Surf Forecasts:
Kewalos surf forecast from 20 Jul 2026:
- Most powerful swell: Sunday 26 Jul, 2PM (local time) - 5ft (1.6m), 16s period, E swell with 1,285 kJ wave energy.
Best Forecast Surf Conditions for Kewalos this week:
The most powerful waves expected at Kewalos in the next 16 days are 1.6m 16s and forecast to arrive on Sunday (Jul 26) 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 0.6m 8s period and expected on Monday (Jul 20) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 2PM (Sun 26th Jul) | 5ft (1.6m) 16s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, let’s break it down for Kewalos over the next couple of weeks. I’ll be honest – it’s not a classic run. The swell is mostly coming from the ENE, which isn’t the ideal direction for this reef (we’d prefer SSE). Water temp is around 80°F right now, which is normal for this time of year – no worries there.
The first few days, from Sunday the 19th through Wednesday the 23rd, are pretty much a bust. Small, weak swell – mostly under 3 ft – with a fresh to strong cross-off wind that keeps it clean but gutless. The combined energy stays in the moderate range (456 to 965), and the short periods (8–12s) don’t help. You’d be struggling to find a ride.
Then from Thursday the 24th through Saturday the 26th, the size jumps. We’re looking at 6–8 ft on Thursday and Friday, but the period is short (7–8s) and the wind is still a stiff 18–25 mph cross-off. The energy is strong (1052–1277), but that short-period chop will make it bumpy. For a reef that likes longer lines, this is more of a power session than a smooth one. Advanced surfers can handle it, but beginners should stay out – anything over 5 ft is pushing it.
Sunday the 26th and Monday the 27th bring a shift: the swell drops to 5 ft, but the period stretches to 14–16 seconds – that’s proper groundswell. The energy is high (2037–2094), and the wind is still a moderate to fresh cross-off. The long period will make the reef stand up, but the cross-off angle might
Short Range ForecastMostly dry. Warm (max 27°C on Sun afternoon, min 24°C on Sun night). Mainly fresh winds. | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Wed afternoon, min 24°C on Wed night). Mainly strong winds. | |||||||||||||||||||
Sun 19 | Monday 20 | Tuesday 21 | Wednesday 22 | Thursday 23 | Friday 24 | Saturday 25 | ||||||||||||||
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) | ENE 8 | E 8 | ENE 8 | S 16 | S 15 | S 14 | S 14 | ENE 7 | ENE 7 | SSW 23 | SSW 22 | SSW 20 | ENE 7 | SSW 18 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | SSW 18 | E 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 277 | 221 | 199 | 321 | 339 | 329 | 246 | 227 | 138 | 426 | 363 | 412 | 395 | 464 | 529 | 637 | 689 | 459 | 572 | 732 |
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 | 7:45PM0.43m | 10:04AM0.43m | 8:19PM0.34m | 11:13AM0.49m | 8:56PM0.27m | 12:12PM0.54m | 10:06PM0.22m | 1:02PM0.59m | 11:46PM0.19m | 1:44PM0.62m | 00:59AM0.18m | 2:22PM0.66m | 1:51AM0.19m | |||||||
Low Tide | 2:03PM0.22m | 2:48AM0.03m | 3:52PM0.27m | 3:23AM0.04m | 6:20PM0.26m | 4:02AM0.05m | 8:25PM0.21m | 9:13PM0.17m | 5:34AM0.05m | 9:41PM0.14m | 6:23AM0.04m | 10:05PM0.12m | ||||||||
 |  | | | | | | | | | | | | | | | | | |  | |
 | — | — | 6:00 | — | — | 6:00 | — | — | 6:00 | — | — | 6:01 | — | — | 6:01 | — | — | 6:01 | — | — |
 | 7:15 | — | — | 7:15 | — | — | 7:15 | — | — | 7:14 | — | — | 7:14 | — | — | 7:13 | — | — | 7:13 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 26 | 27 | 25 | 26 | 27 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 |
Feels °C | 24 | 23 | 25 | 25 | 24 | 24 | 25 | 23 | 22 | 23 | 23 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 23 | 22 |
Swell 1 Height (m) Direction Period (s) | S 12 | NNE 8 | S 14 | S 16 | S 15 | S 14 | S 14 | S 13 | E 12 | E 11 | E 12 | SSW 20 | SSW 20 | SSW 18 | SSW 18 | SSW 17 | SSW 16 | SSW 19 | SSW 18 | E 16 |
| kJ | 73 | 44 | 142 | 321 | 339 | 329 | 246 | 219 | 138 | 123 | 139 | 412 | 395 | 464 | 329 | 340 | 232 | 391 | 572 | 732 |
Swell 2 Height (m) Direction Period (s) | S 18 | SSW 12 | S 16 | SW 18 | SW 16 | SW 17 | SW 16 | E 13 | S 13 | SSW 23 | S 13 | S 12 | S 11 | E 11 | S 12 | S 12 | S 20 | SSW 16 | E 15 | SSW 18 |
| kJ | 106 | 44 | 135 | 81 | 69 | 72 | 67 | 121 | 128 | 426 | 157 | 99 | 93 | 57 | 105 | 69 | 299 | 198 | 153 | 547 |
Swell 3 Height (m) Direction Period (s) | W 12 | S 18 | SW 18 | W 12 | E 12 | E 12 | E 11 | SW 15 | S 11 | S 13 | SSW 22 | SSW 16 | SW 16 | S 11 | SSW 15 | S 21 | S 12 | E 16 | S 11 | S 11 |
| kJ | 25 | 97 | 83 | 11 | 12 | 25 | 40 | 60 | 56 | 125 | 363 | 99 | 127 | 56 | 89 | 231 | 69 | 125 | 61 | 21 |
Wind waves Height (m) Direction Period (s) | ENE 8 | E 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 277 | 221 | 199 | 234 | 191 | 153 | 181 | 227 | 132 | 144 | 240 | 307 | 350 | 444 | 529 | 637 | 689 | 459 | 425 | 522 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 133 | 1 | 1 | 28 | 1 | 28 | 28 | 28 | 28 | 36 | 28 | 36 | 129 | 36 | 38 | 130 | 29 | 28 | 129 | 28 |
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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