September keeps the dry-season sunshine while the summer wave of visitors recedes. Rates drop 20–30% from August, seas stay calm for Nusa Penida and Gili crossings, and underwater visibility is superb around Amed. Arguably the best value-to-weather ratio on the calendar — and a smart moment to lock in New Year dates.
FAQ
How warm is the sea in September?
Around 27°C — comfortable for long swims. Reef-protected beaches like Sanur and Nusa Dua are calm; surf beaches have waves year-round, so follow the flags.
How rainy is Bali in September?
Roughly 5 days with rain. Showers are rare and brief — rain will not shape your plans.
Is September a good month to visit?
High-season weather without the crowds: the insider month.
Planning a trip in September?
Direct rentals across 15 areas of Bali with free cancellation — tell us your dates and the manager will send options within an hour.