
Surf Forecasts:
Rockpiles surf forecast from 6 Sep 2026:
- Best quality surf: Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 12s period, ENE swell with cross-offshore winds.
- Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,757 kJ wave energy.
- Next surfable swell (1★+): Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 12s 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 (Sep 06) at 11PM. The primary swell is predicted to be 2.2m and 12s period with a secondary swell of 1.4m and 14s. 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 3.0m 14s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 11s period and expected on Tuesday (Sep 08) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 6th Sep) | 7ft (2.2m) 12s |
| Best Surf | 11PM (Sun 6th Sep) | 7ft (2.2m) 12s |
| Most Powerful | 2AM (Tue 8th Sep) | 10ft (3.0m) 14s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Alright crew, Rusty here. Let’s break down what’s happening at Rockpiles for the next couple of weeks. Truth be told, it’s a bit of a slow burn for a while, and we gotta be patient to find the good ones.
Water temp is 81°, which is just about average for this time of year, nothing crazy.
The first few days, from Saturday the 5th and into Sunday the 6th, are pretty lackluster. We’ve got some swell in the 6-7ft range, but the energy is weak (2350 and 1764), and a fresh 30 km/h cross-offshore wind is keeping things reasonably clean but not offering much push. It’s a ‘maybe’ session, not a ‘must-do’.
Monday the 7th brings a serious kick of energy, with the combined swell energy hitting 4341. That’s a solid, moderate push, and the swell is up to 8ft from the ENE with a 13-second period. But, the wind swings onshore from the east, creating a cross-shore chop. It’s going to be a bit of a messy, raw power day. Tuesday the 8th is a full washout. That 10ft SW swell with a fresh south wind straight onshore is just ugly. I’d stay on the beach for that one.
From Wednesday the 9th all the way through the next week, it dies right down. We’re talking small, weak surf, generally less than 5ft. The energy numbers are pretty sad (in the 400-800 range), and while the cross-off winds keep it clean, there’s just no oomph. It’s a whole lot of nothing for a while.
Now, let’s talk about the one that could be special. Friday the 18th. A new, long-period SSW groundswell is due. The period is up at 18 seconds – that’s real, deep ocean energy. Swell heights are around 4-4ft, but the energy reads a solid 1047, which is good for that size. The wind is a clean 25 km/h cross-offshore from the NE. This is the kind of swell that will wrap into Rockpiles and line up proper on the reef. The cross-off wind will groom it into clean, holding walls. It’s not a giant day, but the quality will be dramatically better than anything else we’ve seen. Mark it on the calendar. It’s a week and a half out, so it’s a promising long-range look, not a guarantee.
Before that, the weekend of the 13th and 14th is tiny and weak, and the early part of the following week is the same – small SSW swell with those clean cross-off winds, but not enough size to get your heart rate up. Thursday the 17th looks especially flat.
So, here’s the plan: save your energy this week. Monday’s got some size but it’s onshore junk. The real gem is on Friday the 18th – if that long-period SSW swell shows up as forecast, Rockpiles could be an absolutely magical, clean, lined-up reef day. Definitely one for the better surfers in the water.
Keep it salty. Rusty out.
