17) at 5AM. The primary swell is predicted to be 1.6m and 7s period with a secondary swell of 0.1m and 12s. The wind is predicted to be offshore as the swell arrives.
The most powerful waves expected at Castles in the next 16 days are 2.1m 7s 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 0.7m 4s period and expected on Saturday (Aug 15) at 2AM.
| Wave Type | Time (EDT) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 17th Aug) | 5ft (1.6m) 7s |
| Best Surf | 8AM (Mon 17th Aug) | 6ft (1.8m) 7s |
| Most Powerful | 2AM (Mon 17th Aug) | 7ft (2.1m) 7s |
Table - best surf conditions forecast for Castles over the next 16 days.
The Lowdown
Alright, Rusty here. Let me tell you how it’s looking for our stretch of coast over the next couple of weeks.
Castles is our only real option, and honestly, it’s going to be a tough run for anyone here. The whole 16-day window starts with a long, bleak gap. From the beginning of the period through to around midday on the 17th, there’s nothing worth paddling out for – that’s a full week of poor conditions. The surf that does show up is small, weak (combined swell energy barely scratching into the double digits), and most of the time the wind is either cross-shore or cross-onshore, messing up the surface.
The standout moment arrives on Monday morning, August 17th. A little pulse of swell shows up, around 4ft from the south, and the wind swings cross-offshore from the north-northeast at just 6 mph. It’s clean, and the combined energy (126) finally feels like there’s a bit of life in the water. For a beginner spot like Castles (a sandbar break) that’s fairly consistent, it's the best we’re going to get, but conditions are described as "very ordinary." Still, Tuesday the 18th brings a long-period (15 seconds) groundswell with moderate energy (130-131), but the wind goes onshore and the surf is tiny at 1ft, so it’s messy. The water temp is about average for this time of year.
Later in the second week, around Thursday, August 20th, there’s another brief window. The swell is a bit stronger (2ft from the SE, period 10 seconds), and the wind is clean from the west-northwest. The combined energy (107-118) is moderate, but it's still just "ordinary" surf. The swell direction from the SE does match up with what Castles likes optimum from that direction, but with that small size and long gap between waves, it’s really only for the keenest who just need to paddle.
After that, the forecast turns poor again into the final days of the month, with onshores and lumpy chops. The best call is that window on the 17th and maybe the 20th. Given Castles is a sandbar, those long-period swells might break a bit straight, but at this size, it’s not a major issue. The overall energy is just too weak to get excited about for the rest of the time. It’s a grind, but we’ve had worse.
Rusty.
Short Range ForecastHeavy rain (total 20mm), heaviest during Tue night. Warm (max 32°C on Mon afternoon, min 22°C on Tue night). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Fri morning. Warm (max 28°C on Thu afternoon, min 21°C on Sat morning). Wind will be generally light. | ||||||||||||||||||||
Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | Friday 14 | Saturday 15 | Sunday 16 | |||||||||||||||
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) | ESE 7 | S 6 | SSW 5 | S 5 | SW 5 | SSW 6 | S 6 | S 6 | S 3 | SSW 5 | S 5 | S 5 | S 7 | S 7 | SSE 7 | SSE 7 | S 7 | S 7 | S 6 | S 5 | SSW 7 |
