Surf Forecasts:
Banzai Pipeline and Backdoor surf forecast from 26 Aug 2026:
- Most powerful swell: Saturday 29 Aug, 11PM (local time) - 1ft (0.3m), 16s period, SW swell with 43 kJ wave energy.
Best Forecast Surf Conditions for Banzai Pipeline and Backdoor this week:
The most powerful waves expected at Banzai Pipeline and Backdoor in the next 16 days are 0.3m 16s and forecast to arrive on Saturday (Aug 29) at 11PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.1m 8s period and expected on Monday (Aug 31) at 11PM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 11PM (Sat 29th Aug) | 1ft (0.3m) 16s |
Table - best surf conditions forecast for Banzai Pipeline and Backdoor over the next 16 days.
The Lowdown
Alright folks, Rusty here. Gotta be straight with you—this 16-day window is a tough one for the North Shore. We’re looking at a long, dry spell before anything even gets a pulse.
The first solid sign of life doesn’t show up for nearly two weeks. From now through the first week of September, it’s basically flat at Banzai Pipeline and Backdoor. There’s a dribble of 1ft NW windswell on the 26th and 27th, but it’s gutless with energy readings barely hitting 33 (weak) and a cross-offshore breeze that’s just stirring the surface. Not worth paddling out. From the 29th of August through the 3rd of September, we’ve got several days of flat calm—zero combined energy, zero swell. A total blank run.
Finally, on the 9th of September (Wednesday), a pulse shows up. Thursday the 10th of September is the only thing that even counts as a looker. We’ve got a 3ft NW groundswell with a period of 12 seconds, pushing the combined energy to 244 (moderate). That’s the standout in an otherwise bleak outlook. The wind is a clean cross-offshore from the south at 12 mph, which will keep the surface glassy for the more exposed take-off zones. But with northwest swell at Pipeline, that’s the wrong arrow in the quiver—the optimum direction for that reef is NW, so it’s dead on, and the long period (12 seconds) will bring some proper shape to the drop. However, this is an advanced wave on a good day, and the crowd factor here is often high, so you’ll be competing for scraps.
Because this spot is a reef setup and we’re looking at a long-period groundswell, it won’t be closing out like a beachie; the lines should hold up for those deep barrels. But let’s be real—3ft isn’t going to fire Pipeline. It’s a start. After a long dry stretch, it’s something. But don’t expect a classic session.
Stay patient, and keep your eye on the forecasts. They can change.
- Rusty
Short Range ForecastMostly dry. Warm (max 27°C on Fri afternoon, min 25°C on Tue night). Wind will be generally light. | Days 5-7 Weather SummaryLight rain (total 3mm), mostly falling on Sat morning. Warm (max 27°C on Sun afternoon, min 25°C on Fri night). Wind will be generally light. | ||||||||||||||||||
Wednesday 26 | Thursday 27 | Friday 28 | Saturday 29 | Sunday 30 | Monday 31 | ||||||||||||||
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) | NW 9 | NW 10 | NW 9 | NW 10 | NW 9 | NW 9 | NNE 7 | NNE 6 | NNE 7 | WNW 8 | ENE 7 | ENE 7 | ENE 7 | W 10 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | W 12 |
Wave Graph  | |||||||||||||||||||
 kJ | 21 | 23 | 22 | 34 | 22 | 21 | 16 | 11 | 9 | 6 | 0 | 0 | 0 | 8 | 0 | 0 | 0 | 0 | 11 |
Wind (km/h) | |||||||||||||||||||
