Surf Forecasts:
ADs/Doubles surf forecast from 21 Aug 2026:
- Most powerful swell: Thursday 27 Aug, 11AM (local time) - 4ft (1.2m), 17s period, S swell with 861 kJ wave energy.
Best Forecast Surf Conditions for ADs/Doubles this week:
The most powerful waves expected at ADs/Doubles in the next 16 days are 1.2m 17s and forecast to arrive on Thursday (Aug 27) at 11AM. Winds are predicted to be cross-onshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 17s period and expected on Friday (Aug 21) at 2PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Thu 27th Aug) | 4ft (1.2m) 17s |
Table - best surf conditions forecast for ADs/Doubles over the next 16 days.
The Lowdown
Alright, Rusty here with a look at ADs/Doubles across the next couple of weeks. And I gotta tell ya, it's a strange one.
First off, the water's sittin' at a pretty standard 80°F for this time of year; nothing unusual there. But the outlook itself… well, we’ve got a long, long wait ahead. From now until the end of August, the models are showin’ nothing but messy, onshore conditions with this constant ENE wind. It’s a real dry spell. The swell’s there, but it's short-period, lumpy windswell that just can't get any shape with that cross-shore breeze. You’ll get to the end of the month before anything even looks close to rideable.
Then we jump into the first week of September and things get weird. Monday the 31st of August there's a huge pulse of swell in the forecast — we're talking 10 to 13 feet — and the combined wave energy is a massive 2525 to 3418, so there's plenty of grunt. The model even says wind and tide are favorable, but here's the thing: that swell is simply too big for this break. Unless you're a tow-in specialist or a madman on a gun, you're gonna wanna sit that one out. Heavy onshore winds follow that up, so the whole thing becomes a bit of a washout for paddling.
There's a glimmer late in the outlook on the 5th of September, a Saturday, where the wind drops to a light breeze. The wind is still cross-onshore, mind, but it might be just enough to offer up a very marginal wave. With the swell from the ENE at 5 feet and a period of 11 seconds, and combined energy at 743, it’s going to be weak and choppy. For the die-hards, a longboard or a foiler might find something, but for a proper surf, you'd be floggin' a dead horse.
Honestly, for the next two weeks, this setup looks way more interesting for kite surfing than paddle surfing with all that cross-shore wind. I can't in good faith point you to a standout session here. Sometimes it goes like that. A blank run is more normal for the area, but it’ll turn around eventually. Keep checkin’ the charts.
Rusty.
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Sat night). Winds increasing (calm on Fri morning, strong winds from the ENE by Sat night). | Days 4-6 Weather SummaryMostly dry. Warm (max 26°C on Mon morning, min 25°C on Mon morning). Mainly fresh winds. | ||||||||||||||||||||
Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | Wednesday 26 | Thursday 27 | |||||||||||||||
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) | NE 7 | NE 7 | SSW 16 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | SSW 14 | ENE 7 | E 7 | E 8 | ENE 7 | ENE 7 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
Wave Graph  | |||||||||||||||||||||
 kJ | 96 | 106 | 322 | 225 | 301 | 465 | 327 | 290 | 201 | 168 | 232 | 278 | 324 | 310 | 277 | 218 | 307 | 347 | 861 | 417 | 590 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross-on | cross | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross-on | cross-on | cross | cross |
High Tide | 11:21AM0.57m | 10:59PM0.20m | 12:10PM0.60m | 00:02AM0.21m | 12:51PM0.62m | 00:45AM0.24m | 1:26PM0.65m | 1:20AM0.27m | 1:56PM0.66m | 1:55AM0.30m | 2:25PM0.67m | 2:30AM0.34m | 2:53PM0.66m | 3:07AM0.39m | |||||||
Low Tide | 7:49PM0.17m | 4:20AM0.10m | 8:09PM0.14m | 5:23AM0.08m | 8:29PM0.12m | 6:13AM0.06m | 8:49PM0.11m | 6:56AM0.04m | 9:09PM0.10m | 7:36AM0.04m | 9:29PM0.09m | 8:15AM0.04m | 9:49PM0.07m | ||||||||
 |  |  | | | | | | | | |  | | | | | | | | | | |
 | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 26 | 27 | 27 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 30 | 29 | 28 | 26 | 24 | 22 | 24 | 23 | 23 | 24 | 24 | 26 | 25 | 23 | 23 | 21 | 22 | 23 | 24 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | NE 7 | SW 16 | SSW 16 | SW 16 | SW 16 | SSW 16 | SSW 15 | SSW 15 | E 8 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | SSW 12 | SSW 15 | SSW 14 | S 18 | S 19 | S 17 | S 16 | S 16 |
| kJ | 96 | 264 | 322 | 261 | 255 | 215 | 146 | 191 | 51 | 168 | 156 | 129 | 85 | 85 | 121 | 215 | 307 | 347 | 861 | 417 | 590 |
Swell 2 Height (m) Direction Period (s) | SW 17 | W 10 | W 10 | SSE 12 | SSE 12 | S 14 | S 13 | SSE 13 | SW 14 | SSE 12 | E 8 | S 12 | SSW 16 | S 16 | SSW 12 | S 18 | SSW 13 | SSW 13 | N 8 | S 12 | E 16 |
| kJ | 295 | 32 | 31 | 50 | 50 | 104 | 90 | 58 | 100 | 50 | 51 | 71 | 146 | 127 | 56 | 165 | 98 | 98 | 6 | 72 | 176 |
Swell 3 Height (m) Direction Period (s) | W 11 | E 8 | S 13 | WNW 10 | WNW 10 | WNW 10 | NW 11 | NW 12 | SSE 13 | NW 12 | SSE 12 | SSW 17 | SSE 12 | SSE 6 | SSW 18 | SSE 12 | SSE 12 | SSW 16 | WNW 10 | E 17 | N 8 |
| kJ | 21 | 21 | 54 | 32 | 33 | 19 | 31 | 35 | 56 | 35 | 48 | 94 | 28 | 12 | 109 | 27 | 27 | 50 | 10 | 87 | 11 |
Wind waves Height (m) Direction Period (s) | — | NE 7 | ENE 7 | ENE 7 | ENE 7 | E 7 | ENE 7 | ENE 7 | ENE 6 | ENE 6 | ENE 7 | E 7 | E 8 | ENE 7 | ENE 7 | ENE 6 | ENE 7 | ENE 6 | ENE 7 | ENE 7 | ENE 6 |
| kJ | — | 106 | 189 | 225 | 301 | 465 | 327 | 290 | 201 | 159 | 232 | 278 | 324 | 310 | 277 | 218 | 163 | 160 | 147 | 147 | 112 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 7 | 16 | 41 | 56 | 58 | 56 | 56 | 56 | 49 | 56 | 56 | 49 | 50 | 56 | 49 | 56 | 50 | 49 | 49 | 49 | 49 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
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Information about the ADs/Doubles Surf forecast
The above surf forecast table for ADs/Doubles provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at ADs/Doubles can be found by selecting the local surf guide option on the grey menu. Our ADs/Doubles 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 (ADs/Doubles) 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 ADs/Doubles 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.
ADs/Doubles is 14 km (9 miles) from the city of Kailua. If you plan a vacation in Oahu, look for hotels and other accommodation in Kailua. Kailua has rooms for a wide range of budgets as well as car hire and transport links.
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