Wave Graph  | |||||||||||||||||||||
 kJ | 4 | 36 | 39 | 20 | 38 | 24 | 31 | 15 | 8 | 48 | 25 | 21 | 22 | 32 | 36 | 41 | 36 | 24 | 19 | 85 | 384 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-on | cross | cross-on | cross-on | cross-off | cross-off | cross-off | cross-off | cross | cross-on | cross-on | cross-on | cross-on | cross-off |
High Tide | 7:17PM1.47m | 7:51AM1.12m | 8:14PM1.51m | 8:47AM1.20m | 9:06PM1.51m | 9:37AM1.26m | 9:54PM1.48m | 10:23AM1.30m | 10:38PM1.41m | 11:08AM1.30m | 11:21PM1.32m | 11:54AM1.29m | 00:06AM1.21m | ||||||||
Low Tide | 12:45PM0.03m | 1:54AM0.00m | 1:45PM-0.02m | 2:45AM-0.06m | 2:41PM-0.06m | 3:31AM-0.09m | 3:32PM-0.06m | 4:14AM-0.09m | 4:21PM-0.04m | 4:55AM-0.06m | 5:09PM0.02m | 5:38AM0.00m | 6:00PM0.10m | ||||||||
 |  |  |  | |  |  | |  | | | | | | | | | | | | | |
 | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — |
 | — | 8:00 | — | — | 7:58 | — | — | 7:57 | — | — | 7:55 | — | — | 7:53 | — | — | 7:52 | — | — | 7:52 | — |
mm | — | — | — | 2 | — | 12 | 6 | — | — | — | — | — | 1 | — | — | — | — | — | — | — | 2 |
Temp °C | 28 | 32 | 30 | 25 | 31 | 29 | 23 | 25 | 25 | 26 | 28 | 27 | 24 | 25 | 25 | 22 | 22 | 23 | 24 | 25 | 25 |
Feels °C | 28 | 31 | 30 | 27 | 30 | 29 | 25 | 25 | 25 | 27 | 29 | 28 | 26 | 27 | 26 | 20 | 20 | 23 | 23 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | S 4 | SE 10 | SE 10 | S 5 | SE 9 | SSW 6 | S 6 | S 6 | ENE 4 | SE 8 | S 5 | S 5 | S 7 | S 7 | SSE 7 | SSE 7 | S 7 | S 7 | ENE 5 | SE 9 | S 12 |
| kJ | 3 | 4 | 4 | 20 | 3 | 24 | 31 | 15 | 2 | 3 | 25 | 14 | 22 | 32 | 36 | 41 | 36 | 24 | 2 | 3 | 3 |
Swell 2 Height (m) Direction Period (s) | ESE 7 | E 8 | E 8 | SE 9 | E 8 | SE 9 | ENE 4 | ENE 4 | ESE 8 | SE 11 | SE 8 | SE 10 | ESE 9 | NE 4 | E 13 | — | NE 5 | NE 5 | SE 9 | NE 4 | — |
| kJ | 4 | 1 | 1 | 3 | 1 | 3 | 12 | 5 | 7 | 4 | 3 | 4 | 8 | 2 | 3 | — | 16 | 5 | 3 | 1 | — |
Swell 3 Height (m) Direction Period (s) | S 6 | E 8 | — | E 8 | E 12 | E 8 | ESE 8 | ESE 8 | E 7 | NE 4 | SE 10 | SE 8 | SE 13 | SE 10 | E 8 | — | SE 9 | SE 9 | — | — | — |
| kJ | 3 | 1 | — | 1 | 3 | 1 | 7 | 7 | 1 | 1 | 4 | 2 | 7 | 4 | 1 | — | 3 | 3 | — | — | — |
Wind waves Height (m) Direction Period (s) | — | S 6 | SSW 5 | — | SW 5 | W 3 | — | — | S 3 | SSW 5 | NNE 3 | S 5 | NNE 3 | — | NNE 4 | NE 5 | — | — | S 6 | S 5 | SSW 7 |
| kJ | — | 36 | 39 | — | 38 | 3 | — | — | 8 | 48 | 1 | 21 | 4 | — | 15 | 18 | — | — | 19 | 85 | 384 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 1072 | 94 | 4 | 257 | 2640 | 1070 | 1565 | 944 | 944 | 71 | 480 | 222 | 222 | 222 | 480 | 145 | 936 | 944 | 944 | 1170 | 16 |
Best forecast wave conditions in New Jersey | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Castles Surf forecast
The above surf forecast table for Castles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Castles can be found by selecting the local surf guide option on the grey menu. Our Castles 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 (Castles) 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 Castles 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.
Castles is 8 km (5 miles) from Atlantic City. If you plan a vacation in New Jersey, look for hotels and other accommodation in Atlantic City. Atlantic City has rooms for a wide range of budgets as well as car hire and transport links.
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