Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 7 pm 04 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.0° C
0.5° 

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


Rockpiles surf forecast from 5 Aug 2026:

  • Most powerful swell: Wednesday 12 Aug, 2AM (local time) - 2.5ft (0.7m), 20s period, S swell with 365 kJ wave energy.

Best Forecast Surf Conditions for Rockpiles this week:

The most powerful waves expected at Rockpiles in the next 16 days are 0.7m 20s and forecast to arrive on Wednesday (Aug 12) 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 1.4m 6s period and expected on Friday (Aug 07) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 2AM (Wed 12th Aug)2.5ft (0.7m) 20s

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


The Lowdown

Alright crew, Rusty here with the lowdown on Rockpiles for the next couple of weeks. Gotta be straight with you – this forecast is a rough one. The whole 16-day window is full of "poor surf conditions" or "marginal" calls, even when there's plenty of water moving. The big problem is that onshore wind is gonna be a constant pain, and the swell direction is mostly from the ENE, which ain't its best. Rockpiles wants it from the SSE to really work. So, we're looking at a long stretch of messy, unappealing surf.

The first real chance to even think about paddling out doesn't come until Wednesday, August 5th, but even then, it's weak. We're talking about a 4ft swell from the ENE with a 10-second period, and the combined energy is only 347 (weak). Winds are a cross-off 16 mph, so it's not completely blown out, but the report calls it "marginal" and gives it a score of 1. That's not a recommendation, that's a warning. The water temp is about average for the time of year.

Thursday the 6th and Friday the 7th are a complete write-off. Swell drops to 1ft from the SSW and SW, with a crazy long 21-second period on Friday morning. That's a lot of energy for such a tiny wave – it'll just be a slow, fat bump. The combined energy is moderate (151 to 213), but it's useless for riding.

The weekend of August 8th and 9th sees a jump in size to 6ft, but it's short-period windswell from the ENE (6-7 seconds), and the wind is up to 22 mph. The energy numbers are climbing into the moderate range (501 to 595), but the wind is a strong cross-off. This is the kind of slop that makes you question your life choices. Look, this setup is more interesting for a kite surfer than a paddle surfer.

Then the second week is where it gets proper chunky, but also more frustrating. From Monday, August 11th, through to the end of the window, the swell builds from 4ft up to a massive 10ft by Tuesday, August 19th. The combined energy goes through the roof – we're talking 843, then 934, and finally hitting 1478 and 1537 on the 18th and 19th. That's strong to very strong energy. The problem is, it's still mostly short-period ENE windswell, and the wind is a relentless 19-28 mph cross-off. The wave state is always "clean" in the sense of no rain, but it's going to be a choppy, bumpy, wind-blown mess. The best score you get for any of this is a 3 on the morning of August 20th, when the wind drops to a moderate 12 mph. That's the only faint glimmer of hope, but with a 8ft swell from the ENE, it's gonna be a tough, drifty paddle.

So, the honest truth? There are no true standouts here. Nothing is worth a dedicated trip. If you're desperate for a session, the least worst options are the morning of August 20th, when the wind is lightest, or maybe the afternoon of August 18th when the energy is huge (1499) and the wind is a "fresh breeze" rather than a "strong breeze." But with 10ft waves and a poor direction, that's expert-only territory.

For the rest of the time, save your energy. The forecast is poor, and it tends to stay that way for a while here when the trades are howling.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Tue night, min 24°C on Thu night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri night). Mainly fresh winds.

Wednesday
5
Thursday
6
Friday
7
Saturday
8
Sunday
9
Monday
10
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
1
1
1
0
0
0
0
0
0
1
1
0
0
1
1
1
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
1.3
ENE
10
1.2
ENE
10
1.1
ENE
9
1.3
ENE
9
0.4
SSW
14
0.4
SSW
14
0.5
SW
14
0.4
SW
21
0.4
SW
20
0.4
SSW
19
1.7
ENE
6
1.6
ENE
7
1.5
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
Wave Graph
Metric surfscale
Energy kJ
358
253
203
238
81
80
102
115
99
148
226
227
212
289
305
302
286
261
215
Wind (km/h)
20
ENE
25
ENE
20
ENE
20
ENE
20
ENE
25
ENE
20
ENE
30
ENE
25
ENE
30
ENE
35
ENE
30
ENE
30
ENE
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
25
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
High Tide
10:11AM0.53m
8:07PM0.29m
11:24AM0.60m
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
Low Tide
2:23AM0.03m
5:19PM0.27m
3:10AM0.03m
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
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clear
part cloud
part cloud
clear
clear
part cloud
part cloud
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part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:05
6:05
6:07
6:07
6:07
6:07
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:07
7:06
7:06
7:05
7:05
 mm
Temp °C
26
26
26
25
25
26
25
25
26
25
26
26
25
25
26
25
26
26
25
Feels °C
27
26
25
25
26
25
25
23
24
24
23
23
23
24
24
23
26
25
24
  • 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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