Hottest (avg)
#3 / 12
Adelaide in December
December weather, climate averages, and packing tips.
Avg High
Avg Low
Rain
Daylight 14h
What to expect
December marks a typically warm period of summer, where the weather is warming up. Daytime highs average 26°C / 78°F, dropping to 15°C / 59°F at night.
It is one of the drier times of year, though occasional showers are still possible. The sun is very strong at this time of year, making sun protection essential during the day.
December in context
How it compares to the rest of the year in Adelaide.
Wettest (avg)
#9 / 12
Daylight Hours
#1 / 12
Windiest (avg)
#4 / 12
Highest UV
#1 / 12
Most Humid
#11 / 12
Temperature
- Daytime high
-
- Nighttime low
-
- Feels like (avg)
-
Sunshine
- Daylight
- 14.5 hours
- UV index (max)
- 9
- Typical sun hours
- 05:57 – 20:24
Rain & Snow
- Total
-
- Rainy days
- 6
- Cloud cover
- 42%
- Snowfall
-
Humidity & Wind
- Humidity (avg)
- 55%
- Wind (avg)
-
- Wind (max gusts)
-
Frequently asked questions
Is December a good time to visit Adelaide?
Typical December days in Adelaide reach highs of 26°C (79°F) with nights around 15°C (59°F). It usually feels warm by day and mild after dark. Overall, December sits in the middle of the Adelaide climate range.
What are temperatures like in December?
Daytime temperatures in December typically peak near 26°C (79°F), while nights drop to around 15°C (59°F). Expect warm afternoons and mild evenings.
How much does it rain in December?
Rainfall in December averages 24 mm (0.94 in) across roughly 6 days. Overall it is a moderately wet time of year, so showers are usually brief rather than all-day downpours.
How many hours of daylight are there in December?
You can expect about 14 hours of daylight in December. Sunrise is typically around 05:57 and sunset near 20:24. You get long days with comfortable amounts of daylight.
Does the weather change during December?
December often starts off a little cooler and becomes noticeably warmer by the end of the month.
How strong is the sun in December?
UV levels frequently reach very high levels (around 9), so strong sun protection is essential, especially around midday.
Is it windy in December?
In December, average wind speeds are around 17 km/h (11 mph), with gusts on the windiest days reaching about 56 km/h (35 mph). On the ground, it is it can feel quite windy at times, particularly when weather systems move through.