Keaulanas Surf Break

Lat Long: 21.38° N 158.15° W

Keaulanas Surf Forecast and Surf Report

Issued: 1 pm 21 Jul 2026 (local time)

Forecast update in  hr  min

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

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


Keaulanas surf forecast from 22 Jul 2026:

  • Best quality surf: Wednesday 22 Jul, 2AM (local time) - 3ft (0.9m), 13s period, S swell with cross-offshore winds.
  • Most powerful swell: Saturday 25 Jul, 11PM (local time) - 3.5ft (1.1m), 18s period, SSW swell with 790 kJ wave energy.
  • Next surfable swell (1★+): Wednesday 22 Jul, 2AM (local time) - 3ft (0.9m), 13s period with S 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 Wednesday (Jul 22) at 2AM. The primary swell is predicted to be 0.9m and 13s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Keaulanas in the next 16 days are 1.1m 18s and forecast to arrive on Saturday (Jul 25) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.6m 7s period and expected on Saturday (Jul 25) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2AM (Wed 22nd Jul)3ft (0.9m) 13s
Best Surf 2AM (Wed 22nd Jul)3ft (0.9m) 13s
Most Powerful11PM (Sat 25th Jul)3.5ft (1.1m) 18s

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


The Lowdown

Alright folks, Rusty here. Let’s check out what’s on the menu for Keaulanas. We’ve got a solid run of small but clean, rideable surf stretching across the next couple of weeks. The water is sitting at 80°F, which is pretty much average for this time of year, so no surprises there.

The real story is the wind. For the first week and a half, we’re seeing a lot of offshore and cross-off breezes, which will keep the surface glassy or clean. The swell is coming mainly from the SSW, with a period that starts long and drops off slowly. That long-period groundswell (up to 24 seconds at the start) means the waves will have good shape and energy, but at a beach-and-reef setup like Keaulanas, it can be a bit straight. Still, the moderate energy (combined energy around 405 to 714 for the first few days) keeps things interesting.

The best on offer? Wednesday the 22nd and Wednesday the 29th of July are standouts. On the 22nd, Wednesday afternoon sees a clean 2ft SSW swell with a 23-second period and a solid offshore breeze from the ENE. The energy is strong (629) and conditions are set to be excellent. Then on the 29th, Wednesday morning and afternoon both have 2ft SSW swell, light offshore winds, and clean, glassy conditions. That’s a sweet spot.

Thursday the 30th of July morning is also a banger—glassy conditions with a 2ft WSW swell, period of 13 seconds (334 energy). That’s a real treat, with the wind so light it’s glassy. Friday the 31st of July morning repeats that glassy magic with a 3ft W swell and 14-second period (410 energy). The afternoon of the 31st is even better with a 3ft W swell, 13-second period, and gentle offshore wind (637 energy). That’s a top session.

Now, after the first week of August, the winds start to get a bit stronger and the swell drops off a little. The 1st and 2nd of August are a write-off—poor conditions with strong cross-off winds. But from the 3rd of August onward, things tidy up again with smaller 2ft to 2ft swells, good offshore winds, and even some glassy mornings. The 4th and 5th of August both have glassy starts with 2ft SSW swell and 16-second period, perfect for a longboard or a fun fish.

Overall, Keaulanas is a consistent spot through this period. The crowds can be around sometimes, but with these clean, small waves, it’s not going to be a zoo. The SSW swell direction is a good match for the break’s optimum from the west, so the waves will have some punch.

Keep an eye on that Wednesday the 22nd and the end of the month—those are the real gems. The long-range stuff (first week of August) is promising but a bit less certain, so don’t bank on it.

Rusty.

Short Range Forecast

Light rain (total 2mm), mostly falling on Tue afternoon. Warm (max 27°C on Tue afternoon, min 24°C on Wed night). Mainly fresh winds.

Days 5-7 Weather Summary

Mostly dry. Warm (max 27°C on Fri afternoon, min 24°C on Fri night). Mainly fresh winds.

Tue
21
Wednesday
22
Thursday
23
Friday
24
Saturday
25
Sunday
26
Monday
27
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
1
3
2
3
2
1
1
1
1
2
2
1
2
3
3
2
1
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)
0.9
S
14
0.9
S
13
0.6
SSW
24
0.6
SSW
23
0.7
SSW
22
0.8
SSW
20
0.7
SSW
20
1
SSW
18
0.7
SSW
18
0.9
SSW
17
0.8
SSW
16
0.8
SSW
19
1
SSW
18
1
SSW
18
0.9
SSW
16
0.9
SSW
16
0.8
SSW
16
0.8
SSW
15
0.8
SSW
15
0.7
SSW
14
Wave Graph
Metric surfscale
Energy kJ
302
277
437
426
480
528
395
616
329
428
299
502
716
662
469
452
333
288
284
213
Wind (km/h)
15
E
15
E
25
E
25
ENE
20
ENE
30
ENE
30
ENE
25
ENE
25
ENE
30
ENE
25
ENE
25
ENE
25
ENE
15
ENE
20
ENE
30
ENE
20
ENE
15
ENE
20
ENE
15
ENE
Wind State
cross-off
cross-off
cross-off
off
cross-off
cross-off
cross-off
cross-off
cross-off
off
cross-off
cross-off
off
off
off
off
cross-off
off
off
off
High Tide
12:00PM0.57m
12:51PM0.61m
1:33PM0.64m
00:26AM0.22m
2:12PM0.67m
1:26AM0.22m
2:47PM0.69m
2:10AM0.23m
3:19PM0.71m
2:49AM0.25m
Low Tide
3:27AM0.11m
4:14AM0.11m
5:08AM0.10m
9:51PM0.20m
6:03AM0.09m
10:04PM0.18m
6:52AM0.07m
10:23PM0.17m
7:35AM0.05m
10:44PM0.15m
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
clear
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:01
6:01
6:01
6:03
6:03
6:03
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:15
7:15
7:15
7:15
7:14
7:14
7:14
 mm
2
Temp °C
27
26
26
26
25
26
27
25
26
27
25
26
27
25
26
27
24
25
27
25
Feels °C
28
27
25
24
24
24
24
24
24
25
24
24
25
25
25
25
22
25
26
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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