
Surf Forecasts:
Rockpiles surf forecast from 9 Jul 2026:
- Most powerful swell: Sunday 12 Jul, 8PM (local time) - 8ft (2.4m), 8s period, ENE swell with 654 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 2.4m 8s and forecast to arrive on Sunday (Jul 12) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 15s period and expected on Wednesday (Jul 15) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sun 12th Jul) | 8ft (2.4m) 8s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
Right, grab a coffee, let’s chat about the next couple of weeks. Honestly, the outlook for the entire 16-day window is a tough one. We’re looking at a long stretch of messy, wind-affected surf, with only a couple of genuine windows that might be worth a look. The first real opportunity doesn’t show up until the 21st of July, so there’s an ugly gap of almost two weeks of marginal to poor conditions before anything interesting happens.
The main issue is a persistent, strong cross-offshore wind from the ENE that’s going to be blowing 24 to 25 mph pretty much every day. That’s going to wreak havoc on the surface of the water. The swell is coming from the ENE too, which is the exact opposite of what this spot prefers. Rockpiles is a reef break that really wants a swell from the SSE to get its best shape, and this is just coming in wrong. On top of that, the swell period is a short, choppy 7 to 8 seconds for most of the period, which means weak, shapeless waves. The wave energy is moderate (636) through the first week, so there’s size, but it’s poor quality.
If you’re a beginner, you’ll want to stay away anyway. The swell is consistently over 5 ft, and by the 18th of July, it’s forecast to be a solid 8 ft to 10 ft, which is expert-only territory. Even then, the wind is still howling and the quality is shot. The setup looks more interesting for kite surfing than paddle surfing for the majority of this period.
Now, the only glimmer of hope comes on the 21st and 22nd of July. The wind finally drops to a moderate 15-18 mph cross-off, which is still not ideal but a hell of a lot better. And the swell direction swings around to the east. More importantly, the period jumps to 15-18 seconds. That’s proper long-period groundswell. The energy jumps up to strong (1012-1072) on the 21st and 22nd. The problem is that the swell size is small, only 2 ft to 3 ft on the 21st, and just 4 ft to 4 ft on the 22nd. A long-period swell that small on an exposed reef can be tricky, but this is the best we’ve got. The water temperature is a warm 80°F, about average for this time of year.
The standout window is the 21st of July Tuesday afternoon. The swell is tiny at 3 ft from the east, with a very long 18-second period, and the wind is down to a moderate 15 mph from the NE. It’s the most promising moment in the whole forecast. The second best would be the 22nd of July Wednesday morning, with a 4 ft east swell and a 15-second period, though the wind is a touch stronger at 18 mph. Keep in mind, this is a long-range call, so it’s promising but less certain. For now, the rest of the month is a write-off.
Rusty.
Short Range ForecastMostly dry. Warm (max 25°C on Wed afternoon, min 24°C on Wed night). Mainly strong winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 25°C on Sat afternoon, min 24°C on Sat night). Mainly strong winds. | ||||||||||||||||||||
Wed 8 | Thursday 9 | Friday 10 | Saturday 11 | Sunday 12 | Monday 13 | Tuesday 14 | |||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | |
Swell Height Map | |||||||||||||||||||||
Wave Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
Wave Graph | |||||||||||||||||||||
440 | 539 | 393 | 373 | 400 | 379 | 325 | 381 | 444 | 387 | 369 | 456 | 637 | 525 | 393 | 345 | 349 | 280 | 294 | 369 | 432 | |
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 | 10:00PM0.26m | 12:45PM0.61m | 11:18PM0.20m | 1:36PM0.69m | 00:40AM0.17m | 2:24PM0.76m | 1:50AM0.16m | 3:11PM0.80m | 2:52AM0.17m | 3:56PM0.82m | 3:49AM0.19m | 4:39PM0.80m | 4:45AM0.22m | ||||||||
Low Tide | 6:43PM0.23m | 4:48AM-0.04m | 8:17PM0.17m | 5:36AM-0.06m | 9:18PM0.12m | 6:28AM-0.08m | 10:04PM0.07m | 7:21AM-0.09m | 10:45PM0.04m | 8:13AM-0.09m | 11:23PM0.02m | 9:06AM-0.08m | 11:59PM0.01m | 9:57AM-0.04m | |||||||
— | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:56 | — | — | 5:58 | |
7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:16 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | 7:15 | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 24 | 25 | 25 | 25 | 25 |
Feels °C | 21 | 20 | 23 | 22 | 21 | 23 | 22 | 21 | 22 | 22 | 21 | 22 | 21 | 21 | 22 | 21 | 21 | 22 | 22 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | SSW 13 | S 13 | S 12 | S 12 | S 12 | S 12 | SSW 11 | SW 19 | SSW 18 | SW 18 | SW 17 | SW 16 | SW 16 | SW 16 | SW 15 | SSW 15 | SW 14 | SW 14 | SW 14 | W 15 | W 15 |
187 | 125 | 112 | 110 | 75 | 71 | 42 | 184 | 221 | 316 | 309 | 376 | 367 | 353 | 322 | 272 | 208 | 191 | 186 | 227 | 221 | |
Swell 2 Height (m) Direction Period (s) | SE 8 | W 15 | SSE 8 | W 14 | W 13 | W 13 | SW 21 | S 12 | W 14 | W 13 | W 13 | S 13 | SSE 12 | SSE 12 | SSE 12 | W 18 | W 18 | W 16 | W 16 | SSW 13 | SW 13 |
3 | 17 | 6 | 15 | 13 | 13 | 109 | 42 | 63 | 54 | 54 | 29 | 28 | 28 | 27 | 97 | 150 | 188 | 188 | 111 | 164 | |
Swell 3 Height (m) Direction Period (s) | S 18 | SE 8 | S 16 | SSE 8 | W 16 | SSW 21 | W 13 | W 13 | S 12 | S 12 | S 11 | W 12 | W 12 | W 12 | W 12 | SSE 11 | SW 18 | SSW 19 | SW 19 | SSW 17 | SW 18 |
6 | 3 | 21 | 6 | 20 | 45 | 29 | 55 | 44 | 25 | 22 | 27 | 26 | 26 | 12 | 25 | 82 | 146 | 94 | 197 | 152 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
440 | 539 | 393 | 373 | 400 | 379 | 325 | 381 | 444 | 387 | 369 | 456 | 637 | 525 | 393 | 345 | 349 | 280 | 294 | 369 | 432 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 47 | 38 | 39 | 44 | 32 | 30 | 129 | 32 | 31 | 38 | 30 | 38 | 41 | 32 | 38 | 38 | 30 | 31 | 38 | 30 | 32 |
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.











