
Surf Forecasts:
Kewalos surf forecast from 16 Sep 2026:
- Most powerful swell: Wednesday 23 Sep, 2AM (local time) - 8ft (2.5m), 10s period, E swell with 1,232 kJ wave energy.
Best Forecast Surf Conditions for Kewalos this week:
The most powerful waves expected at Kewalos in the next 16 days are 2.5m 10s and forecast to arrive on Wednesday (Sep 23) 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 1.7m 6s period and expected on Thursday (Sep 17) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2AM (Wed 23rd Sep) | 8ft (2.5m) 10s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, here’s the honest truth for Kewalos – it’s a tough stretch right now. We’ve got some swell moving through, but most of it is junky, short-period stuff, and the wind is going to be against us a lot of the time.
Starting Wednesday the 16th, it’s clean but weak. We’re looking at 3ft from the SW with a long 18-second period. Energy is moderate, around 590-672. Wind is a cross-off from the ENE at 15-18 mph, so it’s glassy, but there’s just no punch. It’s a marginal day, not worth getting excited about.
Thursday the 17th, the swell jumps to 6.5ft, but it swings to the ENE and the period drops to 9-10 seconds. That’s wind swell, plain and simple. Energy reads 1172, so there’s some push, but it’s going to be lumpy and disorganized. The wind is still cross-off, but the quality just isn’t there. Marginal again.
Friday the 18th, it backs off to 3.3ft, back to a SSW swell at 17 seconds. Morning energy is 1069, still moderate. But by the afternoon, it’s flagged as poor. The morning might give you a few, but don’t plan your day around it.
Saturday the 19th: morning has 3ft from the SSW at 16 seconds, energy 843. But the afternoon flips to a short-period ENE swell at 6.2ft with only 8 seconds, and it’s called poor. That’s a classic junky wind swell. Not worth it.
Sunday the 20th: morning shows 6.9ft from the E with a 7-second period – that’s super short. Energy is 835, marginal. Afternoon drops to 6.2ft and is poor. Wind is cross-off, but the swell is just too crumbly.
Monday the 21st is similar – 6.9ft ENE at 8 seconds in the morning, energy 801, then 7.9ft in the afternoon. Still marginal, still clean-ish, but nothing to get stoked about.
Tuesday the 22nd pushes up to 8.2ft ENE at 9 seconds, with energy climbing to 1057-1100. Winds are stronger now, 25 mph cross-off. The size is getting up there, and for a reef like Kewalos, that’s expert territory. With the short period, it’s going to be raw and challenging. Still, it’s a step up in energy, but it’s a serious, heavy wave.
Then things turn ugly. Wednesday the 23rd brings moderate rain and a risk of thunderstorms, winds building to 28-31 mph. Swell stays around 8.2ft ENE at 10 seconds, energy hits 1539 – that’s strong – but the conditions are called poor. Not a surf day.
Thursday the 24th: more rain, cross-off winds at 25 mph, but the swell drops back to 7.9ft at 8 seconds. Energy is 968. Poor conditions again, with some lumpy cross-chop in the afternoon. Bad news.
Friday the 25th and into the weekend, the wind shifts to cross-on and cross-onshore, with rain showers and thunderstorms. Swell is still 6.5-7.5ft from the ENE at 7 seconds – really short period – energy ranging 852-1044. But it’s lumpy, fresh cross-onshore junk. This is not surfable. Honestly, this setup looks way more interesting for kite surfing than paddle surfing.
Sunday the 27th gives a small break – morning shows 3ft SSW at 16 seconds with a cross wind and some cross-chop, still marginal. The afternoon pops back to 6.5ft ENE at 7 seconds, still poor. Messy.
Monday the 28th: morning drops to 2ft SSW at 19 seconds – pretty weak, energy 450, and it’s poor. Afternoon brings back 5.6ft ENE at 8 seconds, still marginal but not great.
Tuesday the 29th is the one bright spot. Morning shows 3ft SSW at 16 seconds, energy 705, marginal. But the afternoon builds to a moderate 1241 energy with the same 3ft SSW at 16 seconds. That’s a bump in energy for the same size, which could mean a cleaner, longer-period pulse. Still small, but it might be the cleanest window of the whole run.
