
Surf Forecasts:
Keaulanas surf forecast from 7 Aug 2026:
- Best quality surf: Thursday 13 Aug, 5AM (local time) - 4.5ft (1.4m), 16s period, S swell with offshore winds.
- Most powerful swell: Thursday 13 Aug, 5AM (local time) - 4.5ft (1.4m), 16s period, S swell with 1,017 kJ wave energy.
- Next surfable swell (1★+): Friday 7 Aug, 11AM (local time) - 1.5ft (0.4m), 14s period with SSW swell.
Best Forecast Surf Conditions for Keaulanas this week:
The surf forecast for Keaulanas over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Aug 07) at 11AM. The primary swell is predicted to be 0.4m and 14s period. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at Keaulanas in the next 16 days are 1.4m 16s and forecast to arrive on Thursday (Aug 13) at 5AM. Winds are predicted to be offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 1.1m 8s period and expected on Monday (Aug 10) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Fri 7th Aug) | 1.5ft (0.4m) 14s |
| Best Surf | 5AM (Thu 13th Aug) | 4.5ft (1.4m) 16s |
| Most Powerful | 5AM (Thu 13th Aug) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Keaulanas over the next 16 days.
The Lowdown
Alright folks, Rusty here. Let’s have a look at what’s on the menu for the next couple of weeks at Keaulanas.
Right off the bat, we’re looking at a pretty slow start. The first few days have some waves, but they’re small and the conditions aren’t really coming together for a proper session. Friday morning (August 7th) you’ve got a tiny 1ft SSW swell but the wind is cross-off, making it clean but weak. The combined energy is a measly 77, so it’s barely pushing through. It’s a real struggle to get excited about that.
Saturday afternoon (August 8th) is where things start to show a little life. The wind shifts to offshore, which is a big plus, and the swell ticks up to 2ft from the SW. The energy jumps to 274, and the period is a nice long 18 seconds – that’s proper groundswell. The water temp is sitting at 81°, which is about average for this time of year, so no surprises there. This is a clean, workable wave if you’re on a log, but it’s still not a standout.
The best stuff is definitely waiting for us in the second week. Hang in there, because from the morning of Wednesday, August 19th, it gets real good. Wednesday morning we’ve got glassy conditions with a 2ft SW swell and a period of 24 seconds – that’s a very long period groundswell. The energy is 342. This is the kind of swell that will wrap beautifully into Keaulanas, but with that kind of period, it’s going to be best on the reef sections. The crowds are listed as “sometimes,” so you might have some company, but it won’t be a circus.
But the absolute pick of the fortnight? Thursday, August 20th. Both the morning and afternoon sessions are glassy, with the wind going calm or very light. The swell builds to 3ft from the SW with a 19-second period in the afternoon, and the energy jumps to 658. That’s a solid, powerful wave with zero wind. This is the day to call in sick. The combined energy is moderate, but the quality will be top notch. The morning of Friday, August 21st is also a treat – glassy, 3ft SW, and a 535 energy score. It’s a real small window of perfection before the wind picks up again on Saturday.
So, the moral of the story: don’t bother with the first week and a half unless you’re desperate for a wobble. The real magic is on the 20th and 21st of August. That’s where you want to be.
Rusty.
