Surf Forecasts:
Rockpiles surf forecast from 15 Aug 2026:
- Best quality surf: Sunday 16 Aug, 11PM (local time) - 6ft (1.9m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 18ft (5.5m), 11s period, ENE swell with 6,455 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 11PM (local time) - 6ft (1.9m), 8s 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 Sunday (Aug 16) at 11PM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.9m and 7s. 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 5.5m 11s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.9m 6s period and expected on Thursday (Aug 20) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Best Surf | 11PM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Most Powerful | 2AM (Sun 16th Aug) | 18ft (5.5m) 11s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Right then, let’s have a look at what’s on the table for Rockpiles over the next couple of weeks. I’ll be straight with you – it’s a rough start, but there’s a light at the end of the tunnel if you’re patient.
Right now, and for the next several days, it’s a write-off for any decent paddle surfing. We’ve got a lot of wind and messy conditions. The first recommendation we get isn’t until late in the piece. From Friday 14 August through to about Wednesday 26 August, it’s a long, frustrating gap. There’s plenty of swell in there, but it’s either blown out by strong easterly winds or it’s too small and weak. A lot of that period is just marginal at best, with the wind either howling or the swell energy being low. Honestly, some of those bigger days with the wind howling from the ENE at 31 mph look more like a kite surfer’s dream than a surfer’s.
For the first real standout, you’ve got to look way ahead. The best of the whole run shapes up on Thursday 27 August and into Friday 28 August. That’s over a week away, so treat it as promising but not locked in.
On Thursday 27 August afternoon, Rockpiles finally gets its act together. We’re looking at a solid 4ft of groundswell rolling in from the east, with a long period of 17 seconds. That’s proper energy, and the combined swell energy is strong at 1568. The wind is light from the northeast, which is cross-offshore and will keep it glassy and clean. This is a reef break, and a long period swell like this – over 15 seconds – really suits a setup like Rockpiles, giving it shape and power. It’s an advanced spot, so it’s for experienced surfers only. This is the pick of the bunch.
Friday 28 August morning is a very close second. Still 4ft of east swell, period dropping slightly to 16 seconds, and light offshore winds from the ENE. The energy is still very strong at 1592. Conditions will be clean and lined up. The afternoon sees the wind shift a little cross-shore, but it’s still manageable.
Water temp is around 81°F, which is about average for this time of year, so nothing unusual there.
To sum it up: don’t bother with the first week and a half. Wait for that window around Thursday 27 and Friday 28 August. That’s your chance for some quality, clean waves at Rockpiles.
Rusty.
Short Range ForecastHeavy rain (total 30mm), heaviest during Sun morning. Warm (max 27°C on Sun afternoon, min 25°C on Fri night). Winds decreasing (gales from the E on Sat night, light winds from the ENE by Sun night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 24°C on Wed night). Mainly fresh winds. | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 8 | ENE 8 | ENE 8 | E 10 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | S 14 | S 14 | ENE 7 | S 13 | S 13 | ENE 8 | ENE 8 | E 8 | ENE 7 | SSW 18 | SSW 17 | SW 16 |
Wave Graph | ||||||||||||||||||||
555 | 984 | 1565 | 2407 | 6455 | 1297 | 676 | 408 | 334 | 260 | 170 | 165 | 119 | 143 | 163 | 100 | 193 | 207 | 200 | 274 | |
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-on | cross | 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 | 5:22PM0.62m | 6:06AM0.44m | 5:54PM0.53m | 6:57AM0.47m | 6:24PM0.45m | 7:54AM0.49m | 6:52PM0.37m | 8:59AM0.51m | 7:16PM0.30m | 10:13AM0.53m | 11:25AM0.56m | 10:11PM0.21m | ||||||||
Low Tide | 00:03AM0.04m | 11:43AM0.14m | 00:30AM0.05m | 12:43PM0.20m | 00:58AM0.06m | 1:59PM0.25m | 1:27AM0.08m | 3:56PM0.27m | 2:01AM0.10m | 2:47AM0.12m | 8:27PM0.20m | |||||||||
— | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | |
7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — | |
mm | — | — | 1 | — | 8 | 15 | 4 | 2 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 26 | 26 | 27 | 26 | 25 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 26 |
Feels °C | 22 | 23 | 23 | 21 | 22 | 22 | 26 | 28 | 24 | 25 | 24 | 23 | 24 | 25 | 24 | 25 | 25 | 26 | 26 | 28 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 14 | ENE 9 | ENE 8 | ENE 8 | S 14 | S 14 | ENE 7 | S 13 | S 13 | S 13 | SW 16 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
411 | 306 | 225 | 168 | 184 | 1297 | 676 | 408 | 334 | 260 | 158 | 165 | 119 | 116 | 129 | 84 | 82 | 74 | 90 | 173 | |
Swell 2 Height (m) Direction Period (s) | E 11 | W 11 | W 11 | W 13 | S 18 | S 13 | SSE 7 | S 14 | S 6 | SSE 5 | S 13 | SW 17 | SW 18 | SW 18 | S 12 | SSW 16 | NE 6 | NE 7 | NNE 7 | SW 16 |
62 | 9 | 9 | 30 | 56 | 157 | 203 | 246 | 16 | 10 | 170 | 74 | 80 | 79 | 44 | 100 | 61 | 46 | 41 | 274 | |
Swell 3 Height (m) Direction Period (s) | W 12 | SSW 17 | SW 17 | S 16 | W 13 | S 16 | S 13 | SSE 6 | WSW 5 | SSW 19 | E 9 | W 13 | W 13 | W 12 | NNE 7 | S 12 | SW 16 | SSW 18 | SSW 17 | S 15 |
11 | 29 | 12 | 43 | 30 | 188 | 166 | 41 | 3 | 37 | 25 | 14 | 31 | 25 | 9 | 45 | 129 | 207 | 200 | 38 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 10 | ENE 11 | SSE 7 | SSE 7 | — | ENE 8 | ENE 7 | — | ENE 7 | ENE 7 | ENE 8 | ENE 8 | NE 7 | ENE 7 | — | — | — |
555 | 984 | 1565 | 2407 | 6455 | 222 | 334 | — | 250 | 231 | — | 164 | 99 | 143 | 163 | 44 | 193 | — | — | — | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 127 | 200 | 129 | 200 | 200 | 127 | 45 | 0 | 31 | 30 | 30 | 30 | 1 | 30 | 1 | 1 | 1 | 1 | 1 | 0 |
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.











