Surf Forecasts:
Kewalos surf forecast from 10 Sep 2026:
- Best quality surf: Wednesday 9 Sep, 5PM (local time) - 3ft (0.9m), 13s period, SSW swell with cross-offshore winds.
- Most powerful swell: Wednesday 16 Sep, 2PM (local time) - 3ft (0.9m), 18s period, SSW swell with 541 kJ wave energy.
- Next surfable swell (1★+): Wednesday 9 Sep, 5PM (local time) - 3ft (0.9m), 13s 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 Wednesday (Sep 09) at 5PM. The primary swell is predicted to be 0.9m and 13s period with a secondary swell of 0.9m 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 0.9m 18s and forecast to arrive on Wednesday (Sep 16) at 2PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 9s period and expected on Sunday (Sep 13) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 5PM (Wed 9th Sep) | 3ft (0.9m) 13s |
| Best Surf | 5PM (Wed 9th Sep) | 3ft (0.9m) 13s |
| Most Powerful | 2PM (Wed 16th Sep) | 3ft (0.9m) 18s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, I'm Rusty, and we’re looking at what’s cookin’ at Kewalos. It’s a pretty slow run overall, but there are a couple of days that’ll get your heart rate up.
Right out the gate, Wednesday the 9th is your best bet. We’ve got a clean 3ft swell coming from the SSW, with a solid 13-second period on it – that’s real groundswell. The wind is a whisper at 5 km/h, light cross-off, so the surface is gonna be glassy. The energy is a healthy 543. Water temp is 81°, which is about normal for this time of year. This is the one, plain and simple. Expect some proper lines. Crowds are likely at this spot, but for waves like this, it’s worth the paddle.
From there, it goes downhill fast. Thursday the 10th and Friday the 11th bring stronger winds, 20 to 25 km/h, and the swell legs drop to a weak, jumbled 4-5 feet from the ENE with a period of only 7 seconds. That’s trash.
Then we hit a real dead zone. From Saturday the 12th through Monday the 14th, the swell just disappears, dropping to 1ft or less. The energy bottoms out at 135, which is barely a ripple. The period is really long, but there’s no height to work with. Tuesday the 15th afternoon tries a little pulse, 2ft at a long 19 seconds, but it’s just “good,” not great.
The next week is a blur of windy, short-period junk. Sunday the 19th gives us 6ft from the east, but it’s windswell with a 7-second period and 30 km/h winds. Just blown-out chop. Stay out of the water.
The real second chance comes on Monday the 21st in the afternoon. The wind drops to a beautiful 5 km/h, cross-off again, pushing a clean 5-6ft swell from the ENE. The period is still short at 8 seconds, but with those conditions, you’ll find some fun, punchy waves. Energy is moderate at 497.
And then Wednesday the 23rd, late in the day, is another sleeper. Only 2-3ft from the SSW, but with a 15-second period and a light 10 km/h cross-off wind. The energy at 537 is solid for that size. It’ll be the smoothest, most lined-up paddle of the second half.
So, day one and the last couple of afternoons are where it’s at. A whole lot of nothing in between, but those windows are worth chasing.
Rusty.
