Surfing Occy's Left: The Complete Guide

Occy's Left is a reef break located in West Sumba, Indonesia, offering a left-hander along Southeast Asia's tropical lineups. 300m ride through barrels. Rated as advanced difficulty with uncrowded conditions, this reef break is a worthy destination for surfers looking beyond the usual suspects.

Best Conditions

Swell Direction: The ideal swell direction is SW (215°), with workable conditions from SSW to SW (200°–230°). Swells outside this window will either miss the break or produce disorganized waves.

Swell Size: Occy's Left needs a minimum of 1.2m / 4ft to start working and handles swells up to 3.7m / 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 E (90°). The full offshore range spans NE to SE (45°–135°). 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 mid tide. Optimal tide range is 0.5m–1.5m.

When to Go

Primary Season: The prime window at Occy's Left runs April, May, June, July, August, September, October (Apr–Oct). This is when swell consistency and direction align most reliably with the break.

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

Season Notes: Best Apr-Oct (dry season, SE trades offshore). Swells year-round but wet season brings onshore winds.

Water Temperature: Expect water temperatures around 28°C / 82°F. Boardshorts or a thin rashguard are all you need.

Getting There

The nearest airport is TMC, roughly 60 minutes by car.

Hazards & Tips

Known Hazards:

🪸 Sharp reef — Shallow reef, booties recommended
😮‍💨 Hold-downs — Long hold-downs possible

Safety Tips:

Wear reef booties to protect your feet from sharp coral and rock
Build your breath-hold confidence before tackling bigger days here

Skill Level: This spot is rated advanced (7/10). Crowd Level: Typically uncrowded (2/10).

Check the Live Forecast

Planning a session at Occy's Left? 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 Occy's Left is firing.

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