Surf Forecasts:
ADs/Doubles surf forecast from 29 Aug 2026:
- Most powerful swell: Friday 4 Sep, 11AM (local time) - 5ft (1.5m), 13s period, E swell with 752 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 1.5m 13s and forecast to arrive on Friday (Sep 04) at 11AM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.5m 17s period and expected on Saturday (Aug 29) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11AM (Fri 4th Sep) | 5ft (1.5m) 13s |
Table - best surf conditions forecast for ADs/Doubles over the next 16 days.
The Lowdown
Hey, Rusty here. Let’s get into it for A-Ds-Doubles.
Honestly, the first week is a grind. From Saturday, August 29th through Friday, September 4th, the wind is hammering away cross-shore at 20 to 25 mph, and it’s keeping the ocean all chopped up. The swell sits around 5 to 8 ft, coming from the ENE with a short, weak period. The combined energy is moderate, from the 490 to 960 range. Water temp is nothing special for this time of year. Not a lot of reason to get wet unless you’re really keen on a rough paddle.
There’s a hint of improvement on Saturday, September 5th. The swell is still about 5 ft from the ENE, but the period stretches to 12 seconds – that’s a longer period groundswell starting to push in. Wind drops to 15 mph cross-shore, but we’re still dealing with some cross-chop. The energy is strong at 879, but the surf is only marginal. Better, but still not clean.
Now, Monday, September 7th brings the power. Swell jumps to 10 ft from the ENE. That is a very strong event, with combined energy hitting 2066. Wind and tide are favorable, but this is a serious size. This is expert-only territory. Beginners, stay on the beach. The same big energy sticks around for Tuesday, September 8th, with 10 ft in the morning and 8 ft in the afternoon. It’s still cross-shore and lumpy.
The real standout comes on Wednesday, September 9th. The swell drops to a more manageable 7 ft from the ENE, and the wind turns light cross-offshore in the afternoon. The sea state cleans right up. That afternoon is your best window – clean conditions, moderate energy at 694. Not the biggest, but the best shape and quality of the whole stretch.
After that, from Thursday, September 10th to Sunday, September 13th, it drops back into poor or marginal surf with onshore or cross winds and smaller swell.
So, for my money, the call is Wednesday, September 9th afternoon. Clean, light winds, head-high to slightly overhead swell from the ENE. That’s the one to aim for. The big 10 ft days on the 7th and 8th? That’s just for the brave and the skilled. For everyone else, it’s a waiting game.
Rusty, out.
Short Range ForecastSome drizzle, heaviest during Sun night. Warm (max 26°C on Sat morning, min 25°C on Fri night). Mainly strong winds. | Days 5-7 Weather SummarySome drizzle, heaviest during Wed night. Warm (max 26°C on Wed morning, min 25°C on Mon night). Mainly fresh winds. | ||||||||||||||||||
Saturday 29 | Sunday 30 | Monday 31 | Tuesday 1 | Wednesday 2 | Thursday 3 | ||||||||||||||
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) | S 13 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | S 16 | S 16 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
Wave Graph  | |||||||||||||||||||
 kJ | 229 | 240 | 220 | 555 | 419 | 307 | 338 | 376 | 531 | 514 | 527 | 569 | 589 | 427 | 401 | 353 | 331 | 257 | 238 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-on | cross | cross | cross-on | cross | cross | cross-on | cross-on | cross | cross | cross | cross | cross-on | cross | cross | cross | cross | cross | cross |
High Tide | 3:47AM0.44m | 3:48PM0.58m | 4:31AM0.49m | 4:17PM0.51m | 5:19AM0.53m | 4:46PM0.43m | 6:14AM0.56m | 5:18PM0.36m | 7:19AM0.59m | 5:54PM0.28m | 8:36AM0.61m | 7:01PM0.22m | |||||||
Low Tide | 10:10PM0.06m | 9:43AM0.10m | 10:32PM0.05m | 10:34AM0.14m | 10:56PM0.04m | 11:35AM0.19m | 11:23PM0.04m | 12:53PM0.23m | 11:56PM0.04m | 2:47PM0.24m | 00:39AM0.05m | 5:18PM0.21m | 1:39AM0.06m | ||||||
 |  |  | | | |  | | |  | | | | | | | | | | |
 | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — |
 | 6:50 | — | 6:49 | — | — | 6:47 | — | — | 6:46 | — | — | 6:45 | — | — | 6:45 | — | — | 6:45 | — |
mm | — | — | — | — | — | — | 1 | — | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 25 | 26 | 25 | 25 | 25 | 26 | 25 | 25 | 25 | 25 | 25 | 25 | 25 | 26 | 26 | 25 | 25 | 25 | 25 |
Feels °C | 22 | 23 | 21 | 21 | 21 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 24 | 24 | 23 | 22 | 22 | 23 |
Swell 1 Height (m) Direction Period (s) | S 13 | E 13 | E 12 | SSW 17 | SSW 16 | S 12 | SSW 15 | SSW 15 | SSW 14 | S 19 | SSW 18 | S 18 | S 17 | S 16 | S 16 | S 15 | S 14 | S 14 | S 13 |
| kJ | 229 | 171 | 106 | 188 | 171 | 100 | 199 | 144 | 138 | 192 | 329 | 314 | 364 | 427 | 401 | 275 | 268 | 195 | 225 |
Swell 2 Height (m) Direction Period (s) | E 14 | S 13 | S 13 | S 12 | SSE 12 | SSW 16 | S 11 | S 11 | S 11 | S 10 | S 10 | S 12 | S 10 | SSE 10 | SSE 11 | E 13 | E 13 | E 12 | E 12 |
| kJ | 195 | 85 | 89 | 47 | 47 | 162 | 59 | 82 | 55 | 50 | 29 | 77 | 35 | 33 | 40 | 83 | 119 | 145 | 138 |
Swell 3 Height (m) Direction Period (s) | SW 19 | S 13 | S 12 | SSW 12 | SSW 12 | E 11 | ENE 10 | SSW 18 | SSW 19 | SSW 14 | SW 14 | SW 14 | SW 14 | SW 14 | E 12 | S 11 | SSE 10 | SSE 10 | SW 18 |
| kJ | 56 | 89 | 75 | 45 | 47 | 61 | 35 | 64 | 122 | 80 | 51 | 52 | 51 | 30 | 48 | 58 | 33 | 33 | 12 |
Wind waves Height (m) Direction Period (s) | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 |
| kJ | 226 | 240 | 220 | 555 | 419 | 307 | 338 | 376 | 531 | 514 | 527 | 569 | 589 | 423 | 392 | 353 | 331 | 257 | 238 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 49 | 56 | 58 | 64 | 56 | 56 | 49 | 50 | 58 | 49 | 49 | 109 | 49 | 49 | 62 | 49 | 49 | 49 | 18 |
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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