
Surf Forecasts:
Rockpiles surf forecast from 16 Jul 2026:
- Best quality surf: Thursday 16 Jul, 2AM (local time) - 2.5ft (0.8m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 22 Jul, 11PM (local time) - 4.5ft (1.4m), 13s period, ENE swell with 576 kJ wave energy.
- Next surfable swell (1★+): Thursday 16 Jul, 2AM (local time) - 2.5ft (0.8m), 16s period with SSW 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 Thursday (Jul 16) at 2AM. The primary swell is predicted to be 0.8m and 16s period with a secondary swell of 0.9m and 7s. 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 1.4m 13s and forecast to arrive on Wednesday (Jul 22) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.3m 6s period and expected on Saturday (Jul 18) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Thu 16th Jul) | 2.5ft (0.8m) 16s |
| Best Surf | 2AM (Thu 16th Jul) | 2.5ft (0.8m) 16s |
| Most Powerful | 11PM (Wed 22nd Jul) | 4.5ft (1.4m) 13s |
Table - best surf conditions forecast for Rockpiles over the next 16 days.
The Lowdown
Hey, Rusty here. Got to be straight with you about Rockpiles – the next couple weeks are a tough beat.
We’ve got a dry spell right off the bat. No real surf until Monday, July 20th. That’s a solid four-day gap of disappointing, weak conditions. From now through Sunday, it’s all small, messy junk with cross-off winds that aren’t helping anything. Don't waste your time.
Monday the 20th is the first flicker of life, but it’s still just marginal. We’re talking about 3ft of swell from the south with a very long 16-second period. That long period gives the waves some real punch and shape, but for a reef like Rockpiles, it can make the sets a bit tricky. The wind is a moderate cross-off, so it’ll be clean. The combined swell energy is moderate (577 to 634). Still, the call is marginal – keep your expectations in check.
Tuesday the 21st and Wednesday the 22nd are more of the same story. Swell stays around 2ft to 3ft from the south or east, with the period dropping a little. The wind holds as a moderate to fresh cross-off, keeping things clean. The energy ticks up on Tuesday (845), but it’s still just that marginal zone.
Here’s where it gets interesting. The real standout window is from Thursday, July 23rd through Monday, July 27th. This is our best chance. On Thursday the 23rd, the swell jumps to 4ft to 5ft from the east-northeast. The period is a solid 11 to 12 seconds, so it’s a proper groundswell. The wind is a fresh cross-off, so the faces will be clean. The combined energy gets strong, with readings of 1104 to 1205. Friday the 24th is a bit of a hiccup with a smaller south-southwest swell, but then Saturday the 25th and Sunday the 26th fire back up hard. On Sunday the 26th, we’re looking at 4ft to 5ft of east swell with a very long 16-second period. The power is massive – combined energy readings of 1829 to 1868. This is the pinnacle of the whole forecast. Big, long-period groundswell, clean conditions. This is strictly for the experts with waves over 5ft. The wind stays a fresh cross-off, so there will be some texture, but the waves will be lined up and powerful.
Monday the 27th keeps that energy going with similar 4ft to 5ft east swell, still a long 16-second period, and combined energy around 1647. Still strong, still clean. After that, Tuesday the 28th sees the swell holding at 5ft to 5ft from the east-northeast with a 13-second period. The wind drops to a moderate breeze, making for even cleaner conditions. Energy is moderate to strong (929 to 1074). This is still a good day.
Wednesday the 29th is a weird one. The morning shows 6ft of east-northeast swell with an 11-second period, but the wind turns light cross-shore, putting some small ripples on the surface. The energy is strong (964), but it won’t be as clean. By the afternoon, it drops to a tiny 2ft, so that’s it.
From Thursday the 30th to the end on Friday the 31st, it’s back to flat and tiny. 2ft swell and weak energy (98 to 136). Totally forgettable.
The clear standout is the window from Sunday the 26th to Monday the 27th of July. That’s where you get the biggest, most powerful groundswell with long periods and clean cross-off wind. It’s for the advanced crew. Thursday the 23rd is also a solid pick for a slightly smaller, but still punchy, day.
