Backdoor surfForecast / HAW – Oahu / USA

information circle12 Day Weather and Surf, issued 1 pm Sunday 04 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 Sunday (Jan 04) at 8PM. The primary swell is predicted to be 1.6m and 11s period. The wind is predicted to be offshore as the swell arrives.

The most powerful waves expected at Backdoor in the next 12 days are 2.5m 16s and forecast to arrive on Sunday (Jan 11) at 2PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 4.0m 9s period and expected on Monday (Jan 05) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 8PM (Sun 4th Jan)5ft (1.6m) 11s
Best Surf 2AM (Sun 11th Jan)5.5ft (1.7m) 12s
Most Powerful 2PM (Sun 11th Jan)8ft (2.5m) 16s

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

Updates in  hr  min  s Forecast update imminent

Short Range Forecast Heavy rain (total 38mm), heaviest during Mon night. Warm (max 24°C on Tue afternoon, min 21°C on Mon afternoon). Winds increasing (light winds from the ESE on Sun afternoon, strong winds from the E by Mon night).

Days 3-6 Weather Summary Moderate rain (total 14mm), heaviest on Wed afternoon. Warm (max 25°C on Thu morning, min 23°C on Wed afternoon). Wind will be generally light.

Sun
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Saturday
10
PMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAM
Rating
(10 max)
3
3
0
0
0
0
0
1
3
2
2
2
2
2
2
0
1
2
2
4
4
Swell
Height Map
Wave Height (m) & direction (?)
1.5
NNE
1.7
NNE
2.1
NE
0.3
SW
0.3
NW
0.3
NW
0.6
NW
0.8
NW
0.9
NW
1
NW
1
NW
1.1
NW
0.7
NW
0.7
NW
0.9
NW
0.7
NNW
0.6
NNW
1.1
NW
1.6
NW
1.7
NW
2
NNW
Period(s) (?)111110131413191715151413131212111114131216
Wave
Graph
(?)Metric surfscale
Energy kJ (?)540672809273127236418390418363386175152232113794928218191993
Wind
(km/h)
5
ESE
15
ESE
45
ESE
45
ESE
45
E
35
ESE
35
ESE
25
ESE
20
ESE
20
ESE
20
ESE
5
SSW
5
SW
5
SSW
5
SSW
5
WSW
5
SSW
5
NNW
10
NNE
10
ENE
10
SSW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
cross-
off
offcross-
off
cross-
off
cross-
off
offcross-
off
cross-
off
offcross-
off
offcross-
off
glassglassglasscross-
on
glassoncross-
on
cross-
off
cross-
off
High Tide
/ height (m)
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
6:05AM
0.58
5:54AM
0.52
12:19AM
0.53
Low Tide
/ height (m)
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
1:59PM
0.22
2:34PM
0.19
Sun
04
Monday
05
Tuesday
06
Wednesday
07
Thursday
08
Friday
09
Saturday
10
Sunrise--7:11--7:11--7:11--7:11--7:11--7:11--7:11
Sunset6:01--6:02--6:04--6:04--6:05--6:06--6:06--
thunderstorm
light rain
light rain
light rain
heavy rain
mod rain
rain showers
thunderstorm
light rain
mod rain
rain showers
clear
rain showers
clear
clear
rain showers
rain showers
clear
rain showers
clear
part cloud
Rain (mm)
352311613472-1--13-1--
Temp. °C232223232223242323232325252425252424242324
Feels °C (?)242318171618212022242327282828282727262526
  • Map Icons:
  • Break
  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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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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