Mild
Average highs are around 26°C, so days are mild rather than hot.
December verdict
Adelaide, South Australia, Australia in December
Weather score70Very good
Very good for holiday weather
Average highs are around 26°C, so days are mild rather than hot. Sunshine averages 9.1h per day, so bright days are a strong part of the month. Rainfall averages 27mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
26°C
Rain
27mm
Sun
9.1h
Sea
20°C
Weather score
70
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 27mm, which is relatively low for holiday planning.
Bright
Sunshine averages 9.1h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 20°C, so the water can feel cool.
Map
Weather map
Compare Adelaide, South Australia, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December26°C average high
December sits in the warmer part of the year, so midday sightseeing can feel heavier than in cooler months.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
December27mm average rain
December sits on the drier side of Adelaide's year, which helps with sightseeing and transfers.
Driest monthsJanuary to April and October to December
This is the drier part of the year, when outdoor plans usually need less weather flexibility.
Sun
December9.1 hours average sun
December is brighter than Adelaide's yearly average, though the strongest sunshine usually sits closer to the peak months.
Brightest monthsJanuary to February and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December20°C average sea
December sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJanuary to March
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
Weather score
December70 weather score
December scores above Adelaide's yearly average, so the overall weather mix is stronger than most months.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
