December is one of the most popular months for Australians to visit Bali — school summer holidays, the Christmas and New Year period, and the relatively short flight from the east coast make it a natural fit. But December also falls squarely in Bali's wet season, which shapes what to expect from the weather and how to plan activities accordingly.

This guide covers the December climate in full, what rain actually looks like in practice, how prices and crowds behave, and how to get the most out of a Bali trip during this festive but wet month. Book your Bali December trip through Traveloka's flights platform.

December sits in the middle of Bali's wet season, which runs broadly from November through March. Temperatures remain warm — daytime highs of around 29°C to 31°C and overnight lows of around 23°C — and humidity is noticeably higher than the dry season months.

For Australians arriving from a summer that can push 35°C or higher in many cities, the temperatures feel comfortable rather than extreme. The defining feature is rain. December is one of the wettest months on average, with rainfall concentrated in the afternoon and evening rather than spread across the full day. Mornings in December are frequently clear and sunny — a pattern that experienced Bali travellers learn to use — with heavy showers arriving from early afternoon through to evening.

All-day rain is unusual; the more typical pattern is a couple of hours of heavy downpour that clears by evening. Nusa Dua and the southern Bukit Peninsula tend to receive less rainfall than Ubud and the central highlands due to their coastal position. Book your Bali stay through Traveloka's hotels platform.

December has a split personality when it comes to pricing. The first two weeks of the month are technically wet season with correspondingly lower hotel rates — a good window if your Australian school holiday dates allow flexibility.

From around 20 December through to the first week of January, prices spike dramatically across the board. Flight fares, hotel rates, and villa prices all surge as Australian school summer holidays, Christmas, and New Year converge. This is the most expensive two-week window in Bali's entire year, and popular properties in Seminyak, Ubud, Canggu, and Nusa Dua can sell out months in advance.

Restaurants at popular beach clubs operate at capacity on Christmas Eve and New Year's Eve, with many venues requiring advance reservations for set menus. If your trip falls in this peak window, book everything — flights, accommodation, and key dining — as early as possible. Find the best December accommodation through Traveloka's hotels platform.

The wet season pattern of clear mornings and afternoon rain creates a natural activity rhythm that works very well for most Bali itineraries. Cultural and temple visits, rice terrace walks, cycling tours, and outdoor excursions are best scheduled for early morning when conditions are reliably clear and the light is at its most beautiful.

Spa and wellness treatments, cooking classes, museum visits, shopping, and indoor dining are naturally suited to the rainy afternoons. Balinese cooking classes in Ubud, traditional healing sessions, and batik workshops are entirely weather-independent and are often easier to book in December than during the crowded high season. The Bali Art festivals and cultural performances continue year-round regardless of weather. Browse December activities through Traveloka's activities platform.

December's wet season swells actually improve conditions at several of Bali's south and west-facing surf breaks. Kuta, Legian, Seminyak, and the Bukit Peninsula spots including Uluwatu and Padang Padang pick up solid groundswells during the wet season, making December a legitimate surf month for intermediate and advanced riders.

Beach swimming at Nusa Dua is less affected by the wet season than west-facing beaches — the reef-protected lagoon remains calm and swimmable throughout December, making it the most reliable beach destination for families during this period. Snorkelling and diving conditions vary by site; always check with local operators on current visibility and sea conditions before booking.

December packing requires a few additional items compared to dry season travel. A compact waterproof jacket or poncho is essential — brief but heavy afternoon downpours can soak through in minutes, and an umbrella is useful but impractical in strong rain. Quick-dry fabrics make a meaningful difference when humidity is high. Reef-safe sunscreen with a high SPF remains important even in December — cloud cover and rain do not significantly reduce UV exposure in tropical latitudes.

Good quality sandals that dry quickly are preferable to leather or fabric footwear that stays wet for hours. Insect repellent is worth packing for evenings, as mosquito activity increases in the wet season. Check Traveloka promotions for the best December Bali flight and hotel deals from Australia.

December in Bali is festive, vibrant, and entirely manageable with the right preparation. As Australia's trusted travel partner for Bali, Traveloka offers flights from all major Australian cities to Bali, a comprehensive selection of hotels across every area and price point, and activities bookable in advance. Check Traveloka promotions for the best December deals and download the app to start planning your Bali holiday.