Backdoor surfForecast / HAW – Oahu / USA

information circle16 Day Weather and Surf, issued 1 am Sunday 24 May 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
25.2° C
(Which is normal for this time of year)

Best Forecast Surf Conditions for Backdoor this week:

The most powerful waves expected at Backdoor in the next 16 days are 1.2m 15s and forecast to arrive on Wednesday (May 27) at 5AM. Winds are predicted to be cross-offshore at the time the swell arrives. The largest open ocean swell (not directed at the beach) is 2.5m 8s period and expected on Sunday (May 24) at 5PM.

Wave TypeTime (HST) & Date Wave Height & Period
Next good surf (1 star+)--
Best Surf--
Most Powerful 5AM (Wed 27th May)4ft (1.2m) 15s

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


Updates in  hr  min  s Forecast update imminent

Short Range Forecast

Light rain (total 5mm), mostly falling on Sun afternoon. Warm (max 24°C on Mon morning, min 22°C on Sun night). Mainly fresh winds.

Days 4-6 Weather Summary

Mostly dry. Warm (max 25°C on Fri afternoon, min 23°C on Wed morning). Mainly fresh winds.

Sunday
24
Monday
25
Tuesday
26
Wednesday
27
Thursday
28
Friday
29
Saturday
30
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
AM
PM
Night
Rating
(10 max)
0
0
0
0
0
0
0
0
0
1
1
1
1
0
0
0
0
0
0
0
0
Swell
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Height Map
Wave
Height (m)
Direction
Period (s)
0.9
NW
12
0.8
NW
12
0.7
NW
11
0.6
NW
11
0.5
NW
11
0.4
NW
10
0.4
NW
20
0.7
NW
18
1
NW
16
1.1
NW
14
1.2
NW
14
1.1
NW
13
1
NW
12
0.9
NW
12
0.9
NW
12
0.8
NNW
12
0.7
NW
11
0.6
NNW
11
0.5
NNW
10
0.5
NNW
10
1
NE
7
Wave Graph
Metric surfscale
Energy kJ
216
169
128
96
56
37
134
311
480
507
526
380
281
244
199
174
123
78
57
56
105
Wind (km/h)
35
ENE
35
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
30
ENE
25
E
25
ENE
25
ENE
25
E
25
E
25
ENE
25
E
25
E
25
ENE
25
ENE
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
cross-off
cross-off
High Tide
11:49AM0.44m
9:52PM0.56m
12:30PM0.53m
10:24PM0.51m
1:03PM0.61m
10:53PM0.46m
1:34PM0.68m
11:21PM0.42m
2:03PM0.72m
11:47PM0.39m
2:34PM0.75m
00:13AM0.37m
3:06PM0.76m
00:36AM0.36m
Low Tide
3:49PM0.39m
5:16AM0.16m
5:40PM0.41m
5:34AM0.13m
7:04PM0.40m
5:53AM0.11m
8:11PM0.39m
6:15AM0.08m
9:06PM0.37m
6:39AM0.06m
9:54PM0.36m
7:06AM0.05m
10:41PM0.35m
clear
rain showers
clear
clear
clear
rain showers
rain showers
rain showers
clear
clear
clear
clear
part cloud
clear
clear
clear
clear
clear
clear
clear
clear
<span class="translation_missing" title="translation missing: en.weather_tables.sunrise">Sunrise</span>
5:50
5:50
5:50
5:48
5:48
5:48
5:48
<span class="translation_missing" title="translation missing: en.weather_tables.sunset">Sunset</span>
7:07
7:07
7:07
7:08
7:08
7:08
7:09
2
1
1
1
Temp °C
23
23
23
24
24
23
24
24
23
23
24
23
23
24
23
24
25
23
24
25
24
20
19
19
21
21
20
21
21
20
20
21
20
21
22
21
22
23
21
23
24
23
Swell 1
Height (m)
Direction
Period (s)
0.9
NW
12
0.8
NW
12
0.7
NW
11
0.6
NW
11
0.5
NW
11
0.4
NW
10
0.4
NW
20
0.7
NW
18
1
NW
16
1.1
NW
14
1.2
NW
14
1.1
NW
13
1
NW
12
0.9
NW
12
0.9
NW
12
0.8
NNW
12
0.7
NW
11
0.6
NNW
11
0.5
NNW
10
0.5
NNW
10
1
NE
7
Energy kJ
216
169
128
96
56
37
134
311
480
507
526
380
281
244
199
174
123
78
57
56
105
Swell 2
Height (m)
Direction
Period (s)
0.2
S
14
0.2
S
13
0.2
S
13
0.1
S
13
0.2
S
14
0.2
S
13
0.4
NW
10
0.4
NW
10
0.3
NW
9
0.2
NNW
9
0.2
N
12
0.4
NW
16
0.4
NNE
12
0.6
NNE
14
0.6
N
11
0.6
N
10
0.5
NNE
11
0.4
NNE
11
0.4
NNE
10
0.3
NNE
10
0.5
NNW
10
Energy kJ
15
14
14
3
14
13
24
24
13
8
12
66
46
143
83
77
64
46
38
19
54
Swell 3
Height (m)
Direction
Period (s)
0.2
S
16
0.1
S
16
0.1
S
15
0.1
S
19
0.2
S
13
0.2
S
15
0.2
S
14
0.2
S
14
0.2
NNW
9
0.3
N
12
0.3
NNE
14
0.1
SW
16
0.4
NNE
13
0.3
NNE
12
0.3
NNE
12
0.3
SSW
18
0.3
SSW
17
0.3
SSW
16
0.3
SSW
16
Energy kJ
21
5
4
7
14
19
16
16
8
24
40
10
67
29
29
62
57
52
49
Wind waves
Height (m)
Direction
Period (s)
2.3
ENE
8
2.5
ENE
8
2.2
ENE
8
2.1
ENE
8
2
ENE
8
2.2
ENE
7
2.1
ENE
7
2.1
ENE
7
1.9
ENE
7
1.7
ENE
7
1.6
ENE
7
1.8
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
1.7
ENE
7
1.6
ENE
7
1.5
ENE
7
1.5
ENE
7
1.4
ENE
7
0.8
ESE
7
Energy kJ
738
824
643
545
488
522
456
444
390
327
280
316
293
251
218
255
233
229
236
214
63
Nearest Offshore or Glassy
Rating
(10 max)
1
1
2
1
2
2
1
3
2
2
2
2
2
2
2
2
2
1
1
1
1
Distance (km)
166
165
26
24
26
26
24
26
24
24
24
2
2
5
2
2
2
2
2
2
2
Best forecast wave conditions in Oahu
Rating
(10 max)
2
2
2
2
2
3
2
3
3
2
2
2
2
2
2
2
1
1
1
Best forecast wave conditions in United States
Rating
(10 max)
1
1
2
2
2
3
2
3
3
3
3
2
2
2
4
2
2
4
1
1
4
Header Global
Rating
(10 max)
5
5
4
4
4
9
6
7
7
8
6
7
9
8
5
5
5
5
5
6
6
  • 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 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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