Surf Forecasts:
Kewalos surf forecast from 31 Jul 2026:
- Best quality surf: Wednesday 5 Aug, 2AM (local time) - 4.5ft (1.4m), 10s period, ENE swell with cross-offshore winds.
- Most powerful swell: Saturday 1 Aug, 8AM (local time) - 10ft (3.0m), 8s period, E swell with 1,220 kJ wave energy.
- Next surfable swell (1★+): Wednesday 5 Aug, 2AM (local time) - 4.5ft (1.4m), 10s 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 Wednesday (Aug 05) at 2AM. The primary swell is predicted to be 1.4m and 10s period with a secondary swell of 0.4m and 11s. 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 8s and forecast to arrive on Saturday (Aug 01) at 8AM. 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 5s period and expected on Wednesday (Aug 05) at 5PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 2AM (Wed 5th Aug) | 4.5ft (1.4m) 10s |
| Best Surf | 2AM (Wed 5th Aug) | 4.5ft (1.4m) 10s |
| Most Powerful | 8AM (Sat 1st Aug) | 10ft (3.0m) 8s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, Rusty here. Let’s break down what’s happening for the next couple of weeks.
We’re looking at a bit of a slow start, with the first real chance for a wave not showing up until the morning of August 4th. Before that, it’s pretty flat and messy. But once we hit that first week of August, things get a little more promising.
Kewalos is the only break in the forecast. It’s a consistent reef that’s exposed to SSE swell. The water temperature is about 80°, with a small anomaly of 0.5°, so it’s average for the time of year.
The best window is the morning of Tuesday, August 4th. The wind is light and cross-off from the ENE, keeping the surface glassy. The swell is 5ft from the ENE, but the real story is the period – 12 seconds. That’s long-period groundswell, and at a reef like Kewalos, it’ll produce some nice, lined-up waves. The combined energy is moderate (706). This is the clear standout of the whole forecast. The morning of the 5th is also decent, with 4ft and a 9-second period, still with clean wind.
After the 5th, the swell fades and the wind cranks up, making it tough. There’s a pulse of very long-period SSW swell around the 10th of August, but it’s only 3ft with a 16-second period. That could produce some beautiful lines, but the wind is strong and the energy is moderate (1158). It’s a long way out, so don’t bank on it.
If you’ve got to pick a day, the morning of the 4th is the one. Clean, solid, and with proper groundswell.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Thu afternoon, min 25°C on Thu night). Winds increasing (light winds from the ENE on Thu night, strong winds from the ENE by Fri night). | Days 5-7 Weather SummaryMostly dry. Warm (max 27°C on Tue afternoon, min 24°C on Mon night). Winds decreasing (fresh winds from the ENE on Sun afternoon, light winds from the ENE by Tue night). | |||||||||||||||||||
Thu 30 | Friday 31 | Saturday 1 | Sunday 2 | Monday 3 | Tuesday 4 | Wednesday 5 | ||||||||||||||
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 18 | ENE 7 | E 8 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 12 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 207 | 220 | 329 | 469 | 1015 | 1142 | 939 | 1098 | 844 | 782 | 554 | 394 | 339 | 824 | 648 | 505 | 373 | 266 | 92 | 147 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | 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 | 4:58PM0.68m | 5:11AM0.31m | 5:26PM0.64m | 5:57AM0.34m | 5:55PM0.59m | 6:49AM0.38m | 6:24PM0.52m | 7:47AM0.42m | 6:55PM0.44m | 8:56AM0.47m | 7:27PM0.36m | 10:11AM0.53m | 8:07PM0.29m | |||||||
Low Tide | 11:58PM0.07m | 10:29AM0.06m | 00:22AM0.06m | 11:14AM0.11m | 00:48AM0.05m | 12:06PM0.16m | 1:15AM0.04m | 1:14PM0.22m | 1:46AM0.04m | 2:52PM0.27m | 2:23AM0.03m | 5:19PM0.27m | 3:10AM0.03m | |||||||
 |  | |  |  | | | | | | | | | |  | |  | |  | | |
 | — | — | 6:03 | — | — | 6:03 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — | 6:05 | — | — |
 | 7:10 | — | — | 7:09 | — | — | 7:09 | — | — | 7:08 | — | — | 7:08 | — | — | 7:07 | — | — | 7:07 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — |
Temp °C | 28 | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 28 | 27 | 24 | 22 | 22 | 22 | 21 | 22 | 22 | 22 | 22 | 24 | 24 | 23 | 27 | 28 | 27 | 29 | 27 | 27 |
Swell 1 Height (m) Direction Period (s) | ENE 8 | S 13 | S 12 | E 16 | E 15 | E 15 | E 14 | E 14 | E 14 | E 14 | E 13 | E 13 | E 13 | ENE 12 | ENE 12 | ENE 11 | ENE 10 | ENE 9 | ENE 9 | ENE 8 |
| kJ | 181 | 166 | 153 | 301 | 267 | 267 | 257 | 194 | 188 | 142 | 125 | 119 | 163 | 824 | 648 | 505 | 373 | 266 | 92 | 147 |
Swell 2 Height (m) Direction Period (s) | S 13 | SSW 16 | E 15 | SW 15 | SW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 12 | SSW 11 | SSW 11 | SSW 15 | SW 14 |
| kJ | 171 | 177 | 159 | 239 | 220 | 127 | 123 | 131 | 133 | 67 | 57 | 32 | 32 | 48 | 46 | 45 | 41 | 40 | 88 | 53 |
Swell 3 Height (m) Direction Period (s) | SSW 18 | E 16 | SW 16 | S 12 | SSW 12 | S 12 | S 11 | S 11 | N 9 | N 9 | SW 13 | SW 13 | SW 12 | SSE 9 | SSE 8 | SSE 14 | SW 15 | SW 16 | SSW 11 | S 12 |
| kJ | 207 | 127 | 206 | 106 | 47 | 42 | 39 | 22 | 16 | 13 | 42 | 42 | 38 | 16 | 12 | 63 | 57 | 61 | 39 | 45 |
Wind waves Height (m) Direction Period (s) | — | ENE 7 | E 8 | ENE 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | — | — | — | SE 6 | E 5 | ENE 6 |
| kJ | — | 220 | 329 | 469 | 1015 | 1142 | 939 | 1098 | 844 | 782 | 554 | 394 | 339 | 370 | — | — | — | 33 | 58 | 54 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 36 | 1 | 36 | 42 | 130 | 133 | 129 | 132 | 42 | 38 | 31 | 36 | 31 | 1 | 4 | 1 | 0 | 0 | 3 | 1 |
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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