Backdoor surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 7 pm Saturday 28 Mar 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
24.3° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Backdoor this week:

The surf forecast for Backdoor over the next 16 days: The first swell (rated 1 star or higher) is forecast to arrive on Friday (Apr 03) at 5AM. The primary swell is predicted to be 1.3m and 8s period. The wind is predicted to be cross-offshore as the swell arrives.

The most powerful waves expected at Backdoor in the next 16 days are 3.0m 12s and forecast to arrive on Sunday (Mar 29) at 11PM. Winds are predicted to be cross-shore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 0.4m 8s period and expected on Monday (Mar 30) at 2AM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+) 5AM (Fri 3rd Apr)4.5ft (1.3m) 8s
Best Surf 5AM (Fri 3rd Apr)4.5ft (1.3m) 8s
Most Powerful11PM (Sun 29th Mar)10ft (3.0m) 12s

Table - best surf conditions forecast for Backdoor over the next 16 days.


Updates in  hr  min  s Forecast update imminent

Short Range Forecast Mostly dry. Warm (max 22°C on Mon afternoon, min 20°C on Sun night). Mainly fresh winds.

Days 3-6 Weather Summary Mostly dry. Warm (max 22°C on Wed morning, min 21°C on Tue night). Mainly fresh winds.

Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Sat
04
NightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPMNightAMPM
Rating
(10 max)
0
1
1
1
1
1
1
1
1
2
3
0
2
2
1
0
0
0
1
1
2
Swell
Height Map
Wave Height (m) & direction (?)
1.7
NNE
2.5
N
3
NNE
2.5
NNE
2.5
NNE
2.5
NNE
2.5
NNE
2.5
NNE
2.5
NNE
2.2
NNE
2.2
NE
2.1
NE
1.8
NE
1.8
NE
1.6
NE
1.3
NE
1.1
NE
1.1
NE
0.9
NE
0.8
NE
0.9
NE
Period(s) (?)911111212121211111110101099888888
Wave
Graph
(?)Metric surfscale
Energy kJ (?)4541432181520201913188118801655152111349938325735643792271801459988103
Wind
(km/h)
25
NE
25
NE
30
NE
25
NE
25
NE
35
NE
30
NE
30
NE
30
NE
20
NE
20
ENE
25
NE
25
NE
20
ENE
25
ENE
15
NE
15
ENE
15
ENE
10
ENE
15
ENE
15
ENE
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
crosscrosscrosscrosscrosscrosscrosscrosscrosscrosscross-
off
crosscross-
off
cross-
off
cross-
off
crosscross-
off
cross-
off
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
12:50AM
0.70
1:03PM
0.45
1:16AM
0.67
1:40PM
0.52
1:38AM
0.64
2:16PM
0.59
1:58AM
0.59
2:50PM
0.64
2:14AM
0.54
3:24PM
0.67
2:27AM
0.50
3:58PM
0.68
2:35AM
0.46
4:35PM
0.68
Low Tide
/ height (m)
7:40AM
0.22
6:35PM
0.19
7:50AM
0.19
7:23PM
0.21
8:03AM
0.16
8:07PM
0.24
8:17AM
0.13
8:49PM
0.27
8:32AM
0.11
9:31PM
0.31
8:48AM
0.10
10:15PM
0.34
9:06AM
0.09
Sunday
29
Monday
30
Tuesday
31
Wednesday
01
Thursday
02
Friday
03
Sat
04
Sunrise-6:28--6:26--6:26--6:24--6:24--6:22--6:22-
Sunset--6:45--6:45--6:45--6:46--6:46--6:46--6:47
part cloud
part cloud
part cloud
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
part cloud
clear
part cloud
part cloud
clear
clear
clear
clear
clear
Rain (mm)
---------------------
Temp. °C212121212122212221212222212222222222212222
Feels °C (?)161616161717161716161919182019202121202020
  • Map Icons:
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  • Live Wave Height (m)
  • Live Wind Speed (km/h)
  • Surf Rating (10 Max)
  • Ocean Swells (m)
  • Wind Speed (km/h)
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Quick surf report for Backdoor:

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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 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 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.

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