Kewalos Surf Break

Lat Long: 21.29° N 157.86° W

Kewalos Surf Forecast and Surf Report

Issued: 7 pm 14 Aug 2026 (local time)

Forecast update in  hr  min

Today's Kewalos sea temperature is
27.3° C
0.6° 

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


Kewalos surf forecast from 15 Aug 2026:

  • Best quality surf: Thursday 20 Aug, 8AM (local time) - 2ft (0.6m), 18s period, SSW swell with cross-offshore winds.
  • Most powerful swell: Sunday 16 Aug, 2AM (local time) - 16ft (5.0m), 10s period, E swell with 5,677 kJ wave energy.
  • Next surfable swell (1★+): Thursday 20 Aug, 8AM (local time) - 2ft (0.6m), 18s period with SSW swell.

Best Forecast Surf Conditions for Kewalos this week:

The surf forecast for Kewalos over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 8AM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.8m and 8s. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Kewalos in the next 16 days are 5.0m 10s and forecast to arrive on Sunday (Aug 16) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.0m 8s period and expected on Friday (Aug 21) at 8PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8AM (Thu 20th Aug)2ft (0.6m) 18s
Best Surf 8AM (Thu 20th Aug)2ft (0.6m) 18s
Most Powerful 2AM (Sun 16th Aug)16ft (5.0m) 10s

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


The Lowdown

Alright, let's get into it. Rusty here, and I've been staring at the charts for this stretch, and to be honest, things look pretty grim for a good while. That first week or so is gonna be a write-off for any kind of decent surf. We're looking at a dry spell that lasts from now right through until around the 26th of August. There's swell on the horizon, but you've got to be patient.

Let's talk about the only spot on the menu: Kewalos. It’s a reef break, so you need to know what you're doing out there, and it’s an exposed spot that lights up best when the swell comes from the SSE.

This first week is rough. From the 15th to the 26th, the surf quality is almost non-existent. We see a big, messy pulse of windswell on the 15th and 16th pushing 8 ft to 13 ft, but the wind is howling out of the ENE at 31 to 34 mph. That’s near gale force, so forget about it – it’s just a washing machine. The water temp is about average for this time of year, which is nice, but you won't be in it.

After that, the swell drops right off. We get a mix of tiny S and SSW groundswells, knee-high at best, between the 17th and the 25th. The combined swell energy is weak, often reading under 500. A few mornings are clean with cross-offshore ENE winds, but the waves are just too small to bother with. The whole setup is more frustrating than fun.

Now, the light at the end of the tunnel. Things start to look up on the 27th of August. Thursday morning we see a building E swell at 4 ft with a period stretching out to 18 seconds – that's proper groundswell energy. The wind stays clean and cross-off from the ENE at 19 mph. The energy jumps to 1351, which is a solid push. It’s still a "marginal" call, but it’s the first sign of life.

And then we get to the 30th of August, the Sunday. This is the standout. The morning brings a solid 10 ft swell from the ENE, with a period of 14 seconds and a combined energy reading of 3591 – that's some serious power. The wind is a moderate breeze from the ENE, keeping it cross-off and clean. This is a big, powerful swell, over 8 ft, so this is strictly for the experts. The crowds here are listed as "often," so expect a full pack of experienced locals. Just remember, that being a reef, a long-period swell like this will be lined up and hollow. If you're not on your game, you'll be in for a rough time.

So, there it is. Two weeks of quiet, then a promising build-up, capped off by a big, juicy swell for the experts on the 30th. Keep an eye on it, conditions can change.

Rusty.

Short Range Forecast

Heavy rain (total 47mm), heaviest during Sat night. Warm (max 27°C on Sat afternoon, min 24°C on Sat night). Winds decreasing (gales from the ENE on Sat night, light winds from the ENE by Sun night).

Days 5-7 Weather Summary

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

Saturday
15
Sunday
16
Monday
17
Tuesday
18
Wednesday
19
Thursday
20
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
1
0
2
1
1
0
0
0
1
0
0
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)
3
ENE
8
4
ENE
9
4
E
10
5
E
10
2.5
ENE
9
2.2
ENE
9
1.9
ENE
8
1.6
ENE
8
0.8
S
14
1.4
ENE
7
1.3
ENE
7
1.2
ENE
7
1.2
ENE
7
1.1
ENE
8
0.8
E
8
0.5
SW
16
0.6
SSW
18
0.6
SSW
17
0.7
SW
16
Wave Graph
Metric surfscale
Energy kJ
952
2430
3286
5677
993
692
449
300
260
173
165
121
143
163
84
129
207
200
274
Wind (km/h)
45
NE
50
ENE
55
NE
65
ENE
30
ESE
30
SE
15
ENE
30
ENE
25
ENE
25
ENE
35
ENE
30
ENE
25
ENE
25
ENE
20
ENE
20
ENE
20
ENE
15
NE
10
NE
Wind State
cross-off
cross-off
cross-off
cross-off
cross
cross-on
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
6:06AM0.44m
5:54PM0.53m
6:57AM0.47m
6:24PM0.45m
7:54AM0.49m
6:52PM0.37m
8:59AM0.51m
7:16PM0.30m
10:13AM0.53m
11:25AM0.56m
10:11PM0.21m
Low Tide
00:03AM0.04m
11:43AM0.14m
00:30AM0.05m
12:43PM0.20m
00:58AM0.06m
1:59PM0.25m
1:27AM0.08m
3:56PM0.27m
2:01AM0.10m
2:47AM0.12m
8:27PM0.20m
clear
part cloud
clear
thunderstorm
thunderstorm
thunderstorm
thunderstorm
part cloud
clear
clear
part cloud
clear
clear
part cloud
clear
clear
clear
part cloud
part cloud
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:09
6:09
6:09
6:09
6:11
6:11
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:01
7:00
7:00
7:00
6:59
6:58
6:57
 mm
23
15
8
1
Temp °C
25
26
27
26
26
27
27
26
26
25
26
26
25
26
26
25
26
27
26
Feels °C
23
21
22
21
24
26
28
26
26
25
23
24
24
25
26
25
26
28
28
  • 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 Kewalos Surf forecast

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

Kewalos is 5 km (3 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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