Surf Forecasts:
Rockpiles surf forecast from 26 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 1.1m 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 1.6m 6s period and expected on Wednesday (Aug 26) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 3.5ft (1.1m) 17s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s get into it.
We’re looking at a pretty drawn-out run at Rockpiles. Honestly, it’s a bit of a mixed bag and you’ll have to be patient. The first week or so is mostly small, short-period windswell with a persistent cross-off breeze out of the ENE. The water is sitting at 81°F which is about average for this time of year, so no surprises there.
The first real glimmer of something decent doesn’t show up until later in the second week. We’ve got a long wait. From Tuesday 25th August right through to Friday 5th September, it’s a slog. The swell is a mix of small, weak E windswell and some brief S groundswell pulses, but the quality is consistently poor or marginal. The wind stays a fresh cross-off, which is clean but not ideal. The combined energy figures are moderate, but it’s just not coming together. Don’t bother paddling out for that.
Now, look at the 6th and 7th of September. This is the standout. We see a proper jump in energy. On Saturday 5th afternoon, the combined energy starts climbing, and then Sunday 6th hits with serious numbers. The swell direction shifts to ENE, and the period stretches to 12 seconds, which is proper groundswell. The wind eases to a moderate breeze, which is a major plus for clean conditions. The only catch is that on Sunday 6th, there is a risk of thunderstorms, so keep an eye on the sky. That being said, for a reef break like Rockpiles, that long-period ENE groundswell is going to line up nicely. The swell is around 6ft, so it’s solid for experienced surfers but not too out of control. This is the best run of the outlook.
By Monday 7th, we’ve got a 6ft, 11-second ENE swell with a moderate cross-off breeze, still holding decent energy. It’s a touch smaller on Tuesday 8th, but still clean. The 9th of September looks promising too, with a 7ft, 9-second ENE swell and a light, gentle breeze – that’s about as clean as it gets.
So, to sum it up: surf the weekend of the 6th and 7th of September. That’s your window. Everything before that is a write-off. The second week is the one to watch, but remember, it’s a long-range call, so don’t bet the farm on it just yet.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 25°C on Fri night). Mainly fresh winds. | |||||||||||||||||||
Tue 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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 7 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
Wave Graph | ||||||||||||||||||||
282 | 271 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 239 | 261 | 195 | 295 | 248 | 218 | 262 | 262 | 250 | 451 | |
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 | 2:56PM0.68m | 2:55AM0.33m | 3:24PM0.68m | 3:31AM0.37m | 3:53PM0.66m | 4:08AM0.41m | 4:20PM0.62m | 4:47AM0.46m | 4:49PM0.57m | 5:30AM0.50m | 5:18PM0.51m | 6:18AM0.53m | 5:48PM0.44m | |||||||
Low Tide | 9:53PM0.11m | 8:24AM0.05m | 10:12PM0.10m | 9:05AM0.06m | 10:32PM0.08m | 9:46AM0.07m | 10:54PM0.07m | 10:31AM0.10m | 11:17PM0.05m | 11:22AM0.14m | 11:42PM0.05m | 12:22PM0.19m | 00:10AM0.05m | |||||||
— | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | — | 6:47 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 24 | 25 | 23 | 22 | 22 | 25 | 24 | 24 | 23 | 23 | 22 | 23 | 23 | 22 | 24 | 24 | 24 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | S 13 | E 13 | E 12 | S 12 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 10 |
142 | 121 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 229 | 126 | 108 | 102 | 171 | 100 | 199 | 144 | 138 | 51 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | NNE 8 | SSW 12 | NNE 7 | E 16 | E 15 | E 14 | S 13 | S 13 | E 12 | E 11 | SSW 16 | S 11 | S 11 | S 11 | S 19 |
81 | 81 | 165 | 135 | 137 | 7 | 47 | 10 | 78 | 109 | 146 | 85 | 89 | 106 | 65 | 162 | 59 | 57 | 82 | 192 | |
Swell 3 Height (m) Direction Period (s) | SSE 11 | SSW 18 | SSE 12 | SSE 6 | SSW 16 | WNW 10 | NNE 8 | E 17 | SSW 11 | SSW 19 | SW 19 | S 13 | S 12 | SSW 17 | SSW 12 | E 11 | ENE 11 | ENE 10 | ENE 10 | SW 14 |
24 | 109 | 14 | 4 | 50 | 9 | 6 | 24 | 22 | 36 | 56 | 89 | 75 | 188 | 46 | 62 | 38 | 33 | 31 | 54 | |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | E 6 | ENE 6 | E 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 |
282 | 271 | 206 | 188 | 182 | 134 | 144 | 155 | 125 | 132 | 239 | 261 | 195 | 295 | 248 | 218 | 262 | 262 | 250 | 451 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 38 | 30 | 38 | 33 | 30 | 30 | 31 | 30 | 31 | 44 | 30 | 38 | 39 | 30 | 30 | 38 | 30 | 38 | 38 | 1 |
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.