Wind State on-shore cross-onshore cross-shore cross-offshore off-shore glassy | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off | cross-off |
High Tide | 1:07AM0.39m | 2:24PM0.74m | 1:46AM0.43m | 2:44PM0.72m | 2:26AM0.48m | 3:02PM0.70m | 3:07AM0.51m | 3:19PM0.65m | 3:51AM0.55m | 3:33PM0.60m | 4:40AM0.57m | 3:43PM0.55m | |||||||
Low Tide | 8:55PM0.28m | 7:06AM0.09m | 9:04PM0.26m | 7:41AM0.10m | 9:16PM0.24m | 8:16AM0.14m | 9:30PM0.21m | 8:53AM0.19m | 9:47PM0.18m | 9:32AM0.26m | 10:07PM0.15m | 10:15AM0.33m | 10:30PM0.13m | ||||||
 |  | | | | | |  | |  |  | | | | |  | | | | |
 | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:13 | — | — | 6:15 | — | — |
 | 6:54 | — | 6:53 | — | — | 6:52 | — | — | 6:52 | — | — | 6:51 | — | — | 6:50 | — | — | 6:49 | — |
mm | — | — | — | — | — | — | — | — | — | — | 1 | — | — | — | — | 2 | — | — | — |
Temp °C | 26 | 26 | 26 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 26 | 25 | 26 | 27 | 25 | 26 | 27 | 26 |
Feels °C | 26 | 24 | 24 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 24 | 24 | 24 | 25 | 26 | 25 | 25 | 26 | 25 |
Swell 1 Height (m) Direction Period (s) | NW 9 | NW 10 | NW 9 | NW 10 | NW 9 | NW 9 | NNE 7 | NNE 6 | E 15 | E 14 | E 13 | E 12 | E 12 | E 11 | ENE 11 | ENE 10 | ENE 10 | SW 14 | SW 14 |
| kJ | 21 | 23 | 22 | 34 | 22 | 21 | 16 | 11 | 104 | 146 | 126 | 112 | 73 | 63 | 40 | 35 | 33 | 51 | 52 |
Swell 2 Height (m) Direction Period (s) | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | NNE 8 | NW 9 | E 16 | NNE 7 | SSW 13 | SSW 18 | SSW 17 | SW 17 | SW 16 | SW 15 | SW 15 | SW 15 | SSW 18 | S 19 |
| kJ | 21 | 41 | 39 | 17 | 16 | 12 | 12 | 78 | 9 | 35 | 31 | 29 | 70 | 64 | 60 | 57 | 54 | 31 | 30 |
Swell 3 Height (m) Direction Period (s) | SSW 12 | W 11 | S 18 | SSW 16 | N 6 | SSW 16 | SSW 14 | S 14 | SSW 13 | WNW 8 | SSW 13 | SSW 12 | S 12 | W 10 | S 12 | S 11 | S 11 | S 11 | W 12 |
| kJ | 13 | 9 | 25 | 26 | 3 | 24 | 21 | 37 | 18 | 6 | 17 | 15 | 11 | 8 | 11 | 10 | 9 | 9 | 11 |
Wind waves Height (m) Direction Period (s) | E 7 | E 7 | ENE 7 | E 6 | ENE 6 | E 6 | E 6 | E 6 | ENE 6 | ENE 6 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 8 |
| kJ | 236 | 208 | 161 | 171 | 160 | 188 | 156 | 143 | 170 | 200 | 220 | 277 | 273 | 285 | 285 | 320 | 286 | 362 | 500 |
Nearest Offshore or Glassy | |||||||||||||||||||
Distance (km) | 22 | 22 | 26 | 22 | 26 | 26 | 32 | 24 | 26 | 22 | 22 | 22 | 22 | 22 | 24 | 22 | 22 | 27 | 24 |
Best forecast wave conditions in Oahu | |||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||
Header Global | |||||||||||||||||||
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Information about the Banzai Pipeline and Backdoor Surf forecast
The above surf forecast table for Banzai Pipeline and Backdoor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Banzai Pipeline and Backdoor can be found by selecting the local surf guide option on the grey menu. Our Banzai Pipeline and Backdoor 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 (Banzai Pipeline and Backdoor) 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 Banzai Pipeline and Backdoor 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.
Banzai Pipeline and Backdoor is 17 km (11 miles) from Wahiawa. If you plan a vacation in Oahu, look for hotels and other accommodation in Wahiawa. Wahiawa has rooms for a wide range of budgets as well as car hire and transport links.
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