Surfing Backdoor: The Complete Guide

Backdoor is a reef break located in North Shore, Oahu, USA (HI), offering a right-hander along North America's diverse surf scene. Backdoor is the right-hand barrel at the Pipeline reef—sharing the same takeoff zone but breaking in the opposite direction. Rated as pros-only difficulty with very crowded conditions, this reef break is a worthy destination for surfers looking beyond the usual suspects.

Best Conditions

Swell Direction: The ideal swell direction is NNW (330°), with workable conditions from NW to N (315°–350°). Swells outside this window will either miss the break or produce disorganized waves.

Swell Size: Backdoor needs a minimum of 1.8m / 6ft to start working and handles swells up to 3.6m / 12ft before conditions deteriorate.

Swell Period: Look for a swell period of at least 12 seconds, with 16 seconds being the sweet spot. Longer periods deliver more organized, powerful waves with better shape.

Wind: True offshore here blows from the ESE (120°). The full offshore range spans E to SSE (90°–160°). Glassy conditions under 4km/h from any direction also produce excellent surf. Plan for early morning dawn patrol sessions.

Tide: This spot works best at low to mid tide. Optimal tide range is 0.3m–1.2m. Avoid surfing when the tide drops below 0.1m — it becomes dangerously shallow.

When to Go

Primary Season: The prime window at Backdoor runs November, December, January, February (Nov–Feb). This is when swell consistency and direction align most reliably with the break.

Secondary Season: A secondary window opens March, October (Mar–Oct). While not as consistent, patient surfers can still score quality sessions during this period.

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

Water Temperature: Expect water temperatures around 25°C / 77°F. A shorty or spring suit is recommended for longer sessions.

Getting There

The nearest airport is HNL, roughly 55 minutes by car.

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

Hazards & Tips

Known Hazards:

🪸 Sharp reef — Shallow reef, booties recommended
😮‍💨 Hold-downs — Long hold-downs possible
👊 Localism — Heavy local enforcement
👥 Crowded — Gets very crowded
⚠️ Shallow — Very shallow at low tide

Super hollow, deep tube over very shallow reef. Shorter period NW-NNW swells break up lines creating peaky A-frames.

Safety Tips:

Wear reef booties to protect your feet from sharp coral and rock
Respect the lineup, wait your turn, and be friendly. A little humility goes a long way
Surf early mornings or off-peak days to avoid the worst of the crowds
Build your breath-hold confidence before tackling bigger days here

Skill Level: This spot is rated pros-only (10/10). Crowd Level: Typically very crowded (10/10). Recommended board: a performance shortboard.

Check the Live Forecast

Planning a session at Backdoor? Check the live forecast on Strike Mission to see today's conditions and the 10-day outlook. Our Strike Score algorithm rates this spot from 0 to 100 every day, factoring in swell direction, size, period, wind, and tide — so you know exactly when to paddle out.

Don't leave your next surf trip to chance. Let the data tell you when Backdoor is firing.

*Conditions data sourced from Strike Mission's verified spot database.*