Keaulanas Surf Break

Lat Long: 21.38° N 158.15° W

Keaulanas Surf Forecast and Surf Report

Issued: 1 pm 24 Aug 2026 (local time)

Forecast update in  hr  min

Today's Keaulanas sea temperature is
27.6°C
0.8° 

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


Keaulanas surf forecast from 25 Aug 2026:

  • Best quality surf: Wednesday 26 Aug, 5PM (local time) - 2.5ft (0.8m), 18s period, S swell with offshore winds.
  • Most powerful swell: Thursday 27 Aug, 11AM (local time) - 3.5ft (1.1m), 17s period, S swell with 702 kJ wave energy.
  • Next surfable swell (1★+): Tuesday 25 Aug, 2AM (local time) - 2.5ft (0.7m), 13s period with SSW swell.

Best Forecast Surf Conditions for Keaulanas this week:

The surf forecast for Keaulanas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Tuesday (Aug 25) at 2AM. The primary swell is predicted to be 0.7m and 13s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Keaulanas in the next 16 days are 1.1m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 8s period and expected on Monday (Aug 31) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Tue 25th Aug)2.5ft (0.7m) 13s
Best Surf 5PM (Wed 26th Aug)2.5ft (0.8m) 18s
Most Powerful11AM (Thu 27th Aug)3.5ft (1.1m) 17s

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


The Lowdown

Alright, I’m gonna be straight with ya, it’s been a bit flat and quiet out here. The next few days are looking pretty average, but there’s a window of cleaner conditions shaping up mid-week that’ll get the blood pumping. Let’s break it down.

We’re looking at Keaulanas, a beach and reef setup that picks up swell from the west. Right now, Monday afternoon the 24th, there’s a little 2 ft, 13-second swell from the SSW, but with a 12 mph cross-off wind, it’s just not happening — poor conditions, and the energy is weak (156). The water’s sitting at a warm 82°, which is about normal for this time of year.

Tuesday the 25th and into Wednesday morning the 26th, it’s more of the same: small, messy cross-off winds and barely any rideable bumps. You’re better off staying on the beach.

Now, here’s where it gets interesting. Wednesday afternoon the 26th, the wind swings offshore from the ENE, and we’ve got a clean 3 ft S swell pushing in with a long 18-second period. The combined energy jumps to 530 — that’s moderate energy, and the conditions are looking very good. This is the first real standout, right here. That long period groundswell will wrap nicely into Keaulanas, so expect some nice, lined-up waves, but it’s not going to be a circus. Crowds are possible though, so pick your peak.

Thursday morning the 27th builds on that. We’ve got 4 ft of S swell, still 17 seconds, with a clean offshore wind. Energy hits 815, still moderate but pushing into strong territory. The waves will have some punch, but it’s still manageable for an intermediate. This is the other standout — keep an eye on it.

Friday the 28th sees the swell ease a little, but the afternoon session with offshore wind and 3 ft S swell at 14 seconds should offer some fun ones. Energy’s around 446, still decent. After that, we drop back into smaller, less consistent surf through the weekend and into the start of September.

The first week of September, Monday the 31st through Wednesday the 3rd, has some clean but small swell, mostly in the 2 ft to 3 ft range, with periods around 14-16 seconds. The offshore winds keep things tidy, but it’s not going to blow your mind. By Thursday the 3rd, the wind freshens, and conditions get tougher — strong offshore makes paddling a chore.

From the 4th of September onward, it gets windy and messy. Strong breezes, some rain, and even a risk of thunderstorms. The swell sticks around in the 2 ft to 3 ft range, but with 25+ mph winds, it’ll be choppy and hard. The last few days, the 7th and 8th, the wind drops out, leaving light cross-shore breezes and clean but small waves — a nice way to finish the run, but nothing to get excited about.

So, to sum it up: the best windows are Wednesday afternoon the 26th and Thursday morning the 27th. That’s your best chance for clean, lined-up surf with some real push. After that, it’s a waiting game with smaller, cleaner days sprinkled in.

This is Rusty, signing off. See you in the water.

Short Range Forecast

Mostly dry. Warm (max 29°C on Mon afternoon, min 25°C on Tue night). Wind will be generally light.

Days 5-7 Weather Summary

Mostly dry. Warm (max 28°C on Thu afternoon, min 25°C on Thu night). Wind will be generally light.

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)
0
2
0
0
2
0
3
3
3
2
2
1
2
2
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)
0.7
SSW
13
0.7
SSW
13
0.5
SSW
16
0.6
SSW
16
0.6
SSW
15
0.7
SSW
14
0.8
S
18
0.7
S
19
1.1
S
17
1
S
16
1.1
S
16
0.9
S
14
1
S
14
0.8
S
14
0.8
S
13
0.8
S
13
0.6
SSW
17
0.6
SSW
16
0.6
SSW
16
0.7
SSW
15
Wave Graph
Metric surfscale
Energy kJ
156
140
147
196
167
215
395
365
702
534
582
334
399
229
219
215
188
171
162
199
Wind (km/h)
20
E
20
ENE
30
E
25
ENE
20
ENE
25
ENE
25
ENE
15
ENE
20
ENE
25
ENE
15
ENE
25
ENE
25
ENE
20
ENE
30
ENE
25
ENE
20
ENE
20
ENE
25
ENE
25
ENE
Wind State
cross-off
off
cross-off
cross-off
off
cross-off
off
off
off
off
cross-off
cross-off
off
off
cross-off
off
cross-off
cross-off
off
cross-off
High Tide
2:17PM0.67m
2:05AM0.28m
2:47PM0.68m
2:41AM0.32m
3:14PM0.68m
3:17AM0.36m
3:40PM0.66m
3:54AM0.41m
4:06PM0.63m
4:33AM0.46m
4:30PM0.57m
5:15AM0.50m
4:54PM0.51m
Low Tide
9:34PM0.15m
7:24AM0.08m
9:50PM0.14m
8:06AM0.07m
10:06PM0.13m
8:47AM0.08m
10:23PM0.11m
9:29AM0.11m
10:41PM0.10m
10:14AM0.14m
11:00PM0.09m
11:03AM0.19m
11:21PM0.08m
clear
clear
clear
clear
clear
clear
clear
part cloud
part cloud
clear
clear
part cloud
clear
clear
clear
clear
part cloud
part cloud
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:13
6:13
6:13
6:13
6:15
6:15
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:54
6:54
6:53
6:52
6:52
6:51
6:50
 mm
Temp °C
29
27
28
28
26
27
27
25
27
28
26
26
28
25
26
27
26
27
28
26
Feels °C
29
28
26
26
26
25
25
24
26
27
26
25
26
24
24
25
25
26
26
26
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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 Keaulanas Surf forecast

The above surf forecast table for Keaulanas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Keaulanas can be found by selecting the local surf guide option on the grey menu. Our Keaulanas 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 (Keaulanas) 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 Keaulanas 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.

Keaulanas is 7 km (4 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.

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