Surf Forecasts:
Kewalos surf forecast from 15 Aug 2026:
- Best quality surf: Sunday 16 Aug, 11PM (local time) - 6ft (1.9m), 8s period, ENE swell with cross-offshore winds.
- Most powerful swell: Sunday 16 Aug, 2AM (local time) - 18ft (5.5m), 11s period, ENE swell with 6,455 kJ wave energy.
- Next surfable swell (1★+): Sunday 16 Aug, 11PM (local time) - 6ft (1.9m), 8s 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 (Aug 16) at 11PM. The primary swell is predicted to be 1.9m and 8s period with a secondary swell of 0.9m and 7s. 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 5.5m 11s and forecast to arrive on Sunday (Aug 16) 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 0.9m 6s period and expected on Thursday (Aug 20) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Best Surf | 11PM (Sun 16th Aug) | 6ft (1.9m) 8s |
| Most Powerful | 2AM (Sun 16th Aug) | 18ft (5.5m) 11s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, this is your local surf report with Rusty. Let’s have a look at what’s on offer.
We’re kicking off a pretty quiet stretch here at Kewalos. The water temp is sitting at 81°, which is bang on average for this time of year, so no surprises there. The next few days are looking rough, honestly. Friday afternoon (August 14) has a 7ft swell from the ENE with a short 8-second period, and the wind is a strong 25 mph cross-off. The combined energy is moderate (1028), but it’s a messy, marginal setup. Then Saturday and Sunday (August 15 and 16) get worse – big, blown-out, and poor. There’s a real lull here with no decent surf to speak of from Friday through to the following week.
From Monday (August 17) through to about Wednesday (August 26), the swell drops right off. We’re looking at knee-high, weak waves – mostly under 3ft from the S or SSW with long periods of 13 to 18 seconds. The energy is weak (between 298 and 968). The wind is generally cross-off or cross, but the waves are just too small to get excited about. It’s a long stretch of marginal, quiet conditions.
Now, the standout in this outlook comes at the very end. Thursday, August 27, afternoon and into Friday, August 28, things finally look promising. We’ve got a 4ft swell from the east with a long 17-second period, and the combined energy jumps to strong (1568 on Thursday afternoon, 1592 on Friday morning). The wind is light and clean – Thursday afternoon has a 3 mph cross-off (basically glassy), and Friday morning is a light 6 mph cross-off. This is going to produce clean, well-shaped waves at this reef break, best for experienced surfers. The swell direction (E) is not exactly the optimum SSE, but the quality of the conditions and the energy make it the best call of the whole forecast. Watch for long gaps between sets with that period, but the waves will have real push.
Friday afternoon (August 28) and Saturday (August 29) still have some decent 4ft to 4ft east swell, but the wind turns more cross-shore, and the quality drops back to marginal. Still worth a paddle if you’re keen.
So, if you’re after the best, hold out for Thursday afternoon, August 27, through Friday morning, August 28. That’s your window. Before that, it’s a long wait.
Rusty.
