Surf Forecasts:
Kewalos surf forecast from 31 Aug 2026:
- Most powerful swell: Saturday 5 Sep, 11AM (local time) - 8ft (2.5m), 14s period, ENE swell with 2,285 kJ wave energy.
Best Forecast Surf Conditions for Kewalos this week:
The most powerful waves expected at Kewalos in the next 16 days are 2.5m 14s and forecast to arrive on Saturday (Sep 05) at 11AM. Winds are predicted to be cross-offshore at the time the swell arrives.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Sat 5th Sep) | 8ft (2.5m) 14s |
Table - best surf conditions forecast for Kewalos over the next 16 days.
The Lowdown
Alright, folks, let's talk about the next couple of weeks. We've got one option on the table: Kewalos. It's a solid, consistent reef break, but we're fighting the wrong swell direction. It wants a SSE swell, but we're getting hammered by a persistent ENE windswell. The water's a warm 81°, which is dead average for this time of year, so that's a plus.
The whole thing starts off slow. From Monday, August 31st, through Thursday, September 3rd, it's a mix of marginal and poor conditions. We're looking at 7 ft to 8 ft of short-period, wind-driven swell (7-8 seconds), with moderate energy. The wind is a cross-offshore fresh breeze, so the faces are clean, but the wave quality is off. It's a lot of work for a crummy wave.
Friday, September 4th, sees the swell peak at 10 ft in the morning, pushing strong energy, but it's still that same short-period junk. The wind is a strong breeze, making it bumpy and wild. At that size and quality, it's really for experts only, and honestly, it looks more like a kitesurfing session than a good surf.
The weekend of September 5th and 6th is a little better. The swell drops to 8-8 ft, but the period stretches out to 13-14 seconds. That's a real groundswell, and the energy is strong to very strong. The wind is still a fresh cross-off. The waves will have more power, but the direction is still wrong. It's a marginal call, but the Saturday afternoon with a 15 mph moderate breeze and Sunday morning might offer a few more lined-up waves.
The standout is Monday, September 7th. The swell is 8 ft with a 12-second period, and the wind swings to a moderate NNE breeze, going offshore. That's the cleanest wind we've seen. The energy is strong. The forecast calls it "excellent surf conditions for experienced surfers." This is the day. The offshore wind will make the most of that ENE groundswell, giving you clean, powerful walls at the reef. Expect crowds to be likely.
After that, it's a total wipeout. Tuesday, September 8th, drops to 3 ft with a southerly wind shift and thunderstorms. A complete loss. From the 9th to the 15th, it's a slow, painful fade into flatness, with swell dropping from 7 ft all the way down to 2 ft, and energy levels dropping to weak. The wind stays a fresh or strong cross-off, keeping the tiny leftovers clean but useless.
Bottom line: if you have to pick a day, make it Monday the 7th. The weekend before might have some grunt, but it's a gamble. The rest of the month is a long, flat spell.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Tue afternoon, min 25°C on Mon morning). Mainly strong winds. | Days 4-6 Weather SummarySome drizzle, heaviest during Sat night. Warm (max 27°C on Sat morning, min 25°C on Thu morning). Mainly strong winds. | ||||||||||||||||||||
Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | Friday 4 | Saturday 5 | Sunday 6 | |||||||||||||||
AM | 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 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | E 14 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | ENE 12 |
Wave Graph | |||||||||||||||||||||
405 | 428 | 439 | 475 | 487 | 475 | 439 | 414 | 768 | 828 | 744 | 1145 | 1128 | 727 | 515 | 2285 | 1893 | 2123 | 1808 | 1703 | 1824 | |
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 | cross-off |
High Tide | 5:48PM0.44m | 7:14AM0.56m | 6:20PM0.36m | 8:21AM0.59m | 6:54PM0.28m | 9:39AM0.62m | 7:57PM0.22m | 10:58AM0.66m | 10:35PM0.19m | 12:05PM0.69m | 00:18AM0.21m | 1:00PM0.73m | 1:21AM0.26m | ||||||||
Low Tide | 12:22PM0.19m | 00:10AM0.05m | 1:40PM0.23m | 00:43AM0.05m | 3:38PM0.25m | 1:25AM0.06m | 6:22PM0.22m | 2:24AM0.08m | 7:30PM0.17m | 3:46AM0.09m | 8:03PM0.13m | 5:11AM0.08m | 8:31PM0.10m | ||||||||
6:13 | — | — | 6:13 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:15 | — | — | 6:16 | — | — | |
— | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — | — | 6:44 | — | — | 6:43 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 26 | 26 | 25 | 26 | 27 | 26 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 26 | 25 | 27 | 27 | 26 | 27 | 27 | 26 |
Feels °C | 23 | 23 | 22 | 24 | 25 | 24 | 25 | 24 | 22 | 22 | 21 | 21 | 22 | 22 | 22 | 26 | 25 | 26 | 25 | 25 | 25 |
Swell 1 Height (m) Direction Period (s) | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | SSE 13 | SSE 12 | SSE 12 | S 11 | S 11 | S 10 | S 10 | SSW 10 | ENE 13 | SSW 10 | ENE 12 |
144 | 138 | 192 | 333 | 314 | 364 | 422 | 318 | 279 | 206 | 206 | 333 | 494 | 358 | 491 | 367 | 314 | 206 | 1808 | 138 | 1824 | |
Swell 2 Height (m) Direction Period (s) | S 11 | S 11 | S 10 | SSW 14 | S 12 | S 10 | SSE 10 | S 11 | E 13 | SE 13 | S 14 | SSW 14 | SW 12 | E 14 | E 14 | SW 18 | SSW 18 | SSW 16 | SSW 11 | SSW 16 | SSW 18 |
57 | 55 | 50 | 80 | 77 | 35 | 19 | 41 | 123 | 88 | 198 | 61 | 6 | 357 | 515 | 78 | 120 | 102 | 222 | 229 | 340 | |
Swell 3 Height (m) Direction Period (s) | S 21 | SSW 19 | SW 14 | S 10 | SW 14 | SW 14 | SW 14 | E 14 | S 11 | S 10 | E 12 | SW 18 | SW 18 | SW 13 | SSW 20 | NNE 10 | NNE 10 | S 12 | SSW 16 | SSE 12 | SW 10 |
34 | 122 | 54 | 30 | 52 | 51 | 30 | 66 | 38 | 18 | 107 | 12 | 12 | 27 | 38 | 10 | 19 | 46 | 171 | 45 | 102 | |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 14 | ENE 13 | ENE 13 | ENE 13 | ENE 12 | — |
405 | 428 | 439 | 475 | 487 | 475 | 439 | 414 | 768 | 828 | 744 | 1145 | 1128 | 727 | 512 | 2285 | 1893 | 2123 | 1060 | 1703 | — | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 42 | 36 | 28 | 29 | 129 | 28 | 36 | 41 | 36 | 130 | 129 | 130 | 45 | 45 | 36 | 28 | 29 | 28 | 36 | 36 | 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.











