Surf Forecasts:
Rockpiles surf forecast from 23 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.0m), 17s period, S swell with 594 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 1.0m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.5m 6s period and expected on Thursday (Aug 27) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.0m) 17s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Hey crew, Rusty here. Let's break down what's on the menu for Rockpiles over the next couple of weeks. It's gonna be a bit of a mixed bag, so listen up.
Right now, we're dealing with a classic case of the "looks better than it is" scenario. There's a solid 6-foot ENE windswell rolling in with moderate energy (604), but the wind is just howling. A strong cross-offshore breeze from the ENE at 25 mph is tearing the tops off everything, making it choppy and hard to read. The water temp is a pleasant 81°, which is normal for this time of year, but the surf quality is poor. This pattern of strong cross-off wind and short, messy 7-second swell is going to stick around for the rest of August. We get a tease on the 26th (Wednesday) afternoon with a tiny 2-foot, very long-period south swell (18 seconds), but that same cross-off wind keeps it from being anything you'd want to paddle out into. Honestly, it’s a tough stretch.
Fast forward to the start of September, and things get interesting. The big standout is Wednesday morning, the 2nd. The wind finally eases to a light breeze out of the ENE at just 6 mph. It's still cross-off, but that light air will leave the surface glassy. We've got a clean 3-foot groundswell from the south with a 16-second period, and the energy bumps up to 820. For a reef like Rockpiles, that's a recipe for clean, long-lined waves. The afternoon of the 2nd is also worth a mention, as the swell swings back to a 6-foot ENE windswell with an 8-second period and even more energy (851), but the wind picks up to a gentle 9 mph. Still, that's a solid day of surf.
Then the wind machine turns back on. From the 3rd of September onward, it's back to strong cross-off breezes of 19-25 mph. The swell stays consistent in the 5 to 6-foot range from the ENE with a short period, and the energy gets strong, hitting 1058 on the afternoon of the 5th (Saturday). But with that wind, the setup is way more appealing for kiteboarding than paddle surfing. It's just going to be blown out.
So, if you're looking for a window, circle Wednesday, the 2nd of September on your calendar. That morning with the light wind and long-period south swell is the best chance for a clean session at Rockpiles. The rest of the period is mostly a fight against the wind.
Rusty, out.
Short Range ForecastMostly dry. Warm (max 27°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 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | ||||||||||||||
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 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 |
Wave Graph | ||||||||||||||||||||
302 | 346 | 276 | 350 | 277 | 277 | 254 | 261 | 310 | 310 | 247 | 233 | 307 | 351 | 594 | 427 | 482 | 260 | 324 | 212 | |
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 | 1:06AM0.23m | 1:52PM0.66m | 1:46AM0.26m | 2:26PM0.67m | 2:21AM0.29m | 2:56PM0.68m | 2:55AM0.33m | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | |||||||
Low Tide | 9:00PM0.16m | 6:08AM0.10m | 9:18PM0.14m | 6:59AM0.08m | 9:35PM0.13m | 7:43AM0.06m | 9:53PM0.11m | 8:24AM0.05m | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | |||||||
— | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 24 | 25 | 25 | 23 | 24 | 25 | 27 | 26 | 24 | 23 | 23 | 21 | 23 | 23 | 25 | 23 | 23 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SW 16 | SSW 16 | SW 15 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 |
255 | 212 | 116 | 191 | 100 | 168 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 594 | 427 | 482 | 260 | 324 | 173 | |
Swell 2 Height (m) Direction Period (s) | W 10 | SSE 12 | S 13 | SSE 13 | SSE 13 | SSE 12 | SSE 12 | SSE 7 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | S 12 | SSW 12 | NNE 8 | E 15 | E 14 | E 13 |
53 | 50 | 90 | 35 | 96 | 50 | 47 | 15 | 146 | 81 | 81 | 165 | 135 | 135 | 72 | 46 | 20 | 109 | 99 | 126 | |
Swell 3 Height (m) Direction Period (s) | S 12 | WNW 10 | SSW 15 | S 11 | SSW 15 | SSW 18 | SSE 7 | SSE 12 | SSE 12 | SSE 6 | SSW 18 | SSE 12 | SSE 6 | SSW 16 | N 8 | W 9 | E 16 | SSW 11 | SSW 19 | SSW 10 |
47 | 34 | 76 | 22 | 71 | 62 | 21 | 46 | 28 | 8 | 109 | 27 | 8 | 50 | 6 | 7 | 46 | 22 | 36 | 18 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 6 | ENE 6 | ENE 7 |
302 | 346 | 276 | 350 | 277 | 277 | 254 | 261 | 310 | 310 | 247 | 233 | 165 | 139 | 143 | 162 | 145 | 182 | 177 | 212 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 41 | 38 | 38 | 41 | 38 | 38 | 30 | 31 | 38 | 38 | 30 | 32 | 30 | 30 | 30 | 30 | 30 | 30 | 127 | 32 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
Header Global | ||||||||||||||||||||
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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.