This reef is exposed and fairly consistent, so when the energy arrives, it works. The optimum direction is SSE, and we’re getting a lot of ENE and E swell, which isn’t ideal, but with this much power, Rockpiles will still handle it. It can get crowded sometimes, especially on the best days.
It’s a waiting game this first week, but the payoff looks pretty good for a couple of sessions.
Rusty, out.
Short Range ForecastLight rain (total 3mm), mostly falling on Wed night. Warm (max 26°C on Thu morning, min 25°C on Wed night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 24°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Thursday 16 | Friday 17 | Saturday 18 | Sunday 19 | Monday 20 | Tuesday 21 | ||||||||||||||
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) | SSW 16 | SSW 16 | SSW 17 | SW 14 | ENE 7 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | S 15 | S 14 | E 14 | E 14 |
Wave Graph | |||||||||||||||||||
314 | 175 | 195 | 211 | 134 | 196 | 147 | 141 | 210 | 298 | 264 | 243 | 218 | 329 | 321 | 271 | 329 | 316 | 315 | |
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 | 5:41AM0.26m | 5:59PM0.69m | 6:41AM0.30m | 6:36PM0.61m | 7:44AM0.34m | 7:11PM0.52m | 8:53AM0.38m | 7:45PM0.43m | 10:04AM0.43m | 8:19PM0.34m | 11:13AM0.49m | 8:56PM0.27m | |||||||
Low Tide | 00:34AM0.01m | 10:49AM0.01m | 1:08AM0.01m | 11:44AM0.08m | 1:42AM0.01m | 12:46PM0.16m | 2:15AM0.02m | 2:03PM0.22m | 2:48AM0.03m | 3:52PM0.27m | 3:23AM0.04m | 6:20PM0.26m | 4:02AM0.05m | ||||||
— | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 5:58 | — | — | 6:00 | — | — | 6:00 | — | — | |
7:15 | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | |
mm | 2 | — | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 |
Temp °C | 25 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 25 | 25 | 24 | 25 | 26 | 25 | 26 | 26 | 24 |
Feels °C | 25 | 25 | 25 | 25 | 23 | 25 | 24 | 25 | 25 | 23 | 23 | 22 | 22 | 24 | 24 | 24 | 24 | 24 | 22 |
Swell 1 Height (m) Direction Period (s) | SSW 16 | NE 7 | W 14 | SW 14 | W 14 | SSW 16 | SSW 14 | SSW 13 | SSW 14 | S 12 | S 12 | SSW 13 | SSW 12 | S 16 | S 16 | S 15 | S 14 | E 14 | E 14 |
314 | 96 | 203 | 211 | 144 | 196 | 147 | 141 | 210 | 108 | 73 | 95 | 44 | 329 | 321 | 271 | 329 | 316 | 315 | |
Swell 2 Height (m) Direction Period (s) | ENE 7 | W 14 | SSW 13 | W 14 | SW 16 | W 14 | W 13 | NNE 8 | WNW 13 | W 12 | NNE 8 | S 18 | S 18 | SW 18 | E 17 | E 16 | E 14 | S 14 | S 13 |
68 | 203 | 113 | 148 | 125 | 98 | 90 | 23 | 56 | 28 | 19 | 106 | 97 | 83 | 94 | 237 | 264 | 307 | 273 | |
Swell 3 Height (m) Direction Period (s) | W 15 | SSW 16 | SSW 17 | SSW 18 | SSW 12 | SSW 12 | NNE 7 | WNW 13 | NNE 7 | SSE 9 | S 19 | W 12 | NNE 8 | W 11 | SW 18 | E 8 | SW 17 | SW 16 | SSW 26 |
212 | 175 | 195 | 60 | 55 | 55 | 18 | 57 | 9 | 8 | 66 | 25 | 25 | 10 | 81 | 28 | 72 | 68 | 224 | |
Wind waves Height (m) Direction Period (s) | — | — | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 |
— | — | 64 | 117 | 134 | 120 | 113 | 123 | 139 | 298 | 264 | 243 | 218 | 165 | 138 | 123 | 180 | 147 | 158 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 0 | 30 | 39 | 2 | 30 | 31 | 1 | 30 | 41 | 30 | 1 | 30 | 1 | 2 | 30 | 1 | 30 | 31 | 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.










