Cloudbreak Swell Window

Mamanuca Islands, Fiji · part of the Cloudbreak spot guide

Swell window (from): 170°–255° (S–WSW)
Best direction: ~215° (SW)
Period sweet spot: 15–20 s
Open-ocean height (Hs): 8–16 ft
Resulting faces: 6–35 ft

Open-ocean vs. the face: the heights on buoys and forecast models are significant wave height (Hs) in deep water. What you ride is the breaking face, which depends on period, direction and this break's bathymetry — that's why the two rows above differ. PierMonkey's spot ratings already do this conversion for you.

South to southwest is what matters — the productive core runs about 170° to 240°, best around 200–225°; a more westerly angle makes it thicker and heavier while a more southerly one makes a longer peeling point. Period is king: 15 seconds is good, 17-plus is money, and 18–20 seconds is a giant day.

The reef-focusing story is the signature: the June 2012 swell was only about 13 ft of open-ocean height yet made 30-to-35-foot faces — roughly triple amplification. A giant Cloudbreak day is a combination, not a single number: open-ocean height of around 4 m at 18–20 seconds from 200–225°. The model height and the breaking face are two very different scales here.

The storm corridor

Typical swell corridor to Cloudbreak: Southern Ocean and Tasman lows south of New Zealand sending long-period S–SW groundswell up the Fiji corridor — Typical swell corridor (schematic straight line): Southern Ocean and Tasman lows south of New Zealand sending long-period S–SW groundswell up the Fiji corridor.