Rockpiles Surf Break

Lat Long: 21.28° N 157.84° W

Rockpiles Surf Forecast and Surf Report

Issued: 7 pm 18 Jul 2026 (local time)

Forecast update in  hr  min

Today's Rockpiles sea temperature is
26.6° C
0.3° 

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


Rockpiles surf forecast from 19 Jul 2026:

  • Most powerful swell: Thursday 23 Jul, 11AM (local time) - 6ft (1.8m), 12s period, ENE swell with 857 kJ wave energy.

Best Forecast Surf Conditions for Rockpiles this week:

The most powerful waves expected at Rockpiles in the next 16 days are 1.8m 12s and forecast to arrive on Thursday (Jul 23) 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 0.4m 7s period and expected on Sunday (Jul 19) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful11AM (Thu 23rd Jul)6ft (1.8m) 12s

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


The Lowdown

Alright, let’s break it down. We’ve only got Rockpiles on the menu – a reef break that’s fairly consistent and exposed. The ideal direction is SSE, but we’re not seeing that. Water temp is about average for the season, nothing special.

The next 16 days are a mixed bag. The wind is locked in from the ENE, a steady cross-off, which keeps the surface clean, but the swell direction is off. Lots of ENE windswell and some longer-period S and SSW groundswell, but not much SSE. The energy is there, but the quality isn’t.

First few days are a bust. Sunday, July 19, is a dud. Swell at 5 ft from the ENE, 8-second period, 469 energy – “poor surf conditions.” Zero score. Monday, July 20, morning has 5 ft ENE windswell (580 energy), afternoon drops to 3 ft from the S, 16-second period (658 energy), but still marginal. That long period S groundswell is a tease – wrong direction, questionable tide.

Tuesday, July 21, same story. 3 ft S swell, 14-second period, still marginal. Fresh breeze, small waves. This stretch from Sunday, July 19, to Wednesday, July 22, is four days of nothing.

Wednesday, July 22, afternoon has a weird spike: 2 ft from the SSW, 23-second period! Very long period (904 energy) but tiny. Reef break loves that long period, but 2 ft is barely rideable. Not worth it.

Thursday, July 23, morning gets interesting: 6 ft from the ENE, 12-second period, strong breeze, 1466 energy – moderate to strong. Still marginal, score 1. Afternoon goes to 2 ft SSW, 20-second period, 1006 energy.

Friday, July 24, sees the biggest swell: morning 8 ft from the ENE, 7-second period, 1005 energy. That’s a lot of water, but 7 seconds is short period – bumpy, chunky. Wind is 25 mph. Over 8 ft is expert territory, and with that short period, it’s a grindy mess. Not for beginners. Afternoon drops to 7 ft, still short period, still strong wind.

The best window is Saturday, July 26, to Wednesday, July 29. Swell drops to 4 ft to 6 ft, period is longer (12 to 17 seconds), energy is solid (1043 to 1357). Wind is still cross-off ENE, but moderate breeze (15 mph) on some mornings, glassy enough. The direction is still ENE, not the perfect SSE, but the longer period gives some shape. The best day is Monday, July 27, morning – 5 ft from the E, 15-second period, 1275 energy, moderate breeze, clean. That’s the standout. It’s not perfect, but it’s the best combo of size, period, and clean conditions. 5 ft is fine for most.

After that, it fades. Thursday, July 30, to Monday, August 3, the swell drops to 2 ft to 4 ft, periods 14 to 16 seconds, energy down to 365 to 953. Wind stays cross-off, but waves are too small. The last day, Monday, August 3, has 4 ft from the E, 16-second period, 953 energy – still marginal.

Overall, no absolute standout. Wind is always cross-off, keeping the surface clean, but the swell direction is wrong for the whole 16 days. The best window is July 27 to 29, with Monday morning the pick. If you’re patient, you might get a few fun ones, but don’t expect it to be pumping. The long-period groundswell from the S and SSW is a tease – there, but too small and wrong direction. The ENE windswell is consistent but poor quality.

Rusty.

Short Range Forecast

Mostly dry. Warm (max 26°C on Sun afternoon, min 24°C on Sat night). Mainly fresh winds.

Days 5-7 Weather Summary

Some drizzle, heaviest during Thu night. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Mainly strong winds.

Sunday
19
Monday
20
Tuesday
21
Wednesday
22
Thursday
23
Friday
24
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
2
1
2
1
1
1
0
1
1
1
2
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)
1.8
ENE
8
1.6
ENE
8
1.4
ENE
8
1.3
ENE
8
1.4
ENE
7
0.8
S
16
0.9
S
15
0.9
S
14
0.9
S
14
0.9
S
13
1.3
ENE
7
0.6
SSW
23
0.6
SSW
22
1.8
ENE
12
2.1
ENE
7
0.9
SSW
18
2.4
ENE
7
2.2
ENE
7
2.2
ENE
8
Wave Graph
Metric surfscale
Energy kJ
406
310
243
218
220
321
339
329
307
273
153
426
363
857
395
464
558
513
526
Wind (km/h)
30
ENE
35
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
30
ENE
30
ENE
35
ENE
35
ENE
30
ENE
40
ENE
35
ENE
40
ENE
40
ENE
40
ENE
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
High Tide
8:53AM0.38m
7:45PM0.43m
10:04AM0.43m
8:19PM0.34m
11:13AM0.49m
8:56PM0.27m
12:12PM0.54m
10:06PM0.22m
1:02PM0.59m
11:46PM0.19m
1:44PM0.62m
00:59AM0.18m
Low Tide
2:15AM0.02m
2:03PM0.22m
2:48AM0.03m
3:52PM0.27m
3:23AM0.04m
6:20PM0.26m
4:02AM0.05m
8:25PM0.21m
9:13PM0.17m
5:34AM0.05m
9:41PM0.14m
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
clear
clear
clear
part cloud
clear
rain showers
part cloud
clear
rain showers
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:58
6:00
6:00
6:00
6:01
6:01
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:14
7:14
7:14
7:13
 mm
1
1
Temp °C
25
25
26
25
26
26
25
26
26
25
25
26
25
25
25
25
25
26
25
Feels °C
22
23
23
23
25
24
23
25
24
23
22
23
22
22
21
22
21
23
22
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder
How to use the Wavefinder 
submit an eyeball surf report

Quick surf report for Rockpiles:

join our community of surf reporters

FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Rockpiles surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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.

Nearest locationNearest