Short Range ForecastHeavy rain (total 23mm), heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 25°C on Sat morning). Mainly fresh winds. | Days 4-6 Weather SummaryModerate rain (total 11mm), heaviest on Wed afternoon. Warm (max 27°C on Tue morning, min 25°C on Thu night). Mainly fresh winds. | ||||||||||||||||||||
Saturday 5 | Sunday 6 | Monday 7 | Tuesday 8 | Wednesday 9 | Thursday 10 | Friday 11 | |||||||||||||||
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 13 | ENE 13 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | SW 14 | SW 14 | SW 12 | ENE 11 | ENE 10 | SSW 14 | SSW 13 | ENE 8 | ENE 7 | ENE 7 | ENE 13 | ENE 12 | ENE 12 | ENE 11 |
Wave Graph | |||||||||||||||||||||
1641 | 1654 | 1430 | 1100 | 1175 | 1338 | 1815 | 1830 | 3757 | 2368 | 627 | 356 | 273 | 257 | 176 | 208 | 167 | 828 | 619 | 530 | 469 | |
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 | cross | cross-on | on | on | cross-on | cross-on | cross | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 12:05PM0.69m | 00:18AM0.21m | 1:00PM0.73m | 1:21AM0.26m | 1:47PM0.73m | 2:09AM0.32m | 2:28PM0.72m | 2:51AM0.39m | 3:05PM0.69m | 3:32AM0.45m | 3:39PM0.64m | 4:11AM0.50m | 4:12PM0.57m | 4:51AM0.54m | |||||||
Low Tide | 8:03PM0.13m | 5:11AM0.08m | 8:31PM0.10m | 6:25AM0.07m | 8:57PM0.08m | 7:26AM0.06m | 9:22PM0.06m | 8:21AM0.06m | 9:46PM0.05m | 9:12AM0.07m | 10:10PM0.04m | 10:02AM0.10m | 10:33PM0.04m | ||||||||
6:15 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | |
— | 6:44 | — | — | 6:43 | — | — | 6:42 | — | — | 6:40 | — | — | 6:39 | — | — | 6:38 | — | — | 6:37 | — | |
mm | — | — | — | — | 4 | 12 | 2 | 3 | 2 | 1 | 2 | 4 | 1 | 3 | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 26 | 26 | 27 | 26 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 27 | 26 | 26 | 26 | 26 | 26 | 26 | 25 |
Feels °C | 24 | 26 | 26 | 25 | 27 | 27 | 27 | 28 | 28 | 27 | 27 | 29 | 30 | 30 | 27 | 26 | 25 | 26 | 26 | 26 | 24 |
Swell 1 Height (m) Direction Period (s) | S 12 | S 12 | ENE 13 | ENE 12 | E 12 | ENE 12 | ENE 13 | SW 14 | SW 14 | SW 12 | SSW 9 | ENE 10 | ENE 8 | ENE 8 | ENE 8 | E 12 | E 12 | SW 16 | ENE 12 | ENE 12 | ENE 11 |
647 | 650 | 1430 | 1100 | 1175 | 1338 | 1521 | 1830 | 3757 | 2368 | 464 | 325 | 177 | 149 | 165 | 141 | 141 | 211 | 619 | 530 | 469 | |
Swell 2 Height (m) Direction Period (s) | SSW 18 | NNE 10 | SSW 12 | SSW 12 | SSW 12 | SW 14 | SW 12 | ENE 12 | ENE 12 | ENE 11 | ENE 11 | SSW 8 | SSW 8 | SSW 13 | E 12 | SSW 13 | SSW 12 | S 12 | SW 16 | SW 15 | SW 15 |
62 | 19 | 404 | 444 | 385 | 822 | 463 | 1360 | 1121 | 901 | 627 | 237 | 101 | 257 | 148 | 131 | 123 | 72 | 206 | 229 | 226 | |
Swell 3 Height (m) Direction Period (s) | NNE 10 | NNE 10 | SSW 16 | SSW 16 | SSW 15 | SSW 18 | SW 15 | SSW 17 | S 8 | SSW 15 | W 11 | SSW 14 | SSW 14 | SSW 8 | SSW 13 | SSW 16 | SW 18 | SW 9 | SSW 12 | SSW 11 | SSW 11 |
20 | 19 | 166 | 220 | 154 | 344 | 542 | 510 | 196 | 498 | 577 | 356 | 273 | 64 | 176 | 179 | 154 | 21 | 45 | 43 | 24 | |
Wind waves Height (m) Direction Period (s) | ENE 13 | ENE 13 | — | — | — | — | ENE 13 | SSE 8 | SSE 8 | S 10 | — | — | — | — | — | ENE 7 | ENE 7 | ENE 13 | — | — | — |
1641 | 1654 | — | — | — | — | 1815 | 221 | 345 | 832 | — | — | — | — | — | 208 | 167 | 828 | — | — | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 30 | 30 | 1 | 30 | 30 | 30 | 127 | 13 | 79 | 50 | 79 | 18 | 20 | 1 | 30 | 30 | 1 | 30 | 30 | 30 | 1 |
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.










