Weligama Swell Window

Southern Province, Sri Lanka · part of the Weligama spot guide

Swell window (from): 140°–250° (SE–WSW)
Best direction: ~200° (SSW)
Period sweet spot: 10–16 s
Open-ocean height (Hs): 1–6 ft
Resulting faces: 1–6 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.

The window runs from southeast through south to southwest, matching the bay’s roughly south orientation opening to the southern Indian Ocean. South to southwest around 180 to 225° is the consensus sweet spot; southeast energy still enters but with more refraction loss. Period around 10-to-16 seconds is best, with long-period groundswell wrapping into the bay to produce the cleanest long rollers.

The key point is that it stays small and gentle: even a healthy open-ocean height is filtered down to a friendly face inside the bay, so the model height will routinely read larger than what you actually ride.

The storm corridor

Typical swell corridor to Weligama: Roaring Forties lows sending long-period S–SW groundswell across the Indian Ocean to the south coast — Typical swell corridor (schematic straight line): Roaring Forties lows sending long-period S–SW groundswell across the Indian Ocean to the south coast.