Surf Forecasts:
Rockpiles surf forecast from 30 Aug 2026:
- Most powerful swell: Saturday 5 Sep, 8PM (local time) - 10ft (3.0m), 8s period, ENE swell with 995 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 3.0m 8s and forecast to arrive on Saturday (Sep 05) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sat 5th Sep) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright, grab a coffee and settle in. Rusty here with a look at what’s cooking for Rockpiles over the next couple of weeks. Let’s be honest from the start – this isn't going to be a classic run.
We’ve got a whole heap of days ahead, but the forecast is basically a long, frustrating wait. For the first week, through to around Tuesday the 3rd of September, the wind is a real problem. It’s hammering straight out of the ENE, gusting 18 to 25 mph, and sitting as a cross-offshore breeze. While cross-off is usually okay, the strength of it is just tearing the surface up. The swell is mostly small to average, around 5 ft to 6 ft, but it’s coming from that same ENE direction with a short period of just 7 to 8 seconds. That’s weak, disorganised stuff. The combined energy is mostly in the moderate range (between 463 and 872), but the quality is poor. The data calls it "poor surf conditions" or "marginal" every single time through this whole stretch. Honestly, it looks more like a kite session than a paddle-out.
Now, there is a flicker of hope. On Wednesday the 4th of September, the swell direction swings around to the south for a moment, and we see a period jump to 16 seconds, with combined swell energy hitting 848. That’s proper groundswell energy, but the height is only around 3 ft. Still, a shift in direction and a long period is something to note, even if it’s marginal.
The real standout, the one that has me a little more interested, is down the line a bit. Keep your eye on Sunday the 8th of September. The swell is predicted to be 13 ft from the ENE, with a period stretching out to 11 seconds. The combined wave energy is 4141 – that’s very strong. But that comes with a massive caveat. That is a lot of ocean. Over 8 ft at this break, and you’re looking at an expert-only zone. Add in the fact that the wind is still blowing a strong 28 mph breeze, even as cross-off, and the forecast is still only "marginal". This is a long-range call, so it’s promising but not certain. If that ENE swell lines up right with the optimum SSE direction, it could be a serious day for those who know what they’re doing, but the wind is the big worry.
The rest of the second week just fades out. By the 9th of September, the swell drops back down to sub-3 ft with short periods, and by the 13th, we’re looking at tiny 2 ft waves with a gentle breeze and cross-shore conditions. Not worth paddling for.
So, if you’re a beginner, don’t even think about it until conditions clean up. For the experienced crew, that Sunday the 8th is the only date on the calendar that might offer something special, but it’s a gamble. For now, I’d be checking the wind forecasts daily.
Rusty.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Sat afternoon, min 25°C on Sat night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | ||||||||||||||
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) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | ||||||||||||||||||||
189 | 557 | 371 | 293 | 237 | 343 | 382 | 410 | 392 | 432 | 443 | 422 | 318 | 275 | 331 | 296 | 283 | 305 | 344 | 526 | |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 4:49PM0.57m | 5:30AM0.50m | 5:18PM0.51m | 6:18AM0.53m | 5:48PM0.44m | 7:14AM0.56m | 6:20PM0.36m | 8:21AM0.59m | 6:54PM0.28m | 9:39AM0.62m | 7:57PM0.22m | 10:58AM0.66m | 10:35PM0.19m | |||||||
Low Tide | 11:17PM0.05m | 11:22AM0.14m | 11:42PM0.05m | 12:22PM0.19m | 00:10AM0.05m | 1:40PM0.23m | 00:43AM0.05m | 3:38PM0.25m | 1:25AM0.06m | 6:22PM0.22m | 2:24AM0.08m | 7:30PM0.17m | 3:46AM0.09m | |||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | |
6:50 | — | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | |
mm | — | — | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 22 | 22 | 22 | 21 | 22 | 23 | 23 | 22 | 24 | 24 | 23 | 24 | 24 | 23 | 23 | 23 | 22 | 23 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | E 12 | S 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 | E 13 | E 13 | E 13 |
110 | 102 | 171 | 100 | 199 | 144 | 138 | 192 | 329 | 314 | 364 | 422 | 318 | 275 | 268 | 192 | 173 | 222 | 273 | 199 | |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 17 | SSW 12 | SSW 16 | S 11 | S 11 | S 11 | S 10 | S 10 | S 12 | S 10 | SSE 10 | S 11 | E 13 | E 13 | E 12 | E 12 | S 13 | S 13 | S 13 |
89 | 186 | 46 | 162 | 59 | 82 | 55 | 50 | 30 | 75 | 35 | 33 | 58 | 125 | 121 | 103 | 68 | 170 | 121 | 119 | |
Swell 3 Height (m) Direction Period (s) | S 12 | W 12 | SSE 12 | ENE 11 | ENE 10 | S 21 | SSW 19 | SW 14 | SW 14 | SW 14 | SW 14 | SW 14 | E 14 | S 11 | SSE 10 | S 10 | E 15 | SW 12 | SSW 13 | SSW 20 |
75 | 11 | 48 | 40 | 37 | 34 | 122 | 54 | 50 | 51 | 51 | 30 | 66 | 58 | 33 | 31 | 104 | 6 | 17 | 37 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 |
189 | 557 | 371 | 293 | 237 | 343 | 382 | 410 | 392 | 432 | 443 | 363 | 318 | 270 | 331 | 296 | 283 | 305 | 344 | 526 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 127 | 127 | 38 | 44 | 30 | 38 | 38 | 30 | 30 | 127 | 30 | 30 | 127 | 31 | 30 | 127 | 30 | 32 | 129 | 30 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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Information about the Rockpiles Surf forecast
The above surf forecast table for Rockpiles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Rockpiles can be found by selecting the local surf guide option on the grey menu. Our Rockpiles 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 (Rockpiles) 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 Rockpiles 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.
Rockpiles is 4 km (2 miles) from Honolulu. If you plan a vacation in Oahu, look for hotels and other accommodation in Honolulu. Honolulu has rooms for a wide range of budgets as well as car hire and transport links.











