Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 7 pm 09 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.2° C
0.6° 

Rockpiles surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.


Rockpiles surf forecast from 10 Aug 2026:

  • Best quality surf: Sunday 16 Aug, 11PM (local time) - 21ft (6.5m), 14s period, ENE swell with cross-shore winds.
  • Most powerful swell: Monday 17 Aug, 2AM (local time) - 25ft (7.5m), 13s period, ENE swell with 17,935 kJ wave energy.
  • Next surfable swell (1★+): Sunday 16 Aug, 2AM (local time) - 10ft (3.0m), 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 (Aug 16) at 2AM. The primary swell is predicted to be 3.0m and 12s period with a secondary swell of 0.7m and 13s. Another secondary swell of 0.3m and 18s is also forecast. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Rockpiles in the next 16 days are 7.5m 13s and forecast to arrive on Monday (Aug 17) 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 1.4m 6s period and expected on Wednesday (Aug 12) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Sun 16th Aug)10ft (3.0m) 12s
Best Surf11PM (Sun 16th Aug)21ft (6.5m) 14s
Most Powerful 2AM (Mon 17th Aug)25ft (7.5m) 13s

Table - best surf conditions forecast for Rockpiles over the next 16 days.


The Lowdown

Alright folks, Rusty here. Let’s have a look at what’s on the cards for Rockpiles. It’s a bit of a slow start, to be honest, so don’t be in a rush to grab your board just yet.

For the first few days, we’re looking at a pretty flat spell. The swell’s running small and short-period, mostly around 4ft to 5ft from the ENE with a weak period of just 8 seconds, and the wind is a fresh cross-offshore breeze. It’s clean, sure, but the wave energy is weak (around 400-500), and the conditions are just marginal. Nothing worth getting excited about from Sunday the 9th through to Tuesday the 12th.

There’s a subtle shift starting Wednesday morning, the 12th. Swell swings around to the south, dropping in height to about 3ft, but the period jumps up to 18 seconds. That’s proper groundswell energy, and you can feel it in the combined energy reading of 903. The water temp is sitting at 27°, with a tiny anomaly of 0.5°, so pretty average for this time of year. The wind stays cross-offshore from the ENE, keeping things clean, but the wave heights are small. The surf is still marginal through Thursday and Friday the 14th. On Friday afternoon, the swell picks up a bit to 6ft from the ENE, but the period drops back to 8 seconds.

Now, here’s where it gets interesting. For Saturday the 15th, the swell really starts to build. The morning sees 10ft from the ENE with a 12-second period, and the wave energy surges to 2345 – that’s solidly in the moderate range. By the afternoon, it’s 12ft at 13 seconds. This is getting big, and with those sizes, definitely expert territory. The wind is still a fresh cross-offshore from the NE. It’s not quite perfect yet, but the potential is there.

The standout session, and the one you should circle on your calendar, is Sunday morning the 16th. That’s where it all comes together. We’re looking at a pumping 15ft from the ENE with a 13-second period. The combined energy hits 6695. That’s serious power. And the best part? The wind goes light offshore from the north at just 9 mph. Glassy, clean, proper conditions for the experts. This is a real treat. The swell direction from the ENE isn't a perfect match for Rockpiles’ optimum SSE direction, but with that much energy and offshore wind, the reef will still offer some memorable waves. This is without a doubt the best on offer in the whole 16-day window.

After that peak, the surf drops away quickly. Sunday afternoon the 16th sees a tiny 2ft S swell, and from Monday the 17th onwards it’s back to small, short-period windswell from the ENE with onshore or cross-offshore winds. The wave energy drops and the quality fades. There’s a long gap of nothing really worthwhile through the rest of the month, with just small, poor surf conditions all the way through to the end.

So, to wrap it up: the first week is a write-off. The second week has one absolute beauty on Sunday morning the 16th with 15ft and light offshore winds, but only for the experts. After that, we’re back to a flat spell. Keep your eye on that Sunday morning, and be ready, because the rest of the window is quiet.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 27°C on Mon morning, min 25°C on Sun night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Thu morning, min 25°C on Wed night). Mainly fresh winds.

Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
Saturday
15
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
0
0
1
0
1
1
1
1
1
1
1
1
1
1
2
2
2
5
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.6
ENE
7
1.3
ENE
8
1.4
ENE
7
1.4
ENE
7
0.6
SSW
14
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1
S
16
1
S
16
1.2
S
15
1.1
S
15
2.1
ENE
7
2
ENE
8
2.4
ENE
8
2.5
ENE
8
2.5
ENE
11
3
ENE
12
Wave Graph
Metric surfscale
Energy kJ
252
196
199
214
165
269
276
509
498
520
501
662
537
456
462
691
936
1815
3045
Wind (km/h)
30
ENE
30
ENE
30
ENE
25
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
30
ENE
30
ENE
35
NE
30
NE
35
ENE
30
ENE
25
NE
30
NE
35
NE
25
NNE
Wind State
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
off
High Tide
2:02AM0.22m
2:54PM0.80m
2:55AM0.26m
3:35PM0.79m
3:43AM0.31m
4:13PM0.75m
4:30AM0.36m
4:48PM0.69m
5:17AM0.40m
5:22PM0.62m
6:06AM0.44m
5:54PM0.53m
Low Tide
9:40PM0.08m
7:20AM-0.02m
10:10PM0.06m
8:15AM-0.02m
10:40PM0.05m
9:08AM-0.00m
11:08PM0.04m
9:58AM0.03m
11:36PM0.04m
10:49AM0.08m
00:03AM0.04m
11:43AM0.14m
00:30AM0.05m
part cloud
clear
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:05
7:05
7:04
7:02
7:02
7:01
7:00
 mm
Temp °C
26
27
27
26
26
27
25
26
26
25
27
27
25
26
26
26
27
27
25
Feels °C
26
26
25
25
25
25
24
24
24
23
24
24
23
23
22
23
25
26
23
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Rockpiles:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

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.

Nearest locationNearest