Surf Forecasts:
Rockpiles surf forecast from 13 Sep 2026:
- Most powerful swell: Thursday 17 Sep, 5PM (local time) - 7ft (2.2m), 10s period, ENE swell with 904 kJ wave energy.
Best Forecast Surf Conditions for Rockpiles this week:
The most powerful waves expected at Rockpiles in the next 16 days are 2.2m 10s and forecast to arrive on Thursday (Sep 17) at 5PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.7m 6s period and expected on Wednesday (Sep 16) at 8PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 5PM (Thu 17th Sep) | 7ft (2.2m) 10s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
G'day, Rusty here. Let’s talk Rockpiles. This reef spot likes an SSE swell, but the next couple weeks are a bit of a mixed bag. The first several days are just too small or the wind’s cross-off, keeping things marginal at best.
There’s a long stretch of nothing special until we get to Sunday the 27th, where you’ve got 7ft of short-period ENE windswell—still not great. But then Monday the 28th morning, the wind goes glassy, dead calm, and the swell is 6ft from the ENE at 8 seconds. The combined energy is moderate (700). It’s short-period, so it won’t be perfect at the reef, but that glassy wind makes it clean and fun. That’s your best window in the whole forecast. Water temp is about average for the season.
For the rest, it’s mostly windy with ENE winds at 19 to 25 mph and swell over 5ft. That’s more of a kite-surfing setup than a paddle session. The bigger days—7ft to 8ft—are blown out and too big for beginners, only for experts who want a challenge.
So, don’t get too excited for most of it, but mark that Monday the 28th morning. That’s the one.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 25°C on Sat night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 7mm), mostly falling on Fri morning. Warm (max 27°C on Wed afternoon, min 26°C on Tue night). Mainly fresh winds. | ||||||||||||||||||
Sunday 13 | Monday 14 | Tuesday 15 | Wednesday 16 | Thursday 17 | Friday 18 | ||||||||||||||
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 9 | SW 15 | SSW 15 | SW 12 | SW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SSW 19 | SW 18 | SSW 18 | SSW 17 | ENE 7 | ENE 10 | ENE 9 | SSW 17 | SSW 17 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 84 | 107 | 84 | 38 | 86 | 227 | 224 | 392 | 384 | 470 | 455 | 541 | 377 | 417 | 904 | 740 | 622 | 580 | 585 |
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 | cross-off | cross-off |
High Tide | 5:31AM0.57m | 5:11PM0.43m | 6:14AM0.58m | 5:40PM0.36m | 7:02AM0.58m | 6:07PM0.30m | 7:59AM0.57m | 6:32PM0.25m | 9:10AM0.56m | 7:25PM0.21m | 10:27AM0.57m | 11:01PM0.21m | |||||||
Low Tide | 10:56PM0.05m | 11:45AM0.17m | 11:19PM0.06m | 12:45PM0.20m | 11:42PM0.08m | 2:03PM0.23m | 00:07AM0.11m | 4:06PM0.24m | 00:38AM0.13m | 7:14PM0.21m | 1:26AM0.16m | 7:23PM0.18m | 2:56AM0.18m | ||||||
 |  | | |  | |  | | | | | | | | |  |  | | | |
 | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 6:37 | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 3 | 3 | 1 | — |
Temp °C | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 27 | 26 | 26 | 26 | 26 | 26 | 27 | 26 |
Feels °C | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 27 | 27 | 26 | 25 | 25 | 25 | 25 | 24 | 25 | 25 | 27 | 24 |
Swell 1 Height (m) Direction Period (s) | NNE 9 | NNE 9 | NNE 9 | NE 9 | NE 8 | NE 8 | NNE 8 | SW 20 | SW 19 | SSW 19 | SW 18 | SSW 18 | SSW 17 | SW 16 | SW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 |
| kJ | 99 | 99 | 99 | 79 | 58 | 54 | 44 | 392 | 384 | 470 | 455 | 541 | 377 | 258 | 258 | 644 | 622 | 580 | 539 |
Swell 2 Height (m) Direction Period (s) | ENE 9 | SW 15 | SSW 15 | SW 12 | SW 14 | SW 22 | SW 21 | NNE 8 | E 12 | NNE 8 | E 10 | E 10 | E 10 | SSW 20 | SSW 19 | SSE 10 | SSE 9 | SSE 6 | SSE 7 |
| kJ | 84 | 107 | 84 | 38 | 49 | 227 | 224 | 36 | 68 | 32 | 72 | 69 | 94 | 149 | 210 | 9 | 8 | 8 | 20 |
Swell 3 Height (m) Direction Period (s) | SSW 13 | SW 12 | SW 12 | ENE 8 | SW 23 | SW 14 | SSW 13 | E 12 | ENE 8 | E 11 | SW 12 | SW 11 | SSW 11 | SW 11 | SW 10 | SW 10 | W 9 | S 21 | S 20 |
| kJ | 68 | 37 | 37 | 14 | 86 | 49 | 68 | 46 | 19 | 58 | 35 | 43 | 12 | 18 | 4 | 4 | 2 | 36 | 67 |
Wind waves Height (m) Direction Period (s) | — | ENE 9 | ENE 9 | ENE 4 | ENE 5 | ENE 5 | ENE 5 | ENE 5 | NE 8 | ENE 5 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 10 | ENE 9 | E 8 | ENE 8 | ENE 8 |
| kJ | — | 82 | 59 | 13 | 26 | 25 | 24 | 30 | 84 | 48 | 100 | 114 | 241 | 417 | 904 | 740 | 576 | 547 | 585 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 1 | 1 | 6 | 30 | 1 | 1 | 1 | 1 | 30 | 30 | 127 | 30 | 127 | 127 | 30 | 41 | 30 | 13 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rockpiles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.
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.
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