Short Range ForecastHeavy rain (total 30mm), heaviest during Sun morning. Warm (max 27°C on Fri afternoon, min 25°C on Fri night). Winds decreasing (near gales from the E on Sat night, light winds from the ENE by Sun night). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Mon afternoon, min 24°C on Mon night). Wind will be generally light. | |||||||||||||||||||
Fri 14 | Saturday 15 | Sunday 16 | Monday 17 | Tuesday 18 | Wednesday 19 | Thursday 20 | ||||||||||||||
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 | ENE 8 | ENE 8 | E 10 | ENE 11 | ENE 9 | ENE 8 | ENE 8 | S 14 | S 14 | ENE 7 | S 13 | S 13 | ENE 8 | ENE 8 | E 8 | ENE 7 | SSW 18 | SSW 17 | SW 16 |
Wave Graph  | ||||||||||||||||||||
 kJ | 555 | 984 | 1565 | 2407 | 6455 | 1297 | 676 | 408 | 334 | 260 | 170 | 165 | 119 | 143 | 163 | 100 | 193 | 207 | 200 | 274 |
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-on | 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 |
High Tide | 5:22PM0.62m | 6:06AM0.44m | 5:54PM0.53m | 6:57AM0.47m | 6:24PM0.45m | 7:54AM0.49m | 6:52PM0.37m | 8:59AM0.51m | 7:16PM0.30m | 10:13AM0.53m | 11:25AM0.56m | 10:11PM0.21m | ||||||||
Low Tide | 00:03AM0.04m | 11:43AM0.14m | 00:30AM0.05m | 12:43PM0.20m | 00:58AM0.06m | 1:59PM0.25m | 1:27AM0.08m | 3:56PM0.27m | 2:01AM0.10m | 2:47AM0.12m | 8:27PM0.20m | |||||||||
 |  |  |  |  | | | | | | | | | | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 7:01 | — | — | 7:00 | — | — | 7:00 | — | — | 7:00 | — | — | 6:59 | — | — | 6:58 | — | — | 6:57 | — |
mm | — | — | 1 | — | 8 | 16 | 4 | 1 | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 25 | 26 | 26 | 26 | 26 | 27 | 26 | 26 | 26 | 25 | 25 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 26 |
Feels °C | 24 | 23 | 23 | 21 | 22 | 22 | 28 | 28 | 25 | 25 | 24 | 24 | 24 | 25 | 25 | 25 | 25 | 26 | 27 | 28 |
Swell 1 Height (m) Direction Period (s) | S 14 | S 14 | S 13 | S 13 | S 14 | ENE 9 | ENE 8 | ENE 8 | S 14 | S 14 | ENE 7 | S 13 | S 13 | S 13 | SW 16 | E 8 | E 8 | E 8 | E 8 | ENE 8 |
| kJ | 411 | 306 | 225 | 168 | 184 | 1297 | 676 | 408 | 334 | 260 | 158 | 165 | 119 | 116 | 129 | 84 | 82 | 74 | 90 | 173 |
Swell 2 Height (m) Direction Period (s) | E 11 | W 11 | W 11 | W 13 | S 18 | S 13 | SSE 7 | S 14 | S 6 | SSE 5 | S 13 | SW 17 | SW 18 | SW 18 | S 12 | SSW 16 | NE 6 | NE 7 | NNE 7 | SW 16 |
| kJ | 62 | 9 | 9 | 30 | 56 | 157 | 203 | 246 | 16 | 10 | 170 | 74 | 80 | 79 | 44 | 100 | 61 | 46 | 41 | 274 |
Swell 3 Height (m) Direction Period (s) | W 12 | SSW 17 | SW 17 | S 16 | W 13 | S 16 | S 13 | SSE 6 | WSW 5 | SSW 19 | E 9 | W 13 | W 13 | W 12 | NNE 7 | S 12 | SW 16 | SSW 18 | SSW 17 | S 15 |
| kJ | 11 | 29 | 12 | 43 | 30 | 188 | 166 | 41 | 3 | 37 | 25 | 14 | 31 | 25 | 9 | 45 | 129 | 207 | 200 | 38 |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 8 | ENE 8 | E 10 | ENE 11 | SSE 7 | SSE 7 | — | ENE 8 | ENE 7 | — | ENE 7 | ENE 7 | ENE 8 | ENE 8 | NE 7 | ENE 7 | — | — | — |
| kJ | 555 | 984 | 1565 | 2407 | 6455 | 222 | 334 | — | 250 | 231 | — | 164 | 99 | 143 | 163 | 44 | 193 | — | — | — |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 130 | 198 | 131 | 198 | 198 | 129 | 42 | 0 | 29 | 28 | 28 | 28 | 1 | 28 | 3 | 1 | 0 | 3 | 1 | 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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