
Surf Forecasts:
Backdoor surf forecast from 6 Jul 2026:
- Most powerful swell: Saturday 11 Jul, 8PM (local time) - 1.5ft (0.5m), 18s period, SW swell with 150 kJ wave energy.
Best Forecast Surf Conditions for Backdoor this week:
The most powerful waves expected at Backdoor in the next 16 days are 0.5m 18s and forecast to arrive on Saturday (Jul 11) at 8PM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.3m 8s period and expected on Monday (Jul 06) at 11AM.
| Wave Type | Time (HST) & Date | Wave Height & Period |
|---|---|---|
| Next good surf (1 star+) | - | - |
| Best Surf | - | - |
| Most Powerful | 8PM (Sat 11th Jul) | 1.5ft (0.5m) 18s |
Table - best surf conditions forecast for Backdoor over the next 16 days.
Updates in hr min s Forecast update imminent
Alright, Rusty here again, and I’m not gonna sugarcoat it. The next 16 days at Backdoor are looking pretty grim for surf. You’re looking at a long, flat spell with nothing worth paddling out for for a good week and a half.
Starting Sunday the 5th through to the 11th, the swell is tiny. We’re talking waves around 0.3 ft to 1.0 ft, with weak combined energy sitting between 2 and 42 (very weak). The wind is a cross-off from the ENE, but it’s blowing a fresh breeze at 18-22 mph, so it’s not clean. It’s a total write-off.
Things perk up a bit around Sunday the 12th. The energy climbs into the moderate range, with a 2 ft to 2 ft swell from the SW and W. The combined energy hits 165 on the 12th and goes up to 340 by the 14th. The period stretches out to 15-16 seconds, which is a long-period groundswell. That’s good for a reef break like this one, but the wind is still a cross-off. While the breeze drops to a moderate 12-15 mph, it’s not offshore. The forecast calls it “poor” or “marginal” for surfing, scoring a 0 or 1 out of 10. The water temp is 79°, which is normal for the time of year.
From the 15th onward, the swell fades again. Wednesday the 15th has some 2 ft, 16-second swell, but by the 20th we’re back to 0.7 ft and weak energy. The wind stays cross-off or onshore, so the second week doesn’t look any better.
Honestly, the whole 16-day window has no real standout. The best of a bad lot might be Sunday the 12th through Tuesday the 14th, when the energy is highest, but you’d be fighting a cross-off breeze for some pretty average waves. If you’re a beginner, the swell is small enough, but it’s not clean. The wind and cross-off setup make this look more interesting for kite surfing than paddle surfing.
Hang tight, folks. Forecasts can change, but right now, it’s a flat spell.
- Rusty
Short Range ForecastLight rain (total 4mm), mostly falling on Mon morning. Warm (max 25°C on Sun morning, min 23°C on Mon night). Mainly fresh winds. | Days 4-6 Weather SummaryLight rain (total 2mm), mostly falling on Wed morning. Warm (max 26°C on Thu afternoon, min 24°C on Wed morning). Mainly fresh winds. | ||||||||||||||||||||
Sunday 5 | Monday 6 | Tuesday 7 | Wednesday 8 | Thursday 9 | Friday 10 | Saturday 11 | |||||||||||||||
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) | NW 11 | NW 11 | NW 10 | NNW 10 | NW 10 | NW 9 | NW 9 | N 9 | SW 14 | SW 13 | W 16 | W 15 | W 18 | W 14 | W 13 | W 15 | W 15 | SW 19 | W 14 | W 14 | SW 17 |
Wave Graph | |||||||||||||||||||||
42 | 41 | 16 | 10 | 4 | 3 | 3 | 2 | 7 | 7 | 7 | 4 | 6 | 15 | 14 | 17 | 17 | 59 | 36 | 33 | 148 | |