Short Range ForecastSome drizzle, heaviest during Wed night. Warm (max 27°C on Wed afternoon, min 24°C on Fri night). Winds increasing (calm on Wed afternoon, fresh winds from the ENE by Thu afternoon). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sun afternoon, min 24°C on Sat night). Wind will be generally light. | |||||||||||||||||||
Wed 9 | Thursday 10 | Friday 11 | Saturday 12 | Sunday 13 | Monday 14 | Tuesday 15 | ||||||||||||||
PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | AM | PM | Night | |
Swell Height Map |  |  |  |  |  |  |  | |||||||||||||
Wave Height (m) Direction Period (s) | SSW 13 | ENE 8 | ENE 7 | ENE 7 | SW 16 | ENE 11 | E 11 | ENE 10 | SW 15 | SW 16 | E 9 | SW 15 | SSW 15 | SW 12 | SW 23 | SW 22 | SW 21 | SW 20 | SW 19 | SSW 19 |
Wave Graph  | ||||||||||||||||||||
 kJ | 257 | 176 | 203 | 188 | 268 | 387 | 238 | 267 | 242 | 124 | 79 | 107 | 84 | 37 | 86 | 227 | 224 | 392 | 384 | 470 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | 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 | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 3:05PM0.69m | 3:32AM0.45m | 3:39PM0.64m | 4:11AM0.50m | 4:12PM0.57m | 4:51AM0.54m | 4:42PM0.50m | 5:31AM0.57m | 5:11PM0.43m | 6:14AM0.58m | 5:40PM0.36m | 7:02AM0.58m | 6:07PM0.30m | |||||||
Low Tide | 9:46PM0.05m | 9:12AM0.07m | 10:10PM0.04m | 10:02AM0.10m | 10:33PM0.04m | 10:52AM0.13m | 10:56PM0.05m | 11:45AM0.17m | 11:19PM0.06m | 12:45PM0.20m | 11:42PM0.08m | 2:03PM0.23m | 00:07AM0.11m | |||||||
 |  | |  |  | | | | | | | | | | | | | | |  | |
 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:16 | — | — | 6:18 | — | — | 6:18 | — | — |
 | 6:39 | — | — | 6:38 | — | — | 6:37 | — | — | 6:37 | — | — | 6:36 | — | — | 6:35 | — | — | 6:34 | — |
mm | — | 1 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 2 |
Temp °C | 27 | 27 | 26 | 27 | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 27 | 26 | 27 | 28 | 27 |
Feels °C | 31 | 31 | 27 | 26 | 26 | 25 | 26 | 25 | 26 | 25 | 25 | 25 | 26 | 25 | 26 | 27 | 28 | 29 | 30 | 29 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 7 | ENE 7 | SW 16 | SW 16 | E 11 | ENE 10 | ENE 10 | NE 9 | NNE 9 | NE 9 | SSW 15 | NE 9 | NE 8 | SW 22 | NE 8 | NE 8 | NE 7 | E 8 |
| kJ | 120 | 161 | 203 | 188 | 268 | 261 | 238 | 267 | 128 | 79 | 96 | 75 | 84 | 79 | 72 | 227 | 119 | 79 | 65 | 114 |
Swell 2 Height (m) Direction Period (s) | SSW 13 | E 13 | E 12 | E 12 | E 11 | NNE 8 | SW 15 | SW 15 | NE 8 | ENE 10 | E 9 | SW 15 | SW 12 | SW 12 | SW 14 | SW 14 | SW 21 | SW 20 | SW 19 | SSW 19 |
| kJ | 257 | 156 | 141 | 101 | 93 | 26 | 229 | 226 | 72 | 98 | 79 | 107 | 37 | 37 | 49 | 49 | 224 | 392 | 384 | 470 |
Swell 3 Height (m) Direction Period (s) | E 13 | SSW 13 | SSW 13 | SSW 13 | S 12 | SSW 12 | SSW 12 | SSW 11 | SW 15 | SW 16 | SSW 13 | SSW 12 | SSE 9 | ENE 8 | SW 23 | SSE 8 | SW 13 | E 8 | E 8 | NE 7 |
| kJ | 166 | 176 | 133 | 131 | 69 | 47 | 46 | 24 | 242 | 124 | 68 | 57 | 8 | 14 | 86 | 7 | 44 | 29 | 42 | 56 |
Wind waves Height (m) Direction Period (s) | — | — | — | ENE 7 | ENE 7 | ENE 11 | NNE 8 | — | — | — | — | ENE 9 | NE 9 | ENE 5 | ENE 5 | NE 8 | — | — | — | ENE 8 |
| kJ | — | — | — | 127 | 158 | 387 | 50 | — | — | — | — | 62 | 164 | 41 | 42 | 171 | — | — | — | 220 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 0 | 0 | 28 | 28 | 1 | 1 | 1 | 0 | 3 | 1 | 0 | 3 | 1 | 14 | 1 | 1 | 0 | 4 | 0 | 0 |
Best forecast wave conditions in Oahu | ||||||||||||||||||||
Best forecast wave conditions in United States | ||||||||||||||||||||
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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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