Surf Forecasts:
ADs/Doubles surf forecast from 19 Aug 2026:
- Best quality surf: Thursday 20 Aug, 11AM (local time) - 2ft (0.6m), 18s period, SSW swell with cross-offshore winds.
- Most powerful swell: Monday 24 Aug, 11AM (local time) - 11ft (3.5m), 8s period, E swell with 1,529 kJ wave energy.
- Next surfable swell (1★+): Thursday 20 Aug, 11AM (local time) - 2ft (0.6m), 18s 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 11AM. The primary swell is predicted to be 0.6m and 18s period with a secondary swell of 0.8m and 8s. Another secondary swell of 0.8m and 6s is also forecast. 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 3.5m 8s and forecast to arrive on Monday (Aug 24) 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 16s period and expected on Friday (Aug 21) at 2AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | 11AM (Thu 20th Aug) | 2ft (0.6m) 18s |
| Best Surf | 11AM (Thu 20th Aug) | 2ft (0.6m) 18s |
| Most Powerful | 11AM (Mon 24th Aug) | 11ft (3.5m) 8s |
Table - best surf conditions forecast for ADs/Doubles over the next 16 days.
The Lowdown
Alright, let’s get real about ADs/Doubles. The next couple of weeks are a rough stretch.
The first week, from Wednesday, August 19th through the weekend, is basically a write-off. The wind is all wrong – strong cross-shore – and the swell is short-period slop. The combined energy is just moderate, but the wind chops it all up. Not worth wetting a wetsuit.
We get a little tease on Thursday morning, August 27th, with some longer period south swell, but the wind is still cranking cross-shore, so it’s just lumpy and unrideable.
The one true highlight, and the only serious window, is Tuesday, September 1st. We’ve got a major swell from the east pushing 10 feet, with a period of 13 seconds – that’s real groundswell energy. The combined energy reading is a massive 3039 – that is strong juice. The catch is the wind is still cross-shore at 30+ km/h, so it’ll be bumpy on top. At that size, it’s strictly for experts only. Crowds are likely, because everyone with the skills will be out.
After that pulse, the swell backs off, but the wind stays relentless, so the rest of the forecast looks like blown-out junk. For most surfers, I wouldn’t bother planning around this. The whole run is so cross-shore and choppy that it’s really only interesting for the kite boarders. But, you never know – forecasts can change.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 24°C on Wed morning). Wind will be generally light. | Days 4-6 Weather SummaryHeavy rain (total 30mm), heaviest during Mon night. Warm (max 26°C on Sat morning, min 24°C on Mon afternoon). Winds decreasing (near gales from the NE on Sun night, moderate winds from the ENE by Mon night). | ||||||||||||||||||||
Wednesday 19 | Thursday 20 | Friday 21 | Saturday 22 | Sunday 23 | Monday 24 | Tuesday 25 | |||||||||||||||
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) | E 8 | ENE 8 | E 8 | SSW 18 | SSW 17 | NE 7 | NE 7 | NE 7 | SSW 16 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | E 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||||
 kJ | 109 | 176 | 122 | 207 | 202 | 82 | 79 | 106 | 322 | 123 | 273 | 301 | 383 | 483 | 953 | 1529 | 980 | 736 | 485 | 341 | 300 |
Wind (km/h) | |||||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross | cross | cross | cross-off | cross-off | cross | cross-on | cross | cross-on | cross | cross | cross | cross | cross | cross | cross-on | cross-on | cross-on | cross-on | cross | cross |
High Tide | 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 | 1:56PM0.66m | 1:55AM0.30m | ||||||||
Low Tide | 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 | 6:56AM0.04m | 9:09PM0.10m | |||||||||
 | |  |  | |  | | | | | | | | |  |  |  | | | | | |
 | 6:09 | — | — | 6:09 | — | — | 6:09 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — | 6:11 | — | — |
 | — | 6:57 | — | — | 6:57 | — | — | 6:55 | — | — | 6:54 | — | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — |
mm | — | — | — | — | — | — | — | — | — | — | — | — | — | — | 1 | 1 | 6 | 22 | 7 | 4 | 1 |
Temp °C | 25 | 25 | 25 | 25 | 26 | 26 | 26 | 27 | 27 | 26 | 26 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 | 26 | 26 |
Feels °C | 25 | 25 | 24 | 26 | 28 | 29 | 29 | 28 | 28 | 24 | 24 | 23 | 22 | 22 | 21 | 21 | 22 | 22 | 25 | 27 | 26 |
Swell 1 Height (m) Direction Period (s) | E 8 | S 12 | E 8 | E 8 | ENE 7 | NE 7 | NE 7 | NE 7 | SSW 16 | SW 16 | SW 16 | SSW 16 | SSW 15 | ESE 12 | ESE 12 | SSW 14 | SSW 13 | SSE 8 | ENE 8 | E 8 | SSW 15 |
| kJ | 109 | 71 | 122 | 72 | 108 | 82 | 79 | 106 | 322 | 261 | 255 | 215 | 144 | 137 | 109 | 168 | 156 | 58 | 485 | 341 | 121 |
Swell 2 Height (m) Direction Period (s) | NE 7 | SSW 16 | SW 16 | NNE 6 | SSW 17 | SW 16 | SW 17 | SW 16 | W 10 | E 8 | SSE 12 | S 14 | ESE 11 | SSW 15 | SW 14 | SSE 13 | SSE 12 | SSW 13 | S 7 | SSW 16 | SSW 12 |
| kJ | 44 | 100 | 129 | 51 | 202 | 278 | 295 | 264 | 49 | 43 | 50 | 104 | 74 | 144 | 100 | 54 | 47 | 93 | 33 | 142 | 81 |
Swell 3 Height (m) Direction Period (s) | S 12 | SW 19 | S 12 | SSW 18 | SSE 12 | E 8 | W 10 | W 11 | S 13 | SSE 12 | WNW 11 | WNW 10 | S 13 | ESE 13 | SSE 13 | SSW 18 | SSW 18 | SSW 17 | SSW 12 | S 6 | S 18 |
| kJ | 69 | 92 | 45 | 207 | 28 | 29 | 34 | 57 | 54 | 50 | 38 | 19 | 90 | 70 | 57 | 62 | 62 | 95 | 85 | 20 | 165 |
Wind waves Height (m) Direction Period (s) | — | ENE 8 | NNE 6 | — | — | — | — | — | ENE 7 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | E 8 | E 8 | E 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | — | 176 | 47 | — | — | — | — | — | 144 | 123 | 273 | 301 | 383 | 483 | 953 | 1529 | 980 | 736 | 245 | 186 | 300 |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 18 | 18 | 18 | 0 | 7 | 7 | 7 | 16 | 18 | 50 | 58 | 56 | 218 | 218 | 140 | 131 | 109 | 109 | 49 | 16 | 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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