Backdoor surfForecast / HAW – Oahu / USA

information circle48hr Weather and Surf, issued 7 am Sunday 24 Aug 2025 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
26.9° C
(Which is normal for this time of year)


How big are the waves at Backdoor today?

The current surf forecast for Backdoor at 8AM is: 0.3m 8s primary swell from a North direction (forecast issued at 07:00am August 24). An open ocean swell of 0.2m 16s is not directed at the surf break, a second open ocean swell of 1.5m 8s is not directed at the surf break. The wind direction is predicted to be cross-offshore.

Time (HST) & DateWave HeightWave Period
Morning (24 Aug)1ft (0.3m)8s
Afternoon (24 Aug)1ft (0.3m)7s
Evening (24 Aug)1ft (0.3m)7s

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

Updates in  hr  min  s Forecast update imminent
Sunday
24
Monday
25
Tuesday
26
Wed
27
5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM5AM8AM11AM2PM5PM8PM11PM2AM
Rating
(10 max)
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
0
Swell
Height Map
Wave Height (m) & direction (?)
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.2
N
0.2
N
0.2
N
0.2
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.3
N
0.4
N
0.4
N
0.4
N
Period(s) (?)8887779888888871099999888
Wave
Graph
(?)Metric surfscale
Energy (?)1110101019181818991419263331262424232222232221
Wind
(km/h)
20
E
25
E
25
E
25
E
25
E
20
E
20
E
20
E
20
ESE
20
ESE
20
E
20
E
20
ENE
20
E
25
E
20
E
20
E
25
E
20
E
25
ENE
25
E
20
E
20
ENE
20
E
Wind State (?)
onshore
cross-onshore
cross-shore
cross-offshore
offshore
glassy
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
cross-
off
cross-
off
cross-
off
High Tide
/ height (m)
2:58AM
0.48
3:31PM
0.68
3:39AM
0.51
3:45PM
0.63
4:22AM
0.52
3:54PM
0.57
Low Tide
/ height (m)
8:47AM
0.15
10:00PM
0.21
9:22AM
0.22
10:16PM
0.20
9:57AM
0.29
10:32PM
0.18
Sunday
24
Monday
25
Tuesday
26
Wed
27
Sunrise-6:13-------6:13-------6:13------
Sunset----6:54-------6:53-------6:53---
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
clear
Rain (mm)
------------------------
Temp. °C252526262625252524252626262525252525262626252525
Feels °C (?)242324242424252524242525262424252524252524242525
  • 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

Eyeball surf reportRecent Eyeball Surf Reports for HAW - Oahu

  1. weather stationWind Update Continuing clean conditions at Backdoor (light winds from the W at Wheeler Air Force Base/oahu Airport 23 km from Backdoor). 0.3m 9s swell from the N to make surfable waves.

    Backdoor
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23 km away, 2 h 19 min ago

6 km/h
W
0.0
26.9
Air / Water (°C)
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