Wednesday the 30th and Thursday the 1st of October bring back the ENE swell at 6.2-6.
Short Range ForecastLight rain (total 5mm), mostly falling on Thu night. Warm (max 28°C on Wed afternoon, min 26°C on Tue night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Sat morning, min 25°C on Sat night). Mainly fresh winds. | ||||||||||||||||||
Wednesday 16 | Thursday 17 | Friday 18 | Saturday 19 | Sunday 20 | Monday 21 | ||||||||||||||
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 19 | SW 18 | SSW 18 | SW 17 | ENE 10 | ENE 9 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | ENE 8 | E 8 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph | |||||||||||||||||||
470 | 455 | 541 | 429 | 747 | 630 | 644 | 622 | 580 | 539 | 377 | 438 | 551 | 452 | 394 | 414 | 469 | 644 | 645 | |
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 |
High Tide | 7:59AM0.57m | 6:32PM0.25m | 9:10AM0.56m | 7:25PM0.21m | 10:27AM0.57m | 11:01PM0.21m | 11:34AM0.59m | 00:19AM0.23m | 12:26PM0.61m | 00:59AM0.27m | 1:06PM0.62m | 1:32AM0.32m | |||||||
Low Tide | 00:07AM0.11m | 4:06PM0.24m | 00:38AM0.13m | 7:14PM0.21m | 1:26AM0.16m | 7:23PM0.18m | 2:56AM0.18m | 7:43PM0.16m | 4:35AM0.17m | 8:01PM0.15m | 5:47AM0.16m | 8:17PM0.13m | |||||||
— | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | 6:18 | — | — | |
6:34 | — | 6:32 | — | — | 6:31 | — | — | 6:30 | — | — | 6:30 | — | — | 6:29 | — | — | 6:28 | — | |
mm | — | — | — | — | — | — | 5 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 28 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 27 | 28 | 25 | 27 | 26 | 26 | 24 | 24 | 25 | 25 | 24 | 24 | 24 | 24 | 24 | 25 | 24 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 19 | SW 18 | SSW 18 | SW 17 | SW 16 | SSW 16 | SSW 18 | SSW 17 | SSW 17 | SSW 16 | SSW 16 | SSW 16 | SSW 16 | S 16 | SSW 15 | SSW 14 | S 14 | S 14 | S 13 |
470 | 455 | 541 | 429 | 258 | 322 | 644 | 622 | 580 | 539 | 377 | 387 | 273 | 239 | 300 | 280 | 253 | 179 | 168 | |
Swell 2 Height (m) Direction Period (s) | NNE 7 | E 10 | E 10 | E 10 | SSW 20 | SSW 19 | WSW 8 | W 9 | SE 7 | S 20 | SSW 18 | S 18 | SW 16 | SSW 15 | SW 15 | SW 15 | SSW 14 | SW 13 | SW 13 |
31 | 100 | 100 | 96 | 149 | 210 | 7 | 7 | 12 | 30 | 106 | 99 | 121 | 144 | 104 | 33 | 79 | 46 | 46 | |
Swell 3 Height (m) Direction Period (s) | E 11 | SW 12 | SW 11 | SW 11 | SW 11 | SSW 10 | SSE 10 | SSE 10 | W 9 | SSE 9 | SE 6 | SSE 6 | SSW 14 | N 11 | N 11 | W 12 | W 11 | W 11 | W 11 |
58 | 35 | 31 | 19 | 18 | 10 | 9 | 9 | 6 | 7 | 10 | 7 | 38 | 2 | 2 | 11 | 10 | 9 | 9 | |
Wind waves Height (m) Direction Period (s) | ENE 6 | NE 6 | NE 6 | ENE 6 | ENE 10 | ENE 9 | ENE 9 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 8 | E 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 |
57 | 85 | 164 | 229 | 747 | 630 | 482 | 438 | 384 | 427 | 350 | 438 | 551 | 452 | 394 | 414 | 469 | 644 | 645 | |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 1 | 25 | 28 | 28 | 28 | 36 | 28 | 36 | 36 | 28 | 29 | 36 | 28 | 36 | 36 | 29 | 36 | 36 | 28 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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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.










