Reef
right
Level 10/10

Backdoor

North Shore, Oahu, USA (HI)
🪸Sharp reef😮‍💨Hold-downs👊Localism👥Crowded⚠️Shallow

Backdoor is the right-hand barrel at the Pipeline reef—sharing the same takeoff zone but breaking in the opposite direction. When NW to NNW swells arrive with shorter periods, they break up the swell lines and create peaky A-frames, allowing the right to peel with ferocious power over extremely shallow reef.

3-Day Forecast
Today
30
15
Poor
3.2m
@12s
21km/h
Tue
31
1
Poor
2.9m
@11s
23km/h
Wed
1
0
Poor
2.5m
@10s
19km/h
+7
Unlock

Today's Conditions

Swell
3.2m
NNE(12°)
Score: 24/25
Period
12s
Medium period swell
Score: 6/25
Wind
21km/h
NE(52°)
Score: 1/25
Weather
23°C
0.0mm51%
Windswell Component
1.2mNE@4s
Secondary Swell
0.5mNW
Forecast Confidence
100%
Sources: open-meteo-marine, open-meteo-weather
Best Session
morning
AM: 16 km/h NE|PM: 23 km/h NE
16 km/h vs 23 km/h afternoon
Low tide at 7am (0.3m)

Location & Conditions

Loading map...
0°45°90°135°180°225°270°315°NESW
Swell
Wind
View in OpenStreetMap
Showing forecast for today

Tide Times

1:00 am
High tide - 0.78m
7:30 am
Low tide - 0.31m
1:30 pm
High tide - 0.64m
7:06 pm
Low tide - 0.34m
Times shown in spot-local time.

Strike Score Breakdown

15
Poor
Components
Swell Direction6/25
Swell Size24/25
Swell Period6/25
Wind1/25
Raw Score37/100
Adjustments
🤢 Wind History-17
⚠️ Weak Component-5
Adjusted Score15/100
Confidence
Multiplier×1.00
Final Score15
🤢 Morning Sickness

Spot Details

Swell Requirements

Optimal direction
NNW (330°)
Direction range
315° - 350°
Size range
1.8m - 3.6m
Ideal size
3.2m
Height multiplier
0.97×
Ideal period
16s+

Wind Requirements

Optimal direction
ESE (120°)
Offshore range
90° - 160°

Tide Requirements

Optimal tide
low to mid
Optimal range
0.3m - 1.2m
Danger below
0.1m

Water temp

25°C

Wetsuit

Boardshorts / Rashguard

Bottom

Reef

Max wave face

5m+

Board

Shortboard

Consistency

6/10

Difficulty

10/10

Crowd level

10/10

Access: Same as Pipeline. Beach access at Ehukai Beach Park.

Best Season

Peak: Nov, Dec, Jan, Feb

Secondary: Mar, Oct

Nov-Feb peak. NW-NNW swells create peaky A-frames that produce the right.

Getting There

Airport
HNL
Drive time
55 min
Data quality
verified

Strike Log

Community Discussion