Surf Forecasts:
ADs/Doubles surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 11PM (local time) - 2ft (0.6m), 16s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 11PM (local time) - 8ft (2.5m), 8s period, E swell with 794 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 11PM (local time) - 2ft (0.6m), 16s period with SSW swell.
Best Forecast Surf Conditions for ADs/Doubles this week:
The surf forecast for ADs/Doubles over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Thursday (Aug 20) at 11PM. The primary swell is predicted to be 0.6m and 16s period with a secondary swell of 1.0m and 7s. The wind is predicted to be cross-offshore as the swell arrives.
The most powerful waves expected at ADs/Doubles in the next 16 days are 2.5m 8s and forecast to arrive on Monday (Aug 24) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.7m 16s period and expected on Friday (Aug 21) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11PM (Thu 20th Aug) | 2ft (0.6m) 16s |
| Best Surf | 11PM (Thu 20th Aug) | 2ft (0.6m) 16s |
| Most Powerful | 11PM (Mon 24th Aug) | 8ft (2.5m) 8s |
Table - best surf conditions forecast for ADs/Doubles over the next 16 days.
The Lowdown
Alright, Rusty here. Let's be real, it's a tough stretch ahead at A-Ds-Doubles. For the next couple of weeks, the wind has a nasty habit of coming in from the ENE or NE at moderate to strong speeds, keeping the surface lumpy and messy. The good news is, we've got a long fetching stretch of ENE swell that builds up nicely over time, but the wind just kills it for paddle surfing. The water is about 80°F, which is bang on average for this time of year, so no surprises there.
The first real chance of anything half-decent doesn't show up until the very end of the run. We're looking at a long, quiet spell with poor conditions through most of August and into September. The only glimmer on the horizon is the morning of Wednesday, 2nd September. We get a long-period groundswell from the south, coming in at 4ft with a period of 19 seconds. That's a super long period, which means thick, powerful lines. The combined swell energy is a massive 1699, so there's plenty of grunt behind it. Wind is a gentle NE cross-shore at 9 mph, so it should clean up nicely. That's the standout for the whole forecast – a quality, long-period south swell with light wind. Just keep in mind, with a period that long (over 15 seconds), the sets will be very defined and the gaps long. It might break a bit straight, but for a spot like this with an open exposure, it should have some shape. The afternoon of the 2nd also looks okay with a 4ft south swell, but the period ticks down to 18 seconds and the wind picks up a touch.
Before that? August 27th Thursday morning sees the swell peak at 10ft from the E with 8-second period, but with a fresh ENE cross-shore, it’s going to be a wind-blown, lumpy mess. That size with that wind is more of a kite-surfing show than a paddle session. Honestly, for a good 10 days leading into that, conditions are rated as poor.
So, to sum it up: The 16-day window is dominated by a persistent cross-shore wind pattern that keeps A-Ds-Doubles in rough shape. There is no surf worth chasing until the 2nd September. That south groundswell is the real deal, but it's a long way out, so keep an eye on it.
Rusty.
Short Range ForecastMostly dry. Warm (max 26°C on Thu afternoon, min 24°C on Tue night). Winds decreasing (fresh winds from the ENE on Tue afternoon, light winds from the E by Fri morning). | Days 5-7 Weather SummaryMostly dry. Warm (max 26°C on Fri afternoon, min 25°C on Sat night). Winds increasing (light winds from the E on Fri afternoon, strong winds from the ENE by Sun morning). | |||||||||||||||||||
Tue 18 | Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | ||||||||||||||
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 | E 8 | E 8 | E 8 | SSW 18 | SSW 17 | NE 7 | NE 7 | NE 7 | SSW 16 | NE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | E 7 | ENE 7 | ENE 8 |
Wave Graph  | ||||||||||||||||||||
 kJ | 172 | 181 | 109 | 107 | 102 | 207 | 202 | 109 | 93 | 106 | 322 | 84 | 268 | 302 | 414 | 360 | 374 | 569 | 532 | 711 |
Wind (km/h) | ||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross | cross | cross | cross | cross | cross | cross | cross | cross-on |
High Tide | 6:10PM0.31m | 9:08AM0.53m | 10:20AM0.55m | 8:45PM0.20m | 11:21AM0.57m | 10:59PM0.20m | 12:10PM0.60m | 00:02AM0.21m | 12:51PM0.62m | 00:45AM0.24m | 1:26PM0.65m | 1:20AM0.27m | ||||||||
Low Tide | 2:59PM0.27m | 1:14AM0.09m | 2:00AM0.10m | 7:38PM0.20m | 3:06AM0.11m | 7:49PM0.17m | 4:20AM0.10m | 8:09PM0.14m | 5:23AM0.08m | 8:29PM0.12m | 6:13AM0.06m | 8:49PM0.11m | ||||||||
 |  |  | | | | |  | | | | | | | | | | | | | |
 | — | — | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | 6:58 | — | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — | — |
Temp °C | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 26 | 26 | 26 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 23 | 25 | 25 | 25 | 26 | 27 | 28 | 29 | 29 | 28 | 26 | 24 | 23 | 23 | 22 | 23 | 23 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | S 13 | E 8 | E 8 | E 8 | E 8 | E 8 | NE 7 | NE 7 | NE 7 | SSW 16 | E 6 | SW 16 | SSW 16 | SSW 15 | SSW 15 | SW 14 | SSW 14 | SSW 13 | SSW 13 |
| kJ | 119 | 117 | 109 | 107 | 102 | 72 | 54 | 109 | 93 | 106 | 322 | 81 | 255 | 215 | 146 | 144 | 100 | 104 | 156 | 93 |
Swell 2 Height (m) Direction Period (s) | SSW 18 | SW 18 | NE 6 | S 12 | SW 16 | SSW 18 | NE 6 | SW 16 | SW 17 | SW 16 | W 10 | SW 16 | SSE 12 | S 14 | S 13 | SSE 13 | SSE 13 | SSE 13 | SSE 12 | SSW 17 |
| kJ | 121 | 79 | 42 | 71 | 129 | 207 | 43 | 278 | 295 | 264 | 31 | 261 | 50 | 104 | 90 | 59 | 57 | 54 | 29 | 56 |
Swell 3 Height (m) Direction Period (s) | WSW 6 | W 12 | S 12 | SSW 16 | S 12 | S 11 | SSW 17 | E 8 | W 11 | W 10 | S 13 | SSE 12 | WNW 11 | WNW 12 | WNW 11 | NW 11 | SSW 15 | NW 12 | NW 12 | SSE 12 |
| kJ | 4 | 11 | 69 | 100 | 45 | 39 | 202 | 28 | 35 | 33 | 54 | 50 | 39 | 47 | 25 | 30 | 71 | 35 | 21 | 27 |
Wind waves Height (m) Direction Period (s) | ENE 7 | ENE 8 | — | NE 6 | NE 6 | NE 6 | — | — | — | — | ENE 7 | NE 7 | ENE 7 | E 7 | E 7 | E 7 | ENE 7 | E 7 | ENE 7 | ENE 8 |
| kJ | 172 | 181 | — | 39 | 39 | 40 | — | — | — | — | 149 | 84 | 268 | 302 | 414 | 360 | 374 | 569 | 532 | 711 |
Nearest Offshore or Glassy | ||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 18 | 18 | 18 | 7 | 7 | 7 | 16 | 7 | 49 | 56 | 56 | 61 | 61 | 49 | 58 | 56 | 50 |
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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