Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 1 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.4°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 25 Aug 2026:

  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 716 kJ wave energy.

Best Forecast Surf Conditions for Rockpiles this week:

The most powerful waves expected at Rockpiles in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 6s period and expected on Friday (Aug 28) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

Alright, Rusty here, and let’s break it down.

We’ve got just one spot firing up in the 16-day window: Rockpiles. It’s an advanced reef break, exposed, and fairly consistent. The water is sitting at 81°, which is normal for this time of year, so no weirdness there.

The run starts on Monday the 24th of August, and it’s a rough go. Swell is 5 ft from the east, but the period is a weak 7 seconds, and the wind is a stiff 12 mph cross-offshore. The energy is moderate (472), and it’s only a marginal call. The next few days are a slog. Tuesday the 25th and Wednesday the 26th are hammered by strong winds and messy conditions. There’s a short-lived pulse on Wednesday afternoon with a 2 ft south swell packing a very long 18-second period, and energy jumps (599), but fresh cross-off winds keep it marginal. Thursday the 27th through Saturday the 29th are all wind and poor surf. The ENE wind is relentless at 19 to 25 mph.

Now, hang in there. Monday the 31st of August sees the swell pump up to 8 ft from the ENE, with a better 8-second period, and the energy is strong (876 in the morning, hitting 1003 in the afternoon). The wind is still cross-off but lighter at 19 mph. That’s the biggest swell, but at 8 ft, it’s expert territory. The wind is still a factor.

The real standout is Monday the 7th of September. The wind drops to a gentle breeze of 9 mph in the morning and a light breeze of 6 mph in the afternoon. The swell is a solid 5 ft from the ENE, with a 9-second period, and the energy is moderate (685 and 617). The conditions are “very good,” and the wind is cross-off, keeping it glassy. Crowds are “sometimes,” so you might share a few waves, but it’s worth it. For a reef, that period is solid, and it’ll shape up nicely.

Before that, the 5th and 6th of September bring some weird weather – heavy rain and thunderstorms – but the swell is around 5 ft with a 12-second period, and the energy is strong (over 1000). The wind is mostly cross-off, but the 5th afternoon is a bit lumpy. The 6th is cleaner with a moderate breeze.

The last days, the 8th of September, the wind swings onshore from the SE, which isn’t ideal for Rockpiles. The swell stays around 5 ft, but the period is still 9 seconds, and the energy is moderate. The wind is light, but it’s onshore, so expect some chop.

Bottom line: a lot of wind and marginal surf, but that Monday the 7th of September is your ticket. If you’re an advanced surfer, that’s the day. For the rest, you’re fighting the breeze. The reef setup here loves the long-period swells we get, but the wind is the main story most days.

Rusty, out.

Short Range Forecast

Mostly dry. Warm (max 27°C on Mon afternoon, min 25°C on Mon night). Mainly strong winds.

Days 5-7 Weather Summary

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

Mon
24
Tuesday
25
Wednesday
26
Thursday
27
Friday
28
Saturday
29
Sunday
30
PM
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
0
1
1
1
2
1
0
1
0
1
1
0
1
1
1
1
1
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
E
7
1.4
ENE
8
1.9
E
7
1.6
ENE
7
1.7
E
7
0.7
SSW
14
0.7
S
18
0.7
S
19
1.1
S
17
0.9
S
16
1.1
S
16
0.8
S
14
0.9
S
14
0.8
S
13
0.7
E
14
1.6
ENE
7
1.6
ENE
7
1.4
ENE
7
1.5
ENE
7
1.7
ENE
7
Wave Graph
Metric surfscale
Energy kJ
269
251
345
261
274
218
307
351
716
427
582
260
329
229
201
230
230
186
198
262
Wind (km/h)
20
ENE
30
ENE
40
ENE
35
ENE
30
ENE
35
ENE
35
ENE
20
NE
30
ENE
30
ENE
25
ENE
35
ENE
35
ENE
35
ENE
40
ENE
35
ENE
30
ENE
30
ENE
30
NE
35
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
2:26PM0.67m
2:21AM0.29m
2:56PM0.68m
2:55AM0.33m
3:24PM0.68m
3:31AM0.37m
3:53PM0.66m
4:08AM0.41m
4:20PM0.62m
4:47AM0.46m
4:49PM0.57m
5:30AM0.50m
5:18PM0.51m
Low Tide
9:35PM0.13m
7:43AM0.06m
9:53PM0.11m
8:24AM0.05m
10:12PM0.10m
9:05AM0.06m
10:32PM0.08m
9:46AM0.07m
10:54PM0.07m
10:31AM0.10m
11:17PM0.05m
11:22AM0.14m
11:42PM0.05m
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
part cloud
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:11
6:13
6:13
6:13
6:13
6:13
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:53
6:52
6:52
6:52
6:51
6:50
6:49
 mm
Temp °C
27
26
26
26
26
26
26
25
26
26
25
26
26
25
25
26
25
26
26
26
Feels °C
26
26
23
22
24
22
23
22
24
24
24
23
23
22
23
22
22
23
23
25
  • Map Icons:
  • Break
  • 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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