
Surf Forecasts:
Rockpiles surf forecast from 2 Sep 2026:
- Best quality surf: Monday 7 Sep, 11AM (local time) - 8ft (2.4m), 13s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 11AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,067 kJ wave energy.
- Next surfable swell (1★+): Monday 7 Sep, 5AM (local time) - 8ft (2.4m), 13s period with ENE swell.
Best Forecast Surf Conditions for Rockpiles this week:
The surf forecast for Rockpiles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Sep 07) at 5AM. The primary swell is predicted to be 2.4m and 13s period with a secondary swell of 1.3m and 12s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Rockpiles in the next 16 days are 3.0m 14s and forecast to arrive on Tuesday (Sep 08) at 11AM. 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 11s period and expected on Saturday (Sep 05) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5AM (Mon 7th Sep) | 8ft (2.4m) 13s |
| Best Surf | 11AM (Mon 7th Sep) | 8ft (2.4m) 13s |
| Most Powerful | 11AM (Tue 8th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s have a look at what’s on offer at Rockpiles over the next couple of weeks.
Right off the bat, it’s a bit of a slow start. The first recommendation doesn’t kick in until Thursday, September 5th, so the first few days are a write-off with strong cross-off winds and poor surf quality. You’re looking at a gap of a couple of days with nothing worth paddling out for.
Come Saturday morning, September 7th, things start to look up. The swell is a solid 8 ft from the ENE, with a period of 13 seconds — that’s a proper groundswell with some grunt. Combined energy is sitting at 3269 (strong), and with a gentle breeze from the NE keeping it cross-off, the surface will be clean. This is the standout window for experienced surfers. The water temp is about average for this time of year, nothing out of the ordinary. Rockpiles is a reef break, exposed to the SSE swell direction, and this ENE swell is a bit off the optimum, but it’s still producing. It’s a fairly consistent spot, though crowds are possible here, so expect a few other keen locals in the lineup.
Saturday afternoon and into Sunday, September 8th, the wind picks up a bit and the swell drops slightly, but it’s still manageable. The early part of the following week sees a bit of a lull — from Monday, September 9th through to Friday, September 13th, the conditions are marginal at best with fresh cross-off winds and shorter period swell (7-8 seconds). Not really worth getting excited about.
Then, from Sunday, September 15th onwards, we get a second window. The swell direction shifts to the SW, with a long period of 21 seconds on the Tuesday — that’s a very long period groundswell, which will wrap nicely into Rockpiles. The combined energy is moderate (896-848), but the wind is light and cross-off, so the surf will be clean. The swell height is only 3 ft, so it’s not big, but the quality will be there for those who know how to read a reef. Wednesday, September 17th and Thursday, September 18th look even better, with swell up to 4 ft and a period of 18 seconds, combined energy climbing to 1201-1477, and light winds. This is promising but we’re a week and a half out, so keep an eye on it.
Overall, the best on offer is Saturday morning, September 7th, for the bigger ENE swell and clean conditions. The second week’s SW groundswell window is a nice follow-up, but it’s smaller and less certain.
Rusty.
Short Range ForecastSome drizzle, heaviest during Tue night. Warm (max 26°C on Tue night, min 25°C on Tue night). Mainly strong winds. | Days 5-7 Weather SummaryModerate rain (total 11mm), heaviest on Mon morning. Warm (max 27°C on Sat afternoon, min 23°C on Mon morning). Winds decreasing (strong winds from the ENE on Fri night, light winds from the E by Mon morning). | ||||||||||||||||||
Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | Monday 7 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | ENE 8 | ENE 7 | ENE 8 | E 14 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 | ENE 13 | ENE 12 | SW 14 |
Wave Graph | |||||||||||||||||||
527 | 520 | 502 | 711 | 456 | 717 | 623 | 543 | 553 | 711 | 1846 | 1804 | 1930 | 1610 | 1485 | 1697 | 1787 | 1581 | 2111 | |
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 |
High Tide | 8:21AM0.59m | 6:54PM0.28m | 9:39AM0.62m | 7:57PM0.22m | 10:58AM0.66m | 10:35PM0.19m | 12:05PM0.69m | 00:18AM0.21m | 1:00PM0.73m | 1:21AM0.26m | 1:47PM0.73m | 2:09AM0.32m | |||||||
Low Tide | 00:43AM0.05m | 3:38PM0.25m | 1:25AM0.06m | 6:22PM0.22m | 2:24AM0.08m | 7:30PM0.17m | 3:46AM0.09m | 8:03PM0.13m | 5:11AM0.08m | 8:31PM0.10m | 6:25AM0.07m | 8:57PM0.08m | |||||||
— | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | 6:16 | — | — | |
6:46 | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:44 | — | — | 6:43 | — | — | 6:42 | — | |
mm | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 | 8 | 1 | 4 |
Temp °C | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 | 27 | 27 | 26 | 23 | 26 | 26 |
Feels °C | 24 | 25 | 23 | 22 | 23 | 22 | 21 | 22 | 22 | 24 | 24 | 25 | 25 | 27 | 26 | 26 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | S 17 | S 16 | S 16 | S 15 | SE 12 | SSE 13 | S 12 | S 12 | S 11 | E 14 | S 12 | S 12 | SSW 12 | ENE 13 | ENE 12 | ENE 12 | ENE 13 | ENE 12 | SW 14 |
364 | 422 | 318 | 275 | 152 | 361 | 446 | 480 | 363 | 711 | 529 | 650 | 569 | 1610 | 1485 | 1697 | 1787 | 1581 | 2111 | |
Swell 2 Height (m) Direction Period (s) | S 10 | SSE 10 | S 11 | E 13 | S 15 | S 14 | E 14 | E 14 | E 14 | S 11 | SSW 17 | SSE 10 | N 11 | SSW 11 | SSW 12 | SSW 11 | SW 14 | SW 14 | ENE 11 |
35 | 20 | 40 | 123 | 209 | 101 | 334 | 357 | 553 | 367 | 117 | 20 | 9 | 353 | 518 | 341 | 1115 | 1363 | 1162 | |
Swell 3 Height (m) Direction Period (s) | SW 14 | SW 14 | E 14 | SE 14 | E 13 | SW 13 | SW 18 | SW 18 | SW 13 | N 11 | NNE 10 | NNE 10 | NNE 9 | SW 16 | SSW 19 | SW 14 | SSW 17 | SSW 17 | SSW 15 |
51 | 30 | 66 | 103 | 162 | 7 | 12 | 12 | 26 | 10 | 20 | 19 | 15 | 255 | 271 | 248 | 367 | 516 | 892 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | E 8 | ENE 8 | ENE 7 | ENE 8 | ENE 7 | ENE 14 | ENE 13 | ENE 13 | — | — | — | — | — | — |
527 | 520 | 502 | 711 | 456 | 717 | 623 | 543 | 540 | 417 | 1846 | 1804 | 1930 | — | — | — | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 30 | 39 | 44 | 129 | 148 | 127 | 127 | 39 | 127 | 31 | 30 | 32 | 1 | 1 | 1 | 6 | 0 | 1 | 45 |
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.