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 | cross-off | cross-off |
High Tide | 6:02PM0.63m | 7:53AM0.40m | 6:18PM0.58m | 10:08AM0.48m | 6:26PM0.53m | 11:28AM0.58m | 12:18PM0.67m | 1:02PM0.76m | 1:44PM0.82m | ||||||||||||
Low Tide | 10:39AM0.27m | 1:36AM0.23m | 11:26AM0.37m | 2:08AM0.18m | 1:15PM0.46m | 2:47AM0.14m | 3:33AM0.10m | 4:25AM0.05m | 5:19AM0.01m | ||||||||||||
5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:54 | — | — | 5:56 | — | — | 5:56 | — | — | |
— | 7:19 | — | — | 7:19 | — | — | 7:19 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | — | 7:17 | — | |
mm | — | — | — | 1 | — | 2 | 1 | — | — | 1 | — | — | — | — | — | — | — | 1 | — | — | — |
Temp °C | 25 | 25 | 24 | 24 | 25 | 24 | 24 | 25 | 24 | 25 | 25 | 24 | 25 | 26 | 24 | 25 | 26 | 24 | 25 | 25 | 24 |
Feels °C | 23 | 23 | 22 | 21 | 22 | 21 | 21 | 22 | 21 | 22 | 22 | 21 | 23 | 25 | 23 | 24 | 25 | 23 | 23 | 23 | 23 |
Swell 1 Height (m) Direction Period (s) | NW 11 | NW 11 | SSW 16 | SSW 16 | SSW 15 | SSW 15 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 14 | SSW 13 | SSW 13 | SSW 12 | W 13 | W 13 | W 13 | W 13 | W 14 | SW 18 | SW 17 |
42 | 41 | 102 | 50 | 89 | 44 | 41 | 40 | 37 | 38 | 18 | 17 | 16 | 15 | 14 | 13 | 13 | 31 | 36 | 79 | 148 | |
Swell 2 Height (m) Direction Period (s) | SW 14 | ESE 9 | NW 10 | SSW 13 | NW 10 | SSW 14 | NW 9 | S 10 | SW 14 | SW 13 | SW 13 | W 15 | W 14 | W 14 | SSW 12 | W 15 | W 15 | SW 19 | SW 18 | W 14 | W 13 |
54 | 17 | 16 | 17 | 4 | 20 | 3 | 2 | 7 | 7 | 7 | 4 | 4 | 15 | 15 | 17 | 17 | 59 | 84 | 33 | 55 | |
Swell 3 Height (m) Direction Period (s) | SSW 18 | SSW 18 | S 10 | NNW 10 | W 10 | NW 9 | S 10 | N 9 | S 11 | — | W 16 | — | W 18 | W 18 | W 16 | S 12 | SSW 21 | S 11 | S 12 | S 12 | S 10 |
62 | 60 | 2 | 10 | 2 | 3 | 2 | 2 | 2 | — | 5 | — | 6 | 6 | 5 | 11 | 43 | 2 | 3 | 3 | 2 | |
Wind waves Height (m) Direction Period (s) | ENE 8 | ENE 7 | ENE 7 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 8 | ENE 7 | ENE 8 | ENE 8 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 7 | ENE 8 | ENE 7 |
382 | 372 | 412 | 575 | 536 | 522 | 622 | 612 | 557 | 469 | 411 | 353 | 540 | 495 | 390 | 468 | 469 | 498 | 475 | 408 | 352 | |
Nearest Offshore or Glassy | |||||||||||||||||||||
Distance (km) | 24 | 165 | 24 | 166 | 166 | 24 | 165 | 165 | 24 | 26 | 26 | 26 | 26 | 26 | 26 | 24 | 24 | 24 | 26 | 165 | 2 |
Best forecast wave conditions in Oahu | |||||||||||||||||||||
Best forecast wave conditions in United States | |||||||||||||||||||||
Header Global | |||||||||||||||||||||
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Live Wave Height (m)
Live Wind Speed (km/h)
Surf Rating (10 Max)
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Information about the Backdoor Surf forecast
The above surf forecast table for Backdoor provides essential information for determining whether the surfing conditions will be good over the next 16 days. A general guide to surfing at Backdoor can be found by selecting the local surf guide option on the grey menu. Our 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 (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 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.
Backdoor is 19 km (12 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.










