Surf Forecasts:
Rockpiles surf forecast from 24 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 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 (1.1m) 17s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright, surfers, Rusty here. Let me paint you a picture of what’s heading our way for the next couple of weeks.
Honestly, the start of the period is a tough one. We’re looking at a bit of a dry spell for any decent, clean waves. For the first few days, we’ve got a consistent cross-off wind from the ENE at 25 to 40 km/h, kicking up a messy, short-period swell that’s just not cooperating. The water’s warm though, sitting at a lovely 81°, which is about average for this time of year.
The first real glimmer of hope arrives on Tuesday, September 1st. We see a jump in energy with a moderate combined swell energy (1016), with the swell starting to build to 7ft from the ENE. It’s still a bit short-period at 8 seconds, so don’t expect perfection, but it’s a definite step up from the junk we’ve been dealing with. The wind is still a stubborn cross-off, which keeps things from being truly great, but it’s ridable.
The standout window looks to be around the 4th and 5th of September. On Thursday, September 3rd, we see a nice shift. The swell direction swings more E, and the period stretches out to a solid 14 seconds – that’s proper groundswell. The energy is getting strong, hitting a 1030, with a clean 3ft to 4ft on offer. This longer period will shape up nicely on the reef, though the persistent cross-off wind is still the main character.
But the real highlight, the one worth circling on your calendar, is Monday, September 7th. We’ve got *Rockpiles* set to fire. The morning starts light, with the wind easing to just 6 mph from the E, creating a light cross-shore texture. Then, in the afternoon, it turns glassy. Dead calm. The wind goes to 3 mph from the E, and the report says “glassy.” That’s the word. Swell is 5ft from the ENE with a short 8-second period, but when you have absolutely zero wind, that’s the trump card. It’ll be clean, fun, and holding some good energy (531). The difficulty is advanced, and it is a reef, so keep your wits about you.
Following that, Tuesday, September 8th shows a big pulse of energy hitting a strong 1543, with a 8ft swell from the ENE. However, the wind swings onshore from the SSE, which will likely chop it up. That one is for the experts only, and even then, it won't be pretty.
So, for the one-two punch: The absolute best on offer is the glassy Monday afternoon session on the 7th. The secondary nod goes to the longer-period groundswell running from the 3rd to the 5th, offering more consistent, better-shaped waves, even if the wind isn't perfect.
Keep an eye on the forecast, things are looking up.
Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Mon morning, min 25°C on Mon night). Mainly strong winds. | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Thu morning, min 25°C on Thu morning). Mainly fresh winds. | ||||||||||||||||||||
Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | |||||||||||||||
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) | ENE 7 | E 7 | ENE 7 | E 7 | ENE 7 | E 7 | E 7 | S 18 | S 19 | S 17 | S 16 | S 16 | S 14 | S 14 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | SSW 16 | SSW 16 | SSW 15 |
Wave Graph | |||||||||||||||||||||
200 | 262 | 232 | 445 | 293 | 270 | 226 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 268 | 307 | 306 | 273 | 171 | 162 | 199 | |
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 | cross-off |
High Tide | 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 | 4:49PM0.57m | 5:30AM0.50m | 5:18PM0.51m | ||||||||
Low Tide | 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 | 10:31AM0.10m | 11:17PM0.05m | 11:22AM0.14m | 11:42PM0.05m | ||||||||
6:11 | — | — | 6:11 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | |
— | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 26 | 26 | 26 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 25 | 26 | 26 | 24 | 22 | 24 | 22 | 23 | 22 | 24 | 24 | 23 | 23 | 23 | 22 | 22 | 22 | 23 | 24 | 23 | 25 |
Swell 1 Height (m) Direction Period (s) | E 8 | 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 | E 14 | E 13 | S 12 | SSW 16 | S 12 | SSW 15 |
68 | 156 | 127 | 85 | 142 | 121 | 215 | 307 | 351 | 716 | 427 | 482 | 260 | 329 | 225 | 142 | 171 | 102 | 171 | 98 | 199 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSE 12 | SSE 7 | SSW 16 | SSW 12 | SSW 12 | S 18 | SSW 13 | SSW 13 | NNE 8 | SSW 12 | NNE 8 | SSW 11 | E 14 | E 12 | S 13 | S 13 | E 12 | S 12 | SSW 16 | S 11 |
166 | 47 | 28 | 146 | 81 | 81 | 165 | 135 | 137 | 7 | 47 | 11 | 22 | 61 | 77 | 85 | 89 | 106 | 68 | 162 | 59 | |
Swell 3 Height (m) Direction Period (s) | SSE 12 | SE 8 | SSW 17 | SSE 12 | SSE 6 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | W 9 | SSE 6 | E 16 | E 15 | SSE 5 | SW 19 | S 13 | S 12 | SSW 17 | E 12 | E 11 | E 11 |
50 | 16 | 94 | 29 | 7 | 109 | 14 | 14 | 50 | 7 | 3 | 20 | 39 | 3 | 56 | 89 | 75 | 186 | 69 | 63 | 61 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | E 7 | ENE 7 | E 7 | ENE 7 | E 7 | E 7 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | NE 7 | NE 7 |
200 | 262 | 232 | 445 | 293 | 270 | 226 | 176 | 188 | 155 | 132 | 160 | 111 | 132 | 268 | 307 | 306 | 273 | 168 | 139 | 135 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 38 | 30 | 30 | 38 | 38 | 30 | 38 | 38 | 30 | 30 | 127 | 30 | 31 | 39 | 31 | 38 | 41 | 30 | 30 | 33 | 2 |
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.











