
Surf Forecasts:
Rockpiles surf forecast from 2 Aug 2026:
- Best quality surf: Tuesday 4 Aug, 8AM (local time) - 5ft (1.6m), 11s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 2 Aug, 2AM (local time) - 8ft (2.5m), 8s period, ENE swell with 956 kJ wave energy.
- Next surfable swell (1★+): Tuesday 4 Aug, 8AM (local time) - 5ft (1.6m), 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 1.6m 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 2.5m 8s and forecast to arrive on Sunday (Aug 02) 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 1.1m 5s period and expected on Friday (Aug 07) at 8AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 8AM (Tue 4th Aug) | 5ft (1.6m) 11s |
| Best Surf | 8AM (Tue 4th Aug) | 5ft (1.6m) 11s |
| Most Powerful | 2AM (Sun 2nd Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright, this is Rusty. Let’s have a look at the 16-day run for Rockpiles. It’s a reef break, fairly consistent, and it likes a good SSE swell. But honestly, the whole window is a bit of a battle, so let’s break it down.
The first week is a bit of a grind. We’ve got size on offer right from the get-go on August 1st, with a solid 10ft swell from the east, but that’s coming with a stiff 28 mph cross-off wind. The combined energy is strong (1501), but the wind is just too messy for truly clean, lined-up waves. The period is short at 8 seconds, so it’s all a bit bumpy and choppy. That’s a theme for the first few days: size, but wind is the enemy. The water temp is 81°, which is about average for this time of year—no surprises there.
There is a slight bright spot on Tuesday, August 4th. The swell drops to a more manageable 5–5ft, still from the ENE, but the period stretches out to 11 seconds. That’s a nice groundswell, and with lighter 9–12 mph cross-off breezes that morning, it’ll be the cleanest we’ve seen so far. It’s not going to be pumping, but it’s the pick of the first week—the sort of day where you can actually enjoy a few turns without getting blown off your board. The combined energy is moderate (around 567-637).
After that, the week goes downhill. From about the 6th of August onward, swell drops away, and we get a messy mix of tiny, short-period waves and some SSW pulses that just don’t match the optimum direction for the break. The period on those SSW pulses is long, around 14-17 seconds, but the swell height is too small (1ft to 3ft) to make anything of it, and the wind stays strong and cross-off.
We hit a real quiet patch from the 6th to the 11th of August. There are a few days in there where the swell gets so small and the conditions so poor that it’s not really worth paddling out. Think of it as a lull where you’d be better off waxing your board or checking the tides.
The second week offers a glimmer of hope. Around Wednesday, August 12th, a new S swell arrives. Period jumps to 17 seconds, which is very long-period groundswell—lots of energy and push. Rockpiles is a reef, so that long period can wrap in nicely. The combined energy reads 927 to 1089, which is moderate to strong. The wind is still cross-off from the ENE at 19-22 mph, but it’s cleaner. The swell size is 3-4ft, so it’s not massive, but it’s more lined up than anything else. That’s the best window of the whole outlook. However, it’s a long-range call—promising, but not certain yet. Keep an eye on that one.
Later on, August 15th sees a bump in size again (up to 10ft from the ENE), but the period is short (8 seconds) and the wind is back to a strong 25-28 mph. That kind of setup at a reef can turn into a blown-out washing machine, only for experienced heads.
So, the absolute standout? Tuesday, August 4th. It’s the only day in the first week where the wind drops back enough to let the 2-1.6m, 11-second ENE groundswell breathe. It’s not huge, but it’s clean, and that’s worth more than a messy 10ft day.
Second best is Wednesday, August 12th. That long-period S swell (17 seconds) hitting the reef combined with manageable size is the real promise of the second week. If the wind plays ball, that’ll be the one to circle on the calendar. It’s for intermediate to advanced crew, but it could be great.
Overall, this is a spotty run. First few days have size but are wind-affected, then a flat spell, then a promising but distant window. If you can, aim for that Tuesday. Otherwise, keep your hopes for the second week and hope the long-range forecast holds.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Sat afternoon, min 24°C on Sun night). Winds decreasing (strong winds from the ENE on Sat afternoon, light winds from the ENE by Tue morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds. | |||||||||||||||||||
Sat 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | Thursday 6 | Friday 7 | ||||||||||||||
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 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | SW 14 | SW 21 | SSW 14 | ENE 7 |
Wave Graph | ||||||||||||||||||||
939 | 956 | 720 | 627 | 541 | 353 | 331 | 701 | 524 | 415 | 427 | 275 | 188 | 147 | 128 | 125 | 102 | 115 | 73 | 350 | |
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 |
High Tide | 5:55PM0.59m | 6:49AM0.38m | 6:24PM0.52m | 7:47AM0.42m | 6:55PM0.44m | 8:56AM0.47m | 7:27PM0.36m | 10:11AM0.53m | 8:07PM0.29m | 11:24AM0.60m | 9:30PM0.22m | 12:27PM0.67m | 11:32PM0.19m | |||||||
Low Tide | 00:48AM0.05m | 12:06PM0.16m | 1:15AM0.04m | 1:14PM0.22m | 1:46AM0.04m | 2:52PM0.27m | 2:23AM0.03m | 5:19PM0.27m | 3:10AM0.03m | 7:39PM0.21m | 4:08AM0.02m | 8:34PM0.16m | ||||||||
— | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:07 | — | — | |
7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 22 | 22 | 22 | 23 | 22 | 24 | 24 | 24 | 28 | 27 | 26 | 27 | 26 | 27 | 25 | 26 | 24 | 24 | 24 | 23 |
Swell 1 Height (m) Direction Period (s) | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 12 | ENE 12 | ENE 11 | ENE 11 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | SSW 14 |
196 | 194 | 246 | 192 | 125 | 84 | 108 | 701 | 524 | 415 | 427 | 275 | 188 | 147 | 128 | 125 | 39 | 22 | 20 | 75 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 19 |
123 | 131 | 133 | 67 | 56 | 53 | 49 | 56 | 46 | 53 | 47 | 47 | 88 | 82 | 81 | 80 | 102 | 77 | 73 | 148 | |
Swell 3 Height (m) Direction Period (s) | S 11 | S 11 | N 9 | N 9 | SW 13 | SW 13 | SW 13 | SSE 9 | SSW 16 | SW 16 | SW 15 | SSE 13 | SSW 11 | SSE 12 | SSE 11 | SSE 11 | SSE 11 | SW 21 | SSE 11 | S 11 |
39 | 22 | 15 | 14 | 42 | 42 | 41 | 9 | 26 | 68 | 57 | 56 | 38 | 48 | 25 | 24 | 40 | 115 | 38 | 20 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | — | — | — | — | — | NE 5 | ENE 6 | ENE 5 | ENE 6 | ENE 7 |
939 | 956 | 720 | 627 | 541 | 353 | 331 | — | — | — | — | — | — | — | — | 23 | 74 | 48 | 57 | 350 | |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 148 | 44 | 41 | 129 | 156 | 33 | 1 | 33 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 30 | 30 | 30 | 30 | 31 |
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.











