
Surf Forecasts:
Keaulanas surf forecast from 6 Aug 2026:
- Best quality surf: Wednesday 12 Aug, 11AM (local time) - 3.5ft (1.0m), 18s period, S swell with cross-offshore winds.
- Most powerful swell: Thursday 13 Aug, 2AM (local time) - 4.5ft (1.4m), 16s period, S swell with 1,029 kJ wave energy.
- Next surfable swell (1★+): Thursday 6 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 Thursday (Aug 06) 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 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 1.3m 7s period and expected on Monday (Aug 10) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Thu 6th Aug) | 1.5ft (0.4m) 14s |
| Best Surf | 11AM (Wed 12th Aug) | 3.5ft (1.0m) 18s |
| Most Powerful | 2AM (Thu 13th Aug) | 4.5ft (1.4m) 16s |
Table - best surf conditions forecast for Keaulanas over the next 16 days.
The Lowdown
G’day, Rusty here. Let’s take a look at what Keaulanas is serving up over the next couple of weeks.
Overall, it’s a pretty mellow stretch of small, clean waves, with one standout session that’s worth marking on the calendar. Water temp is 81°, which is about normal for the season, so no surprises there. Don’t expect any heavy days; it’s more about quality than size.
Thursday the 6th and Friday the 7th are pretty ordinary. Tiny 1ft waves from the SSW, with a long 14 to 21 second period that’ll keep things lined up, but there’s just no punch. Combined energy is only 81 to 192 (weak), so you’re mostly floating. Winds are light and cross-off or offshore though, so it’s clean, but not really worth paddling out unless you’re desperate.
Saturday the 8th morning is where things start to look a little better. Swell bumps up to 2ft from the SSW, period 18 seconds, and energy jumps to 396 (moderate). Winds are offshore from the ENE at 16 mph, so expect clean little runners. This is the best of the first week, but it’s still small. Saturday afternoon drops off. Sunday the 9th is similar: 2ft, offshore winds, moderate energy – good for a longboard or a foiler.
Monday the 10th through Tuesday the 11th stay in that 2ft to 3ft range, with light cross-off breezes. Energy sits between 218 and 279 (weak to moderate). Conditions are clean, but the waves are just marginal. You’ll get a few, but nothing to write home about.
Now, here’s the standout. Wednesday the 12th morning. Swell hits 3ft from the S, with a solid 18-second period. Combined energy is 857 (moderate to strong). Winds are cross-off from the ENE at 9 mph, keeping it clean. This is the pick of the whole forecast. The long period means better shaped waves and longer gaps between sets, making it easier to get out the back. It’s still only intermediate-friendly at this size, but the quality should be there. Wednesday afternoon stays good but drops off slightly.
From Thursday the 13th onward, it’s a steady decline. Swell drops back to 2ft to 2ft through the rest of the second week, with winds picking up to 19 to 22 mph from the ENE, which creates bumpy, cross-off conditions. Energy drops to between 131 and 342 (weak to moderate). Nothing to get excited about.
There is a little glimmer on Tuesday the 18th morning. Swell is only 2ft from the S, but winds go glassy from the ESE at 3 mph. That’s about as clean as it gets. Energy is 212 (weak), so it’ll be tiny, but if you want a glassy dawn session on a log, that could be fun.
Overall, the only day that really stands out is Wednesday the 12th morning. Everything else is small and clean but pretty forgettable. Don’t expect any big surf, but the long-period swells will give you some nice, lined-up little waves if you pick your sessions right.
Rusty.
Short Range ForecastLight rain (total 2mm), mostly falling on Thu afternoon. Warm (max 28°C on Fri afternoon, min 24°C on Thu night). Wind will be generally light. | Days 4-6 Weather SummaryMostly dry. Warm (max 29°C on Tue afternoon, min 25°C on Sun morning). Wind will be generally light. | ||||||||||||||||||||
Thursday 6 | Friday 7 | Saturday 8 | Sunday 9 | Monday 10 | Tuesday 11 | Wednesday 12 | |||||||||||||||
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 | SSW 14 | SSW 14 | SW 21 | SW 20 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SW 16 | S 18 | SSW 16 | SSW 15 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | S 20 | S 18 | S 18 | S 16 |
Wave Graph | |||||||||||||||||||||
81 | 80 | 138 | 115 | 99 | 148 | 221 | 154 | 202 | 130 | 156 | 288 | 186 | 234 | 240 | 218 | 269 | 485 | 635 | 749 | 1029 | |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | off | cross-off | cross-off | off | cross-off | off | cross-off | cross-off | off | off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 11:13AM0.61m | 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 | ||||||||
Low Tide | 3:37AM0.07m | 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 | ||||||||||
6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:07 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | |
— | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:07 | — | — | 7:06 | — | — | 7:05 | — | — | 7:05 | — | |
mm | — | 2 | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 27 | 27 | 26 | 27 | 28 | 26 | 27 | 28 | 25 | 27 | 27 | 26 | 28 | 28 | 26 | 28 | 29 | 26 | 27 | 28 | 26 |
Feels °C | 30 | 30 | 27 | 28 | 28 | 26 | 26 | 27 | 25 | 28 | 27 | 27 | 29 | 29 | 27 | 29 | 29 | 26 | 28 | 28 | 26 |
Swell 1 Height (m) Direction Period (s) | NE 6 | NE 6 | SSW 14 | SSW 14 | SW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | NE 7 | SSW 12 | NE 6 | NE 6 | NE 7 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | S 18 | S 18 | S 16 |
20 | 19 | 138 | 77 | 91 | 108 | 175 | 102 | 99 | 57 | 85 | 47 | 39 | 49 | 240 | 218 | 269 | 243 | 635 | 749 | 1029 | |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSE 11 | SSE 11 | SSE 11 | SSW 19 | SSW 18 | SW 18 | SSW 17 | SSW 13 | S 18 | SSW 16 | SSW 15 | SSW 15 | SSE 9 | NE 7 | NE 7 | S 20 | SSW 13 | SSW 13 | NE 6 |
81 | 80 | 40 | 23 | 38 | 148 | 221 | 154 | 202 | 96 | 156 | 288 | 186 | 234 | 32 | 38 | 35 | 485 | 222 | 235 | 26 | |
Swell 3 Height (m) Direction Period (s) | SSE 11 | NNW 8 | NNW 7 | SW 21 | SW 20 | SSE 11 | SE 8 | SSE 10 | SSE 10 | SW 16 | SSW 16 | SSW 12 | SSW 12 | SSW 12 | NNW 8 | SSE 9 | SSE 8 | ENE 6 | ENE 6 | E 6 | SE 9 |
25 | 19 | 18 | 115 | 99 | 39 | 14 | 31 | 19 | 130 | 102 | 56 | 81 | 45 | 13 | 31 | 28 | 28 | 26 | 26 | 12 | |
Wind waves Height (m) Direction Period (s) | — | — | NE 8 | NE 5 | NE 5 | NE 6 | NE 6 | ENE 6 | ENE 7 | — | NE 7 | E 7 | — | — | NE 7 | E 7 | E 7 | — | — | E 7 | E 6 |
— | — | 28 | 12 | 11 | 31 | 42 | 46 | 76 | — | 73 | 186 | — | — | 38 | 131 | 88 | — | — | 59 | 66 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 6 | 2 | 0 | 0 | 2 | 2 | 2 | 2 | 2 | 0 | 2 | 0 | 2 | 2 |
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.











