Mild
Average highs are around 21°C, so days are mild rather than hot.
May verdict
Perth, Western Australia, Australia in May
Weather score46Mixed
Mixed for holiday weather
Average highs are around 21°C, so days are mild rather than hot. Sunshine averages 5.6h per day, enough for a balanced month. Rainfall averages 112mm, so some wet days are possible.
May weather
Monthly averages
Temp
21°C
Rain
112mm
Sun
5.6h
Sea
21°C
Weather score
46
Mixed
Seasonal climate calendar
TemperatureTemp
RainRain
SunSun
SwimSwim
Weather scoreWeather score
Trip feel
Showers
Rainfall averages 112mm, so some wet days are possible.
Some sun
Sunshine averages 5.6h per day, enough for a balanced 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
May21°C average high
May is on the cooler side of Perth's year, useful if you prefer less intense daytime heat.
Warmest monthsJanuary to March and December
This stretch sets the upper range for average daytime heat.
Rain
May112mm average rain
May sits near Perth's yearly rainfall average, so rain is a normal planning factor rather than an outlier.
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
May5.6 hours average sun
May is one of Perth's cloudier months, so sunshine-led plans are less reliable.
Brightest monthsJanuary to February and December
This stretch has the strongest sunshine in the monthly averages.
Sea temperature
May21°C average sea
May sits in the warmer sea-temperature season, usually making swimming easier to enjoy.
Warmest seaJanuary to May
Sea temperatures are usually near 22°C in this stretch, so swimming comfort is at its strongest.
Weather score
May46 weather score
May scores below Perth's yearly average, so the weather trade-offs are more noticeable.
Best weather monthsJanuary to March and December
These months have the strongest weather score in the monthly averages.
