Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 7 pm 31 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.0° 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 1 Aug 2026:

  • Best quality surf: Tuesday 4 Aug, 2PM (local time) - 5ft (1.5m), 11s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Saturday 1 Aug, 11AM (local time) - 10ft (3.0m), 8s period, E swell with 1,314 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 4 Aug, 2PM (local time) - 5ft (1.5m), 11s 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 Tuesday (Aug 04) at 2PM. The primary swell is predicted to be 1.5m and 11s period with a secondary swell of 0.4m and 12s. 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 3.0m 8s and forecast to arrive on Saturday (Aug 01) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Tue 4th Aug)5ft (1.5m) 11s
Best Surf 2PM (Tue 4th Aug)5ft (1.5m) 11s
Most Powerful11AM (Sat 1st Aug)10ft (3.0m) 8s

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


The Lowdown

Alright folks, Rusty here. Let’s talk about the next 16 days. We’re looking at a pretty frustrating stretch overall, with no clear standout sessions. The best of what’s on offer is super marginal, and we’ve got long gaps of poor or no-go conditions. The main spot on the radar is Rockpiles.

First up, the water temp is sitting about average for the time of year, nothing to write home about.

The first real chance of anything comes on Saturday, August 3rd, and even then it’s a struggle. The swell is around 6 ft from the ENE with a short 8-second period, and the combined energy is moderate (553). Wind is a cross-off fresh breeze, so it’s clean but not ideal. By Monday afternoon, August 5th, we get a tiny window: swell drops to 4 ft from the ENE, period 9 seconds, and the wind goes near glassy with a slight air from the NE, making for clean waves. The energy is weak (309). It’s surfable but nothing to get excited about.

Then things go quiet and poor for a long stretch. From around August 7th through to August 11th, conditions are mostly poor with strong cross-off winds and messy, short-period ENE swell. On August 10th, there’s a hint of a longer-period SSW swell (16 seconds), but it’s tiny at 2 ft and the wind is up, so it’s marginal at best. The energy reading is moderate (502) but the size just isn’t there.

The second week doesn’t offer much hope either. Around August 12th and 13th, we see a shift to S groundswell with periods up to 19 seconds, but the wave heights are only 2 ft to 3 ft. The energy is moderate (627-733) and the wind stays cross-off fresh breeze. That combo means the swell is too small and the wind is too strong for any quality. For a deep-water reef like Rockpiles, that long-period energy would be great if it had size, but it doesn’t. It’s a tease.

Honestly, the only session that might be worth a paddle is Monday afternoon, August 5th, at Rockpiles. The swell is tiny (4 ft, ENE, 9s) but the glassy wind makes it clean, and the combined energy is weak (309). It’s not a standout, just the least bad option. For the rest, you’re looking at a whole lot of poor conditions and strong winds. If you’re a kite surfer, some of those windy days might be more interesting than paddle surfing.

That’s the story – a long, flat, and windy outlook. Fingers crossed the forecasts change.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Sat morning, min 25°C on Fri night). Winds decreasing (strong winds from the ENE on Fri night, moderate winds from the NE by Sun night).

Days 5-7 Weather Summary

Light rain (total 3mm), mostly falling on Wed afternoon. Warm (max 27°C on Tue afternoon, min 25°C on Mon night). Wind will be generally light.

Saturday
1
Sunday
2
Monday
3
Tuesday
4
Wednesday
5
Thursday
6
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
1
0
1
1
1
1
2
3
1
1
2
2
1
1
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
3
E
8
3
E
8
2.5
ENE
8
3
ENE
8
2.3
ENE
8
2.2
ENE
8
2.2
ENE
8
1.7
ENE
8
1.5
ENE
8
1.4
ENE
8
1.5
ENE
11
1.5
ENE
11
1.3
ENE
11
1.2
ENE
10
1.1
ENE
9
0.9
ENE
8
0.4
SSW
14
1
ENE
8
0.5
SW
14
Wave Graph
Metric surfscale
Energy kJ
1178
1314
893
1026
758
642
612
394
313
277
515
476
372
253
184
113
82
127
102
Wind (km/h)
45
ENE
45
ENE
40
ENE
40
ENE
35
ENE
35
ENE
30
ENE
25
ENE
30
NE
20
ENE
15
ENE
15
NE
15
ENE
10
E
5
NE
10
ENE
5
NNW
20
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
cross-off
cross-off
glassy
cross-off
cross-off
High Tide
5:57AM0.34m
5:55PM0.59m
6:49AM0.38m
6:24PM0.52m
7:47AM0.42m
6:55PM0.44m
8:56AM0.47m
7:27PM0.36m
10:11AM0.53m
8:07PM0.29m
11:24AM0.60m
9:30PM0.22m
Low Tide
00:22AM0.06m
11:14AM0.11m
00:48AM0.05m
12:06PM0.16m
1:15AM0.04m
1:14PM0.22m
1:46AM0.04m
2:52PM0.27m
2:23AM0.03m
5:19PM0.27m
3:10AM0.03m
7:39PM0.21m
4:08AM0.02m
part cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
part cloud
thunderstorm
part cloud
thunderstorm
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:03
6:05
6:05
6:05
6:05
6:05
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:09
7:09
7:08
7:08
7:07
7:07
7:07
 mm
2
1
Temp °C
25
26
26
25
26
26
25
26
26
25
26
27
26
27
27
26
26
26
26
Feels °C
21
21
22
22
23
23
22
24
24
24
27
28
28
30
30
28
30
27
27
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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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