Keaulanas Surf Break

Lat Long: 21.38° N 158.15° W

Keaulanas Surf Forecast and Surf Report

Issued: 1 pm 08 Aug 2026 (local time)

Forecast update in  hr  min

Today's Keaulanas sea temperature is
27.0° C
0.4° 

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


Keaulanas surf forecast from 9 Aug 2026:

  • Best quality surf: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.4m), 16s period, S swell with offshore winds.
  • Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.4m), 16s period, S swell with 1,029 kJ wave energy.
  • Next surfable swell (1★+): Saturday 8 Aug, 8PM (local time) - 1.5ft (0.5m), 18s period with SW 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 Saturday (Aug 08) at 8PM. The primary swell is predicted to be 0.5m and 18s period with a secondary swell of 0.6m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Keaulanas in the next 16 days are 1.4m 16s and forecast to arrive on Thursday (Aug 13) at 2AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Saturday (Aug 15) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sat 8th Aug)1.5ft (0.5m) 18s
Best Surf 2AM (Thu 13th Aug)4.5ft (1.4m) 16s
Most Powerful 2AM (Thu 13th Aug)4.5ft (1.4m) 16s

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


The Lowdown

Alright folks, Rusty here. Let's have a look at what's on the menu for Keaulanas over the next couple of weeks.

We’ve got a bit of a slow start, but don't write it off. The first few days are small but clean, with a long-period groundswell that's got some real push for its size. The water temp is sitting at a normal 81°, so it's pretty average for this time of year. The standout window looks to be around Wednesday, August 12th through Friday, August 14th, where the swell ticks up a notch.

The best bet of the whole run looks like Wednesday morning, August 12th. You’ve got a solid 3ft swell from the S, with a moderate combined wave energy (798), and clean conditions with a cross-off breeze. It's not huge, but it's the most consistent and workable we’ll see all week. For a bit more size, Thursday morning, August 13th pushes 4ft from the S, but it comes with a fresh 19 mph offshore wind. That's clean, but makes paddling a bit of a fight. It’s still the biggest swell of the period, so if you’ve got the strength, it’s worth a crack.

From Saturday, August 15th onwards, things get a bit messy. The wind picks up hard, hitting 28-31 mph by Sunday, with a risk of thunderstorms and near gale cross-shore winds. That’s a write-off for surfing – honestly, that setup looks more interesting for kite surfing than paddle surfing. There’s a few days of small, ordinary surf after that, but nothing to get excited about.

We do get a little reprieve right at the end of the outlook. Thursday morning, August 20th and Friday morning, August 21st offer glassy or light cross-off conditions with 2-2ft of clean, long-period SSW swell. It’s small, but if you’ve got a longboard and the itch, it’ll be a pleasant paddle.

So, to sum it up: aim for Wednesday the 12th or Thursday the 13th for the best waves. The rest is either too small, too windy, or too ordinary to bother with.

Stay wet,
Rusty

Short Range Forecast

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

Days 5-7 Weather Summary

Mostly dry. Warm (max 28°C on Tue afternoon, min 25°C on Tue night). Mainly fresh winds.

Sat
8
Sunday
9
Monday
10
Tuesday
11
Wednesday
12
Thursday
13
Friday
14
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
2
1
1
2
1
1
1
1
3
2
1
4
1
2
3
2
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)
0.5
SW
18
0.6
SSW
17
0.5
SW
16
0.5
S
18
0.8
SSW
16
0.6
SSW
15
0.7
SSW
15
0.7
SSW
15
0.7
SSW
15
0.8
SSW
14
0.7
S
20
0.9
S
18
1
S
18
1.4
S
16
1.3
S
16
1.3
S
15
1.2
S
15
1.1
S
14
1
S
14
0.9
S
14
Wave Graph
Metric surfscale
Energy kJ
154
202
130
156
288
186
234
240
222
269
373
515
613
1029
868
773
636
496
411
306
Wind (km/h)
25
ENE
20
ENE
15
ENE
25
ENE
20
ENE
15
ENE
25
ENE
15
ENE
15
ENE
25
ENE
15
ENE
20
E
25
ENE
20
ENE
25
ENE
30
ENE
25
ENE
30
ENE
30
ENE
25
NE
Wind State
cross-off
off
off
off
cross-off
off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
cross-off
off
off
off
off
off
High Tide
00:29AM0.20m
2:02PM0.77m
1:39AM0.23m
2:45PM0.79m
2:33AM0.27m
3:24PM0.79m
3:22AM0.32m
4:00PM0.76m
4:10AM0.37m
4:33PM0.71m
4:57AM0.42m
5:03PM0.63m
Low Tide
9:20PM0.17m
6:00AM0.03m
9:41PM0.14m
7:02AM0.01m
10:06PM0.12m
7:57AM0.01m
10:31PM0.10m
8:49AM0.02m
10:56PM0.10m
9:38AM0.06m
11:20PM0.09m
10:27AM0.12m
11:44PM0.09m
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:07
6:09
6:09
6:09
6:09
6:09
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:06
7:05
7:05
7:04
7:02
 mm
Temp °C
28
26
27
29
26
28
29
26
28
28
25
27
28
25
28
28
26
27
28
26
Feels °C
26
26
28
28
26
29
29
26
28
27
24
26
26
24
26
25
26
25
25
25
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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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