Vejret i Uluwatu i september

Forum posters describe September as genuinely good and mostly dry across Bali, with any rain typically arriving in the early evening or at night (commonly cited as starting around 3:30pm on a rainy day) rather than disrupting daytime plans. Temperatures stay comfortable, neither too hot nor cool. Posters consistently flag Bali's real microclimate variation - it can be raining in one spot while completely dry a mile away, with inland areas (Ubud and similar) generally wetter than the south coast where Jimbaran sits, one of the island's more reliably dry spots. The clear trade-off for the good September weather: this falls within Bali's July-September peak season, further boosted by Australian school holidays, so posters note it's also one of the more crowded times to visit.

Uluwatu-forum and surf-guide threads on July agree it's the peak of the low-rain season and the peak of the swell: the year's biggest groundswells arrive this month, reliable SE trade winds blow offshore into the Bukit Peninsula's west-facing breaks every morning, and rainfall runs among its lowest totals of the year. The trade-off is crowding - the lineup itself is described as resembling a small city by mid-month, though most surfers call the wave quality worth it. Wind is the other consistent theme: mornings run clean and glassy, but afternoons turn genuinely blustery, choppy enough to affect snorkeling and noticeable enough that clifftop restaurant tables catch a steady breeze through the evening. Warm, sunny days are the norm. The record: 27.4C days, 24.5C nights, 57mm across 18 days, a 27.6C sea, 73 percent humidity and 10.9 hours of sun - more scattered rain days than the guides' "minimal rainfall" framing suggests.