Backdoor surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 7 am Friday 02 Jan 2026 HST
Forecast update in hr  min  s Forecast update imminent
Backdoor surf forecast is for near shore open water. Breaking waves will often be smaller at less exposed spots.
Today's Backdoor sea temperature is
25.4° C
(Which is slightly warmer than usual)
Nearby Cam: 2km away, Pipeline Cam powered by EXPLORE.org


Best Forecast Surf Conditions for Backdoor this week:

The surf forecast for Backdoor over the next 12 days: The first swell (rated 1 star or higher) is forecast to arrive on Saturday (Jan 03) at 11AM. The primary swell is predicted to be 1.7m and 12s period with a secondary swell of 0.8m and 13s. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Backdoor in the next 12 days are 1.3m 17s and forecast to arrive on Wednesday (Jan 07) at 2AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 3.5m 9s period and expected on Monday (Jan 05) at 11PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)11AM (Sat 3rd Jan)5.5ft (1.7m) 12s
Best Surf11AM (Sat 3rd Jan)5.5ft (1.7m) 12s
Most Powerful 2AM (Wed 7th Jan)4.5ft (1.3m) 17s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Moderate rain (total 19mm), heaviest on Sat night. Warm (max 24°C on Sat afternoon, min 22°C on Fri night). Winds decreasing (fresh winds from the E on Fri morning, calm by Sat afternoon).

Days 3-6 Weather Summary Heavy rain (total 44mm), heaviest during Tue morning. Warm (max 24°C on Wed morning, min 22°C on Mon morning). Winds decreasing (strong winds from the ESE on Mon night, light winds from the ESE by Wed night).

Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
AMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNight
Rating
(10 max)
1
1
3
4
3
3
3
3
1
1
0
0
3
2
2
2
2
3
2
3
1
Swell
Height Map
Wave Height (m) & direction (?)
1.3
N
1.4
N
1.7
N
1.7
N
1.6
N
1.4
NNE
1.4
NNE
1.3
NNE
1.2
NNE
1.3
NNE
1.1
NNE
0.6
NE
0.6
NW
1.1
NW
1.3
NW
1.3
NW
1.1
NW
1.2
NW
1.2
NW
1.1
NW
1.1
NW
Period(s) (?)111312121211121211101113221917161514131312
Wave
Graph
(?)Metric surfscale
Energy kJ (?)416613841814711495514422319327291142290834951793543581503437374
Wind
(km/h)
30
E
25
E
25
E
15
ESE
5
WSW
10
SSW
15
SSE
10
SSE
25
ESE
35
ESE
40
ESE
35
E
20
SE
30
ESE
30
ESE
25
ESE
25
E
15
ESE
20
E
20
ESE
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
cross-
off
cross-
off
offglasscross-
off
cross-
off
offcross-
off
offcross-
off
cross-
off
offcross-
off
cross-
off
cross-
off
cross-
off
cross-
off
cross-
off
offcross-
off
High Tide
/ height (m)
12:27PM
0.34
3:26AM
0.89
1:26PM
0.34
4:04AM
0.87
2:21PM
0.34
4:39AM
0.83
3:18PM
0.35
5:10AM
0.78
4:21PM
0.35
5:36AM
0.71
5:37PM
0.36
5:55AM
0.64
7:24PM
0.38
Low Tide
/ height (m)
10:32AM
0.32
7:22PM
-0.06
10:58AM
0.31
8:06PM
-0.04
11:28AM
0.31
8:47PM
-0.00
11:58AM
0.29
9:25PM
0.06
12:28PM
0.28
10:00PM
0.15
12:57PM
0.26
10:32PM
0.25
1:27PM
0.24
11:00PM
0.35
Friday
02
Saturday
03
Sunday
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Sunrise7:09--7:11--7:11--7:11--7:11--7:11--7:11--
Sunset-6:00--6:01--6:01--6:02--6:04--6:04--6:05-
cloud
part cloud
part cloud
part cloud
cloud
mod rain
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
light rain
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
thunderstorm
rain showers
thunderstorm
thunderstorm
Rain (mm)
-----103333251257433328
Temp. °C232322232423232323232223222323242423242424
Feels °C (?)202020232525232222201819202321232322242425
  • 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

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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 12 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.

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