Warm
Average highs sit around 28°C, giving warm days by monthly-average standards.
December verdict
Perth, Western Australia, Australia in December
Weather score83Very good
Very good for holiday weather
Average highs sit around 28°C, giving warm days by monthly-average standards. Sunshine averages 11h per day, so bright days are a strong part of the month. Rainfall averages 13mm, which is relatively low for holiday planning.
December weather
Monthly averages
Temp
28°C
Rain
13mm
Sun
11h
Sea
21°C
Weather score
83
Very good
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Drier
Rainfall averages 13mm, which is relatively low for holiday planning.
Bright
Sunshine averages 11h per day, so bright days are a strong part of the month.
Cool sea
Sea temperatures average 21°C, so the water can feel cool.
Map
Weather map
Compare Perth, Western Australia, Australia with nearby places by weather score, rain, sun, temperature, and swim conditions.
Temperature
December28°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
December13mm average rain
December is one of Perth's driest months, making outdoor days easier to plan than in wetter parts of the year.
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
December11 hours average sun
December is one of Perth's sunniest months, with some of the strongest bright-day conditions in the yearly averages.
Brightest monthsJanuary to February and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
December21°C average sea
December is close to Perth's yearly sea-temperature average, so swimming comfort is fairly typical.
Warmest seaJanuary to May
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
Weather score
December83 weather score
December is one of Perth's best weather-score months, combining the strongest overall balance in the yearly averages.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
