December · Australia
Best time to visit Kangaroo Island in December Weather, crowds & prices
Weather in Kangaroo Island in December
Average temperature 18°C, 20 mm of rain, about 31 days with 6+ hours of sunshine and 71% humidity — based on the five most recent complete years of ERA5 data (2021–2025).
December score
9.8/10
Ranked #2 of 12 months
- Avg temp
- 18°C
- Rainfall
- 20 mm
- Humidity
- 71%
- Days with 6h+ sun
- 31
- Crowd Density
- Peak Tourist Rush
- Average Expenses
- $$$ · Peak Season Rates ($$$)
December in Kangaroo Island scores 9.8/10 for nature and wildlife travel - one of the top 12-month picks (#2). Expect around 18°C, 20 mm of rain, and roughly 31 days with 6+ hours of sunshine this month.
Kangaroo Island holds seals, wild beaches, and eucalyptus bush-wildlife day trips from Adelaide’s coast. Best window: October-April in the Southern Hemisphere.
December is one of the strongest months in Kangaroo Island (2nd)
December averages 18°C (64°F), the range most people find easiest for walking a city all day without either overheating or losing daylight to weather.
Expect 20 mm of rain — occasional showers rather than washed-out days — alongside about 31 days with 6+ hours of sunshine and 14.4 daylight hours.
A 9.8/10 puts this among the year's best months in Kangaroo Island (2nd of 12); only February scores higher, at 9.8/10.
Pack layers you can shed by midday plus one warm layer for the evening, footwear you can get muddy.
Plan for peak pricing, with this is one of the busiest months here. You are paying the year's highest rates for the year's best conditions — book early or shift a few weeks either side.
Frequently asked
- What is the weather like in Kangaroo Island in December?
- In December, Kangaroo Island averages 18°C, 20 mm of rain, and about 31 days with 6+ hours of sunshine. Its climate-comfort score is 9.8/10.
- Is December a good time to visit Kangaroo Island?
- December earns a 9.8/10 climate-comfort score. Use the year-round chart to weigh the weather against your budget and crowd preferences.
- How much does it rain in Kangaroo Island in December?
- Expect about 20 mm of rain in December. Average humidity is 71% and there are about 31 days with 6+ hours of sunshine.
Curated in Kangaroo Island
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Kangaroo Island, Australia. Live activities and tours from GetYourGuide, matched to this destination.