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Surf Forecasts:

Backdoor surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 1 am Saturday 17 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
25.0° C
 (Which is slightly warmer than usual)

How big are the waves at Backdoor today?

The current surf forecast for Backdoor at 3AM is: 2.5m 13s primary swell from a North direction and 1.6m 12s secondary swell from a Northwest direction (forecast issued at 01:00am January 17). An open ocean swell of 0.4m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (17 Jan)7.5ft (2.3m)12s
Afternoon (17 Jan)6ft (1.9m)12s
Evening (17 Jan)5ft (1.6m)12s

Table - waves today at Backdoor. (Swell directed towards the surf break)

Updates in  hr  min  s Forecast update imminent 
12 DaysHourly
Print Table
Saturday
17
Sunday
18
Monday
19
11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM11 PM2 AM5 AM8 AM11 AM2 PM5 PM8 PM
Rating
(10 max)
2
2
2
2
2
2
2
2
1
1
2
2
3
3
4
4
3
2
3
3
2
3
2
2
Swell
Height Map
See all maps
Wave Height (m) & direction (?)
2.5
N
2.5
N
2.4
N
2.4
N
2.4
NNE
1.9
N
1.8
N
1.6
N
1.5
N
1.5
N
0.8
NW
1.9
NW
2.5
NW
2.5
NW
2.5
NW
2.5
NW
2.3
NW
2.2
NW
2
NW
1.8
NW
1.6
NW
1.5
NW
1.3
NW
1.2
NW
Period(s) (?)131312121212121212112018171616161514141413131313
Wave
Graph
(?)Metric surfscale
Energy kJ (?)227020431721163815381002902690596576502234536633634354432882278198315801220933755609473
Wind
(km/h)
25
NE
30
NE
30
ENE
30
ENE
30
ENE
30
E
25
ENE
30
E
30
E
25
E
30
E
30
E
30
ESE
25
ESE
20
ESE
20
E
25
ESE
25
ESE
20
ESE
20
ESE
15
ESE
0
ESE
10
W
5
SW
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscross-
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		glasscross-
on		cross
High Tide
/ height (m)
2:55AM
0.79
12:53PM
0.35
3:23AM
0.80
1:36PM
0.36
3:48AM
0.80
2:19PM
0.37
Low Tide
/ height (m)
10:19AM
0.32
7:30PM
0.01
10:33AM
0.32
8:03PM
0.01
10:49AM
0.31
Saturday
17
Sunday
18
Monday
19
Sunrise---7:11-------7:11-------7:11----
Sunset------6:10-------6:12-------6:13-
clear
clear
cloud
clear
clear
clear
clear
clear
part cloud
part cloud
clear
part cloud
part cloud
part cloud
part cloud
cloud
clear
cloud
clear
clear
part cloud
part cloud
cloud
part cloud
Rain (mm)
------------------------
Temp. °C222121212223222222222222232323232222222223232422
Feels °C (?)181616161718171717171717181920211919192021242422
  • 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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FREE! Surf-Forecast.com widget for your website

The surf report / weather widget below is available to embed on third party websites free of charge and provides a summary of our 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.

View detailed surf forecast for Backdoor at:
surf-forecast.com

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