
Surf Forecasts:
Rockpiles surf forecast from 4 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 8AM (local time) - 5ft (1.5m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 4 Aug, 5AM (local time) - 5ft (1.5m), 11s period, ENE swell with 591 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 8AM (local time) - 5ft (1.5m), 11s 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 Tuesday (Aug 04) at 8AM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.4m 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 1.5m 11s and forecast to arrive on Tuesday (Aug 04) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Aug 08) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 4th Aug) | 5ft (1.5m) 11s |
| Best Surf | 8AM (Tue 4th Aug) | 5ft (1.5m) 11s |
| Most Powerful | 5AM (Tue 4th Aug) | 5ft (1.5m) 11s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let's have a look at what's on the menu for Rockpiles. This is a reef setup that's fairly consistent and exposed, and it likes the swell from the SSE. We've got a 16-day window, but it's a bit of a slow burner.
We start off on Tuesday, the 4th of August, with some shoulders of swell pushing through. The morning shows a 5ft swell from the ENE, but it's a short period of 11 seconds, and the combined energy is moderate at 561. The wind is a cross-off from the ENE, which is a definite plus, keeping things clean. But the guidance tells me it's marginal, and the score is low. It's not the best start, but there's enough to get a few if you're desperate.
The next few days, Wednesday the 5th through to the end of the first week, are a write-off. The swell drops right off, and the wind stays strong and cross-off. We get a tiny 1ft groundswell from the SSW on Thursday the 6th with a very long period of 14 seconds, but the energy is weak (151). It's just not happening. There's a big gap here with no real recommendations.
Things start to look more interesting towards the second week, but you have to be patient. We see a jump in combined energy mid-week, like on Wednesday the 12th, where a 3ft S swell with a very long 18-second period kicks up a strong energy reading of 900. The wind is still a solid cross-off from the ENE, so it'll be clean. However, the swell height is small, and that long period on a reef like this could mean some straight, fast walls. It's a promising sign, but you're looking at a long-range hope.
If you're holding out for something bigger, the real power shows up around Friday the 14th of August. The swell jumps to 8ft from the ENE, but the period is a short 7 seconds. The energy is very strong (876), but the wind is howling at 22 mph from the ENE. The surf quality is rated poor. That much wind with that much short-period swell is going to be a messy, blowy mess. It's more of a kite-surfing show than a paddle-in session. The same goes for the following days right through to the 19th, with swell staying over 7ft and strong winds. The energy is high, but the conditions are just not clean for a proper surf.
To be honest, Rockpiles doesn't have a true standout in this entire 16-day window. The best on offer is probably the early morning of Tuesday the 4th, for a small, clean session, or the long-range hope of that 3ft groundswell on the 12th, but you'd be chasing a very clean, small window. The rest is either flat, too windy, or blown out.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue morning, min 25°C on Tue morning). Wind will be generally light. | Days 4-6 Weather SummarySome drizzle, heaviest during Sun night. Warm (max 26°C on Fri afternoon, min 25°C on Fri morning). Mainly fresh winds. | ||||||||||||||||||||
Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | |||||||||||||||
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 11 | ENE 11 | ENE 10 | ENE 10 | ENE 9 | ENE 9 | SSW 14 | ENE 8 | ENE 8 | SW 21 | SW 20 | SSW 19 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 |
Wave Graph | |||||||||||||||||||||
515 | 436 | 358 | 253 | 203 | 68 | 81 | 138 | 107 | 115 | 99 | 148 | 307 | 360 | 392 | 305 | 327 | 375 | 276 | 234 | 294 | |
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 | 8:56AM0.47m | 7:27PM0.36m | 10:11AM0.53m | 8:07PM0.29m | 11:24AM0.60m | 9:30PM0.22m | 12:27PM0.67m | 11:32PM0.19m | 1:22PM0.73m | 00:59AM0.19m | 2:10PM0.78m | 2:02AM0.22m | 2:54PM0.80m | 2:55AM0.26m | |||||||
Low Tide | 2:52PM0.27m | 2:23AM0.03m | 5:19PM0.27m | 3:10AM0.03m | 7:39PM0.21m | 4:08AM0.02m | 8:34PM0.16m | 5:14AM0.01m | 9:09PM0.12m | 6:20AM-0.01m | 9:40PM0.08m | 7:20AM-0.02m | 10:10PM0.06m | ||||||||
6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
— | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 26 | 26 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 25 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 27 | 25 | 26 | 25 | 27 | 26 | 25 | 25 | 23 | 24 | 24 | 24 | 22 | 23 | 24 | 24 | 23 | 25 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 11 | ENE 11 | ENE 10 | ENE 10 | SSW 15 | ENE 9 | ENE 8 | SSW 14 | SW 14 | ENE 7 | NE 7 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 17 | SSW 12 | S 16 | SSW 15 | SSW 16 | SSW 15 |
515 | 436 | 358 | 253 | 88 | 68 | 45 | 80 | 102 | 21 | 25 | 107 | 113 | 101 | 99 | 159 | 86 | 131 | 133 | 188 | 186 | |
Swell 2 Height (m) Direction Period (s) | SSW 12 | SSW 11 | SSW 11 | SSW 11 | SSW 11 | SW 14 | SSW 14 | SSE 11 | SSE 11 | SSW 14 | SSW 14 | SSW 19 | SW 18 | SSW 18 | SW 18 | SSW 13 | SSW 18 | SSW 12 | SSW 12 | SSW 12 | SE 9 |
46 | 51 | 47 | 38 | 39 | 54 | 81 | 24 | 40 | 77 | 73 | 148 | 162 | 123 | 150 | 96 | 102 | 57 | 47 | 45 | 21 | |
Swell 3 Height (m) Direction Period (s) | W 13 | SW 16 | SW 15 | SSE 13 | SSE 12 | SSE 12 | SSE 11 | SSW 10 | NNW 7 | SW 21 | SW 20 | NE 11 | SSE 10 | SSE 10 | SSE 10 | W 12 | SW 16 | SW 16 | SSE 10 | SE 10 | SSW 11 |
30 | 68 | 57 | 56 | 49 | 48 | 25 | 9 | 5 | 115 | 99 | 30 | 18 | 19 | 19 | 25 | 66 | 64 | 19 | 23 | 23 | |
Wind waves Height (m) Direction Period (s) | — | — | — | — | ENE 9 | ENE 5 | ENE 6 | ENE 8 | ENE 8 | ENE 5 | ENE 5 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 7 |
— | — | — | — | 203 | 56 | 74 | 138 | 107 | 39 | 41 | 106 | 307 | 360 | 392 | 305 | 327 | 375 | 276 | 234 | 294 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 1 | 1 | 30 | 1 | 1 | 1 | 1 | 1 | 30 | 31 | 30 | 31 | 31 | 31 | 30 | 38 | 1 | 30 | 30 | 3 |
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.











