Banzai Pipeline and Backdoor surf break

Banzai Pipeline and Backdoor surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 am Monday 18 Aug 2025 HST
Forecast update in hr  min  s Forecast update imminent
Banzai Pipeline and Backdoor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Banzai Pipeline and Backdoor sea temperature is
27.1° C
(Which is normal for this time of year)


Best Forecast Surf Conditions for Banzai Pipeline and Backdoor this week:

The surf forecast for Banzai Pipeline and Backdoor over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Monday (Aug 18) at 2PM. The primary swell is predicted to be 0.8m and 7s period with a secondary swell of 0.3m and 11s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Banzai Pipeline and Backdoor in the next 12 days are 0.8m 7s and forecast to arrive on Monday (Aug 18) at 2PM. Winds are predicted to be 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 Sunday (Aug 24) at 8AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 2PM (Mon 18th Aug)2.5ft (0.8m) 7s
Best Surf 2PM (Mon 18th Aug)2.5ft (0.8m) 7s
Most Powerful 2PM (Mon 18th Aug)2.5ft (0.8m) 7s

Table - best surf conditions forecast for Banzai Pipeline and Backdoor over the next 12 days.

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Some drizzle, heaviest during Mon morning. Warm (max 27°C on Mon morning, min 25°C on Mon morning). Wind will be generally light.

Days 3-6 Weather Summary Mostly dry. Warm (max 27°C on Thu afternoon, min 24°C on Thu night). Mainly fresh winds.

Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
NW
0.3
NW
0.3
NW
0.2
WNW
0.2
WNW
0.2
WNW
0.2
WNW
0.2
N
0.3
NNE
0.3
NNE
0.4
NNE
0.4
NNE
0.4
NNE
0.4
NNE
0.3
NNE
0.3
N
0.2
N
0.2
N
0.2
N
0.1
SW
0.2
N
Period(s) (?)11111110109910109998988887168
Wave
Graph
(?)Metric surfscale
Energy (?)431918109161511212027292039251116441413
Wind
(km/h)
20
E
20
ENE
25
E
20
E
25
ENE
20
E
20
ENE
25
ENE
25
E
20
E
25
ENE
20
E
25
E
25
E
25
E
25
E
30
E
30
E
30
E
30
E
25
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
offcross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
12:45PM
0.76
1:22PM
0.79
11:50PM
0.32
1:56PM
0.80
12:49AM
0.36
2:25PM
0.79
1:35AM
0.40
2:50PM
0.76
2:17AM
0.44
3:12PM
0.73
2:58AM
0.48
3:31PM
0.68
3:39AM
0.51
Low Tide
/ height (m)
5:06AM
0.08
9:06PM
0.29
6:04AM
0.06
9:06PM
0.28
6:51AM
0.06
9:17PM
0.27
7:33AM
0.07
9:30PM
0.25
8:11AM
0.10
9:45PM
0.23
8:47AM
0.15
10:00PM
0.21
Monday
18
Tuesday
19
Wednesday
20
Thursday
21
Friday
22
Saturday
23
Sunday
24
Sunrise6:11--6:11--6:11--6:11--6:11--6:11--6:13--
Sunset-7:00--6:59--6:59--6:58--6:57--6:55--6:54-
rain showersclearclearpart cloudclearclearclearpart cloudclearpart cloudclearclearpart cloudclearclearclearpart cloudclearpart cloudclearpart cloud
Rain (mm)
1--------------------
Temp. °C272726262725272725262725262725272725262725
Feels °C (?)272727252725262725252624252524252523242524
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
Map placeholder

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Oahu

  1. weather stationWind Update Continuing clean conditions at Banzai Pipeline and Backdoor (light winds from the WNW at Wheeler Air Force Base/oahu Airport 21 km from Banzai Pipeline and Backdoor). 0.5m 8s swell from the NE with a 0.2m 11s groundswell from the WNW. 2 swells combining to make bigger set waves.

    Banzai Pipeline and Backdoor
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21 km away, 2 h 26 min ago

7 km/h
WNW
0.0
27.1
Air / Water (°C)
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The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our Banzai Pipeline and Backdoor surf forecast. Simply grab the html code snippet that we provide and paste it into your own site. You can choose your preferred language and metric/imperial units for the surf forecast feed to suit users of your site. Click here to get the code.


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 12 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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