
Surf Forecasts:
Rockpiles surf forecast from 5 Aug 2026:
- Most powerful swell: Wednesday 12 Aug, 2AM (local time) - 2.5ft (0.7m), 20s period, S swell with 365 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 0.7m 20s and forecast to arrive on Wednesday (Aug 12) 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 1.4m 6s period and expected on Friday (Aug 07) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 12th Aug) | 2.5ft (0.7m) 20s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright crew, Rusty here with the lowdown on Rockpiles for the next couple of weeks. Gotta be straight with you – this forecast is a rough one. The whole 16-day window is full of "poor surf conditions" or "marginal" calls, even when there's plenty of water moving. The big problem is that onshore wind is gonna be a constant pain, and the swell direction is mostly from the ENE, which ain't its best. Rockpiles wants it from the SSE to really work. So, we're looking at a long stretch of messy, unappealing surf.
The first real chance to even think about paddling out doesn't come until Wednesday, August 5th, but even then, it's weak. We're talking about a 4ft swell from the ENE with a 10-second period, and the combined energy is only 347 (weak). Winds are a cross-off 16 mph, so it's not completely blown out, but the report calls it "marginal" and gives it a score of 1. That's not a recommendation, that's a warning. The water temp is about average for the time of year.
Thursday the 6th and Friday the 7th are a complete write-off. Swell drops to 1ft from the SSW and SW, with a crazy long 21-second period on Friday morning. That's a lot of energy for such a tiny wave – it'll just be a slow, fat bump. The combined energy is moderate (151 to 213), but it's useless for riding.
The weekend of August 8th and 9th sees a jump in size to 6ft, but it's short-period windswell from the ENE (6-7 seconds), and the wind is up to 22 mph. The energy numbers are climbing into the moderate range (501 to 595), but the wind is a strong cross-off. This is the kind of slop that makes you question your life choices. Look, this setup is more interesting for a kite surfer than a paddle surfer.
Then the second week is where it gets proper chunky, but also more frustrating. From Monday, August 11th, through to the end of the window, the swell builds from 4ft up to a massive 10ft by Tuesday, August 19th. The combined energy goes through the roof – we're talking 843, then 934, and finally hitting 1478 and 1537 on the 18th and 19th. That's strong to very strong energy. The problem is, it's still mostly short-period ENE windswell, and the wind is a relentless 19-28 mph cross-off. The wave state is always "clean" in the sense of no rain, but it's going to be a choppy, bumpy, wind-blown mess. The best score you get for any of this is a 3 on the morning of August 20th, when the wind drops to a moderate 12 mph. That's the only faint glimmer of hope, but with a 8ft swell from the ENE, it's gonna be a tough, drifty paddle.
So, the honest truth? There are no true standouts here. Nothing is worth a dedicated trip. If you're desperate for a session, the least worst options are the morning of August 20th, when the wind is lightest, or maybe the afternoon of August 18th when the energy is huge (1499) and the wind is a "fresh breeze" rather than a "strong breeze." But with 10ft waves and a poor direction, that's expert-only territory.
For the rest of the time, save your energy. The forecast is poor, and it tends to stay that way for a while here when the trades are howling.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Tue night, min 24°C on Thu night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri night). Mainly fresh winds. | ||||||||||||||||||
Wednesday 5 | Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | ||||||||||||||
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 10 | ENE 10 | ENE 9 | ENE 9 | SSW 14 | SSW 14 | SW 14 | SW 21 | SW 20 | SSW 19 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||
358 | 253 | 203 | 238 | 81 | 80 | 102 | 115 | 99 | 148 | 226 | 227 | 212 | 289 | 305 | 302 | 286 | 261 | 215 | |
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 |
High Tide | 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 | 2:23AM0.03m | 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 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | |
7:07 | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 27 | 26 | 25 | 25 | 26 | 25 | 25 | 23 | 24 | 24 | 23 | 23 | 23 | 24 | 24 | 23 | 26 | 25 | 24 |
Swell 1 Height (m) Direction Period (s) | ENE 10 | ENE 10 | SSW 15 | SSW 14 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 17 | SSW 12 | SSW 16 | SSW 15 | SSW 15 | SSW 15 |
358 | 253 | 88 | 82 | 45 | 42 | 32 | 21 | 73 | 107 | 113 | 101 | 99 | 159 | 86 | 198 | 184 | 176 | 186 | |
Swell 2 Height (m) Direction Period (s) | SSW 11 | SSW 11 | SSW 11 | SSE 12 | SSW 14 | SSW 14 | SW 14 | SSW 14 | SW 20 | SSW 19 | SW 18 | SW 18 | SW 18 | SSW 13 | SSW 16 | SSW 12 | SSW 12 | SSE 9 | SSE 9 |
47 | 38 | 39 | 48 | 81 | 80 | 102 | 77 | 99 | 148 | 162 | 154 | 150 | 96 | 102 | 56 | 56 | 34 | 32 | |
Swell 3 Height (m) Direction Period (s) | SW 15 | SSE 13 | SSE 12 | SSW 10 | SSE 11 | S 11 | SSE 11 | SW 21 | S 11 | NE 11 | SSE 10 | SSE 10 | NE 9 | SSE 10 | SSW 18 | SSE 10 | SSE 10 | SSW 11 | SSW 11 |
57 | 56 | 49 | 19 | 25 | 22 | 40 | 115 | 20 | 30 | 18 | 19 | 27 | 19 | 102 | 18 | 37 | 25 | 23 | |
Wind waves Height (m) Direction Period (s) | — | — | ENE 9 | ENE 9 | ENE 6 | ENE 6 | ENE 5 | ENE 5 | ENE 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
— | — | 203 | 238 | 68 | 57 | 32 | 40 | 63 | 122 | 226 | 227 | 212 | 289 | 305 | 302 | 286 | 261 | 215 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 30 | 1 | 30 | 38 | 38 | 30 | 30 | 33 | 30 | 30 | 30 | 30 |
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.