Short Range ForecastMostly dry. Warm (max 28°C on Fri afternoon, min 25°C on Fri night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Mon afternoon, min 24°C on Tue night). Wind will be generally light. | ||||||||||||||||||||
Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | Thursday 13 | |||||||||||||||
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) | SSW 14 | SW 20 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | S 20 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 |
Wave Graph | |||||||||||||||||||||
77 | 99 | 148 | 221 | 154 | 202 | 130 | 156 | 288 | 186 | 234 | 240 | 222 | 269 | 373 | 515 | 613 | 890 | 868 | 662 | 636 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | off | off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | off | off | off | off |
High Tide | 12:19PM0.67m | 10:17PM0.21m | 1:14PM0.73m | 00:29AM0.20m | 2:02PM0.77m | 1:39AM0.23m | 2:45PM0.79m | 2:33AM0.27m | 3:24PM0.79m | 3:22AM0.32m | 4:00PM0.76m | 4:10AM0.37m | 4:33PM0.71m | 4:57AM0.42m | |||||||
Low Tide | 9:32PM0.21m | 9:20PM0.17m | 6:00AM0.03m | 9:41PM0.14m | 7:02AM0.01m | 10:06PM0.12m | 7:57AM0.01m | 10:31PM0.10m | 8:49AM0.02m | 10:56PM0.10m | 9:38AM0.06m | 11:20PM0.09m | |||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | — | 7:04 | — | |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 28 | 26 | 27 | 28 | 25 | 27 | 28 | 26 | 28 | 29 | 26 | 28 | 28 | 25 | 27 | 28 | 25 | 28 | 28 | 26 |
Feels °C | 28 | 29 | 27 | 27 | 27 | 24 | 28 | 28 | 27 | 29 | 29 | 26 | 27 | 26 | 24 | 25 | 26 | 24 | 26 | 26 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 7 | SW 14 | NE 5 | SSW 14 | SSW 13 | SSW 13 | SSW 13 | SSW 12 | SSW 16 | NE 7 | SSW 15 | NE 7 | NE 7 | SSW 14 | SSW 13 | S 18 | S 18 | S 16 | S 16 | S 15 | S 15 |
27 | 91 | 23 | 175 | 120 | 137 | 96 | 85 | 288 | 55 | 234 | 54 | 47 | 269 | 299 | 515 | 613 | 890 | 868 | 662 | 636 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SW 20 | SSW 14 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 12 | SSW 15 | SSW 12 | SSW 15 | SSW 15 | SSE 9 | NE 6 | SSW 13 | SSW 13 | SE 8 | SE 7 | W 12 | ESE 8 |
77 | 99 | 108 | 221 | 154 | 202 | 130 | 156 | 56 | 186 | 45 | 240 | 222 | 30 | 40 | 289 | 269 | 15 | 12 | 11 | 24 | |
Swell 3 Height (m) Direction Period (s) | SSE 11 | S 11 | SSW 19 | SE 6 | SSE 10 | SSE 10 | SSW 18 | SW 16 | NNW 10 | SSW 12 | SSE 10 | SSE 9 | SSW 11 | S 21 | S 20 | SE 8 | SE 9 | WNW 12 | WNW 12 | SSE 9 | W 11 |
23 | 20 | 148 | 10 | 31 | 19 | 102 | 127 | 33 | 81 | 36 | 33 | 41 | 79 | 373 | 18 | 13 | 28 | 28 | 8 | 10 | |
Wind waves Height (m) Direction Period (s) | E 5 | NE 5 | ENE 6 | NE 6 | NE 6 | ENE 6 | ENE 7 | NE 7 | NE 7 | — | NE 7 | E 8 | E 7 | NE 6 | E 7 | ENE 6 | NE 6 | NE 6 | NE 6 | NE 6 | NE 6 |
19 | 7 | 31 | 33 | 45 | 64 | 64 | 64 | 88 | — | 62 | 138 | 131 | 40 | 124 | 49 | 56 | 53 | 51 | 68 | 66 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 2 | 2 | 2 | 0 | 0 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 5 | 2 | 2 | 5 | 0 | 11 | 11 | 0 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the Keaulanas Surf forecast
The above surf forecast table for Keaulanas provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Keaulanas can be found by selecting the local surf guide option on the grey menu. Our Keaulanas 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 (Keaulanas) 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 Keaulanas 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.
Keaulanas is 7 km (4 miles) from Makakilo City. If you plan a vacation in Oahu, look for hotels and other accommodation in Makakilo City. Makakilo City has rooms for a wide range of budgets as well as car hire and transport links.











