Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 1 pm 06 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.0° C
0.4° 

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


Rockpiles surf forecast from 7 Aug 2026:

  • Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4ft (1.2m), 16s period, S swell with 762 kJ wave energy.

Best Forecast Surf Conditions for Rockpiles this week:

The most powerful waves expected at Rockpiles in the next 16 days are 1.2m 16s and forecast to arrive on Thursday (Aug 13) 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 1.5m 6s period and expected on Wednesday (Aug 12) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Thu 13th Aug)4ft (1.2m) 16s

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


The Lowdown

Alright folks, Rusty here. Let’s have a look at the outlook for Rockpiles over the next couple of weeks. It’s a reef break, pretty consistent, and it takes a south-southeast swell best. The water temp is sitting at a normal 81°, nothing unusual there for this time of year.

Right off the bat, there’s a bit of a flat spell. For the first few days, from Thursday the 6th through to Friday the 7th, we’ve got tiny swell. You’re looking at a weak 1 ft from the south-southwest with moderate cross-off breezes. The wave energy is pretty low (145), so honestly, don’t bother paddling out. The forecast is calling it poor, and I agree.

Things start to pick up a little from Saturday the 8th into the middle of the following week, but it’s a mixed bag. The swell jumps to 5 ft to 6 ft from the east-northeast, but the period is short, around 6 to 8 seconds, meaning weak, chop-prone waves. The wind stays cross-off, which is okay, but the energy, though moderate (between 476 and 624), is just producing messy, marginal waves. The conditions are "marginal at best," and the calls for the 8th through the 11th are mainly "questionable tide conditions" or "poor." You could maybe find a rogue wave, but it’s not worth getting excited about.

Now, here is the one stand-out window in the whole forecast. Wednesday the 12th and Thursday the 13th of August. The swell switches up, dropping in height to around 3 ft to 4 ft, but the period stretches out to 15 to 18 seconds from the south. That’s proper long-period groundswell. The combined energy is strong, hitting between 833 and 924. This is the sort of energy that will wrap nicely into a reef like Rockpiles. The wind stays a moderate cross-off, so expect clean, lined-up waves. This is the best on offer, without a doubt. A reef break with that long-period south swell and cross-off wind is a recipe for some tidy, rippable walls. Just keep an eye on the tide.

After that little burst of quality, we slip back into less ideal stuff. Friday the 14th through Tuesday the 18th of August, the swell size climbs again, between 7 ft and 8 ft, but it’s back to that short-period east-northeast windswell (6 to 8 seconds). The energy is still strong numerically (up to 879), but the waves will be lumpy and unruly. At that size with those conditions, Rockpiles could get pretty gnarly and is definitely only for the experts who know what they’re doing. The winds are stronger too, a stiff to strong breeze out of the east-northeast, so it'll be a bit of a battle.

The final days (19th of August to the 21st of August) see the size drop back down to a smaller, cleaner-looking long-period swell from the southwest, with moderate energy (415 up to 734). It’s still rated as marginal, so not the main event, but a better option than the big messy stuff.

If you only have one window to make a move, target that Wednesday 12th and Thursday 13th south swell. That’s your gold.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Thu afternoon, min 25°C on Thu night). Mainly fresh winds.

Days 5-7 Weather Summary

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

Thu
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
1
0
0
0
0
1
1
1
1
1
1
1
0
0
1
1
1
1
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.4
SSW
14
1
ENE
8
0.4
SW
21
0.4
SW
20
1.4
ENE
6
0.5
SW
18
1.6
ENE
7
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.8
ENE
7
1.6
ENE
7
1.5
ENE
8
1.5
ENE
7
1.4
ENE
7
0.8
SSW
14
0.6
S
20
0.9
S
18
0.9
S
18
1.2
S
16
Wave Graph
Metric surfscale
Energy kJ
80
107
115
99
148
183
232
278
261
334
340
292
244
215
188
269
276
509
498
762
Wind (km/h)
25
ENE
20
ENE
25
ENE
30
ENE
30
ENE
35
ENE
35
ENE
30
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
ENE
30
ENE
25
ENE
25
ENE
35
ENE
30
ENE
20
ENE
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
cross-off
cross-off
High Tide
9:30PM0.22m
12:27PM0.67m
11:32PM0.19m
1:22PM0.73m
00:59AM0.19m
2:10PM0.78m
2:02AM0.22m
2:54PM0.80m
2:55AM0.26m
3:35PM0.79m
3:43AM0.31m
4:13PM0.75m
4:30AM0.36m
Low Tide
7:39PM0.21m
4:08AM0.02m
8:34PM0.16m
5:14AM0.01m
9:09PM0.12m
6:20AM-0.01m
9:40PM0.08m
7:20AM-0.02m
10:10PM0.06m
8:15AM-0.02m
10:40PM0.05m
9:08AM-0.00m
11:08PM0.04m
part cloud
part cloud
clear
part cloud
part cloud
clear
clear
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:07
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:06
7:06
7:05
7:05
7:04
7:02
 mm
Temp °C
26
25
26
26
25
26
26
25
25
26
25
26
26
26
26
27
25
26
26
26
Feels °C
24
25
25
24
24
23
23
23
23
24
24
26
25
25
25
26
24
23
23
25
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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.

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