Uluwatu Surf Season
Bali, Indonesia · part of the Uluwatu spot guide
Uluwatu’s season is Bali’s defining seasonal story: dry season means offshore, wet season means onshore. The prime window is the dry season, roughly April or May through October and peaking June to August, when the southeast trade winds blow side-offshore into the southwest-facing Bukit breaks from dawn and the Southern Indian Ocean storm belt is at its most active.
Through the wet season, from November to March, the monsoon flips the wind to the northwest and west — onshore — and blows the west coast out even when swell is running. The swell rarely fully switches off here; it is the wind that makes or breaks the season.
Where the swell comes from
The engine is the Roaring Forties — deep lows between about 40° and 60° south fire long-period groundswell north across the whole Indian Ocean, arriving nearly square on the southwest-facing Bukit days later. The peninsula faces the swell window so directly that virtually every Indian Ocean pulse registers, which is why Uluwatu is called a swell magnet.
Historic swells at Uluwatu
The biggest in ~40 years
A roughly 932 mb Southern Ocean low drove a peak day near 15.5 ft at 19 seconds from the south-southwest; observers called the biggest sets around 30 ft, and the Bombie linked into Outside Corner for hundreds-of-metre rides — among the biggest Indonesian swells on record.
Swell of the season
A late-season pulse around 10 ft at 19 seconds from the southwest lit the Bombie as the standout — notable for landing well after the usual mid-winter peak.
First Bombie day of the year
The season’s first proper Bombie swell, around 2–3 m from the south-southwest with a clean easterly offshore.