Kewalos Surf Break

Lat Long: 21.29° N 157.86° W

Kewalos Surf Forecast and Surf Report

Issued: 7 am 05 Sep 2026 (local time)

Forecast update in  hr  min

Today's Kewalos sea temperature is
27.2°C
0.2° 

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


Kewalos surf forecast from 6 Sep 2026:

  • Best quality surf: Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 12s period, ENE swell with cross-offshore winds.
  • Most powerful swell: Tuesday 8 Sep, 2AM (local time) - 10ft (3.0m), 14s period, SW swell with 3,757 kJ wave energy.
  • Next surfable swell (1★+): Sunday 6 Sep, 11PM (local time) - 7ft (2.2m), 12s period with ENE 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 Sunday (Sep 06) at 11PM. The primary swell is predicted to be 2.2m and 12s period with a secondary swell of 1.4m and 14s. 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 3.0m 14s and forecast to arrive on Tuesday (Sep 08) at 2AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.9m 11s period and expected on Tuesday (Sep 08) at 2PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11PM (Sun 6th Sep)7ft (2.2m) 12s
Best Surf11PM (Sun 6th Sep)7ft (2.2m) 12s
Most Powerful 2AM (Tue 8th Sep)10ft (3.0m) 14s

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


The Lowdown

Hey folks, Rusty here. The next couple of weeks at Kewalos are looking like a bit of a mixed bag, with a real standout early on, then a long lull before some cleaner, smaller south-west groundswell shows up in the second week.

The first real action hits this Saturday, September 5th. We've got a solid 7.2ft ENE swell rolling in with a long 13 second period, and the wave energy is pumping hard at 2350. The wind is blowing cross-offshore from the ENE at 15–19 mph, keeping the waves clean. This is a big, powerful swell for the advanced crew only – over 8.2ft it's for experts. The water temperature is 81.0°F, which is about average for this time of year. Saturday morning is the pick, with clean conditions and a good amount of energy. Sunday drops a touch to 6.2ft, but still with a 12-second period and cross-off wind, making it a solid day for those who know Kewalos.

Then things get tricky. Monday the 7th sees the swell jump to 7.9ft, but the wind swings to a cross-shore, bringing in a cross-chop that will mess with the lineup. The wave energy is massive at 4341, but the quality isn't there. By Tuesday the 8th, the wind turns onshore from the south, and the waves get messy – it's a write-off for decent surfing. That trend continues through Wednesday and Thursday, with the swell dropping to 3.0ft and the wind staying cross-on or cross-shore. The 7-second period on Thursday the 10th is short and weak, so don't bother.

We have a long gap from around Monday the 7th until the following week. The surf is small and mostly wind-affected, with the swell dropping to 1.6ft by the 14th. It's a real flat spell.

A glimmer of hope returns on Monday, September 14th. A new, very long-period groundswell from the SW starts showing up – 23 seconds! That's a very long period, which will make for some beautifully shaped, powerful waves, but it's only 1.6ft. The following days, through the 15th and 16th, the swell builds slightly to 2.3ft–3.0ft, still with those long, clean periods (20-18 seconds) and cross-off winds. The best of this second week is likely Wednesday, September 16th, with 3.0ft SSW swell at 18 seconds and clean conditions. The wave energy is moderate at 765. This is smaller, better quality surf, but it's still a fun option if the first week was too much.

Friday, September 18th, is another one to watch – the swell picks up a bit to 3.6ft from the SSW with an 18-second period, and the wave energy jumps to 1047. The wind is cross-off from the ENE, so it should be clean. It's not huge, but it's the best of the late run. The weekend wraps up with dropping 3.3ft to 3.0ft swell, but the wind stays light and cross-off, keeping it clean.

The standout is definitely this Saturday, September 5th. The 7.2ft ENE swell, the long 13-second period, and the cross-off wind make for a powerful, clean session for the experts. It's a ripper.

Short Range Forecast

Heavy rain (total 24mm), heaviest during Sun night. Warm (max 27°C on Sat afternoon, min 25°C on Sat morning). Mainly fresh winds.

Days 4-6 Weather Summary

Moderate rain (total 12mm), heaviest on Wed afternoon. Warm (max 27°C on Tue morning, min 25°C on Thu night). Mainly fresh winds.

Saturday
5
Sunday
6
Monday
7
Tuesday
8
Wednesday
9
Thursday
10
Friday
11
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
2
2
3
2
3
3
3
3
0
0
0
1
0
1
1
1
2
3
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)
2.2
ENE
13
2.2
ENE
13
2.1
ENE
13
1.9
ENE
12
2
E
12
2.2
ENE
12
2.4
ENE
13
2.1
SW
14
3
SW
14
3
SW
12
1.7
ENE
11
1.3
ENE
10
0.9
SSW
14
0.9
SSW
13
1.2
ENE
8
1.4
ENE
7
1.3
ENE
7
1.6
ENE
13
1.5
ENE
12
1.4
ENE
12
1.4
ENE
11
Wave Graph
Metric surfscale
Energy kJ
1641
1654
1430
1100
1175
1338
1815
1830
3757
2368
627
356
273
257
176
208
167
828
619
530
469
Wind (km/h)
30
ENE
30
NE
20
ENE
30
ENE
25
ENE
20
ENE
25
E
20
E
30
SE
30
S
25
S
15
SSE
15
SE
15
E
20
ENE
25
ENE
20
ENE
20
ENE
20
E
20
ENE
20
ENE
Wind State
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross
cross
cross-on
on
on
cross-on
cross-on
cross
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
cross-off
High Tide
12:05PM0.69m
00:18AM0.21m
1:00PM0.73m
1:21AM0.26m
1:47PM0.73m
2:09AM0.32m
2:28PM0.72m
2:51AM0.39m
3:05PM0.69m
3:32AM0.45m
3:39PM0.64m
4:11AM0.50m
4:12PM0.57m
4:51AM0.54m
Low Tide
8:03PM0.13m
5:11AM0.08m
8:31PM0.10m
6:25AM0.07m
8:57PM0.08m
7:26AM0.06m
9:22PM0.06m
8:21AM0.06m
9:46PM0.05m
9:12AM0.07m
10:10PM0.04m
10:02AM0.10m
10:33PM0.04m
clear
clear
clear
part cloud
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
rain showers
rain showers
part cloud
part cloud
part cloud
clear
part cloud
part cloud
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
6:15
6:16
6:16
6:16
6:16
6:16
6:16
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
6:44
6:43
6:42
6:40
6:39
6:38
6:37
 mm
4
12
2
3
3
2
2
4
1
3
Temp °C
26
27
26
27
27
26
27
27
27
27
27
27
27
27
26
26
26
26
26
26
25
Feels °C
25
26
26
26
27
27
27
27
27
27
27
29
30
30
27
26
25
26
26
26
25
  • 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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