Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 7 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
27.2°C
0.2° 

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


Rockpiles surf forecast from 6 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 12s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,757 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 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 (Sep 06) at 11PM. The primary swell is predicted to be 2.2m and 12s period with a secondary swell of 1.4m and 14s. 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 14s and forecast to arrive on Tuesday (Sep 08) 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 1.9m 11s period and expected on Tuesday (Sep 08) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 6th Sep)7ft (2.2m) 12s
Best Surf11PM (Sun 6th Sep)7ft (2.2m) 12s
Most Powerful 2AM (Tue 8th Sep)10ft (3.0m) 14s

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


The Lowdown

Alright crew, Rusty here. Let’s break down what’s happening at Rockpiles for the next couple of weeks. Truth be told, it’s a bit of a slow burn for a while, and we gotta be patient to find the good ones.

Water temp is 81°, which is just about average for this time of year, nothing crazy.

The first few days, from Saturday the 5th and into Sunday the 6th, are pretty lackluster. We’ve got some swell in the 6-7ft range, but the energy is weak (2350 and 1764), and a fresh 30 km/h cross-offshore wind is keeping things reasonably clean but not offering much push. It’s a ‘maybe’ session, not a ‘must-do’.

Monday the 7th brings a serious kick of energy, with the combined swell energy hitting 4341. That’s a solid, moderate push, and the swell is up to 8ft from the ENE with a 13-second period. But, the wind swings onshore from the east, creating a cross-shore chop. It’s going to be a bit of a messy, raw power day. Tuesday the 8th is a full washout. That 10ft SW swell with a fresh south wind straight onshore is just ugly. I’d stay on the beach for that one.

From Wednesday the 9th all the way through the next week, it dies right down. We’re talking small, weak surf, generally less than 5ft. The energy numbers are pretty sad (in the 400-800 range), and while the cross-off winds keep it clean, there’s just no oomph. It’s a whole lot of nothing for a while.

Now, let’s talk about the one that could be special. Friday the 18th. A new, long-period SSW groundswell is due. The period is up at 18 seconds – that’s real, deep ocean energy. Swell heights are around 4-4ft, but the energy reads a solid 1047, which is good for that size. The wind is a clean 25 km/h cross-offshore from the NE. This is the kind of swell that will wrap into Rockpiles and line up proper on the reef. The cross-off wind will groom it into clean, holding walls. It’s not a giant day, but the quality will be dramatically better than anything else we’ve seen. Mark it on the calendar. It’s a week and a half out, so it’s a promising long-range look, not a guarantee.

Before that, the weekend of the 13th and 14th is tiny and weak, and the early part of the following week is the same – small SSW swell with those clean cross-off winds, but not enough size to get your heart rate up. Thursday the 17th looks especially flat.

So, here’s the plan: save your energy this week. Monday’s got some size but it’s onshore junk. The real gem is on Friday the 18th – if that long-period SSW swell shows up as forecast, Rockpiles could be an absolutely magical, clean, lined-up reef day. Definitely one for the better surfers in the water.

Keep it salty. Rusty out.

Short Range Forecast

Heavy rain (total 23mm), heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 25°C on Sat morning). Mainly fresh winds.

Days 4-6 Weather Summary

Moderate rain (total 11mm), heaviest on Wed afternoon. Warm (max 27°C on Tue morning, min 25°C on Thu night). Mainly fresh winds.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
3
2
2
3
3
3
0
0
0
1
0
1
1
1
2
3
2
2
2
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
2.2
ENE
13
2.2
ENE
13
2.1
ENE
13
1.9
ENE
12
2
E
12
2.2
ENE
12
2.4
ENE
13
2.1
SW
14
3
SW
14
3
SW
12
1.7
ENE
11
1.3
ENE
10
0.9
SSW
14
0.9
SSW
13
1.2
ENE
8
1.4
ENE
7
1.3
ENE
7
1.6
ENE
13
1.5
ENE
12
1.4
ENE
12
1.4
ENE
11
Wave Graph
Metric surfscale
Energy kJ
1641
1654
1430
1100
1175
1338
1815
1830
3757
2368
627
356
273
257
176
208
167
828
619
530
469
Wind (km/h)
30
ENE
30
NE
20
ENE
30
ENE
25
ENE
20
ENE
25
E
20
E
30
SE
30
S
25
S
15
SSE
15
SE
15
E
20
ENE
25
ENE
20
ENE
20
ENE
20
ENE
20
ENE
20
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
12:05PM0.69m
00:18AM0.21m
1:00PM0.73m
1:21AM0.26m
1:47PM0.73m
2:09AM0.32m
2:28PM0.72m
2:51AM0.39m
3:05PM0.69m
3:32AM0.45m
3:39PM0.64m
4:11AM0.50m
4:12PM0.57m
4:51AM0.54m
Low Tide
8:03PM0.13m
5:11AM0.08m
8:31PM0.10m
6:25AM0.07m
8:57PM0.08m
7:26AM0.06m
9:22PM0.06m
8:21AM0.06m
9:46PM0.05m
9:12AM0.07m
10:10PM0.04m
10:02AM0.10m
10:33PM0.04m
clear
clear
part cloud
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
rain showers
part cloud
part cloud
clear
part cloud
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:43
6:42
6:40
6:39
6:38
6:37
 mm
4
12
2
3
2
1
2
4
1
3
Temp °C
26
27
26
26
27
26
27
27
27
27
27
27
27
27
26
26
26
26
26
26
25
Feels °C
24
26
26
25
27
27
27
28
28
27
27
29
30
30
27
26
25
26
26
26
24
  • 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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