Western Australia weather in May 2025

Expect 21°C daytime maximum temperatures in the shade with on average 6 hours of sunshine per day in Western Australia in May. Check more long-term weather averages for Western Australia in May before you book your next holiday to Western Australia in 2025/2026.

  • 21°C maximum daytime temperature in May in Western Australia (Perth)21
    21°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in May in Western Australia (Perth)12
    12 days with some rainfall
  • 11°C minimum night-time temperature in May in Western Australia (Perth)11
    11°C min night temperature
  • 10 hours of daylight per day in May in Western Australia (Perth)10
    10 hours of daylight per day
  • No heat & humidity in May in Western Australia (Perth)0
    No heat & humidity
  • 112 mm monthly rainfall in May in Western Australia (Perth)112
    112 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Western Australia (Perth)4
    4 (Moderate) UV index
  • 21°C sea temperature in May in Western Australia (Perth)21
    21°C sea temperature

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The May weather guide for Western Australia (Perth) shows long term weather averages processed from data supplied by CRU (University of East Anglia), the Met Office & the Netherlands Meteorological Institute. Find out more about our data sources.

Top Western Australia destinations

Below are average maximum temperatures at popular countries, regions and places in Western Australia in May. Select a holiday destination to see more weather parameters.

All Western Australia destinations

Metric (°C / mm)  |  Imperial (°F / inches)

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More about Australia

How hot is it in Western Australia in May?

Daytime temperatures usually reach 21°C in Perth, Western Australia in May, falling to 11°C at night.

How sunny is it in Western Australia in May?

There are normally 6 hours of bright sunshine each day in Perth, Western Australia in May - that's 54% of daylight hours.

How warm is the sea around Western Australia in May?

The average sea temperature around Perth, Western Australia in May is 21°C.

Does it rain in Western Australia in May?

There are usually 12 days with some rain in Perth, Western Australia in May and the average monthly rainfall is 112mm.

Western Australia May sunrise & sunset times

Browse the sunrise and sunset times for Western Australia in May 2025. Select a month to view Western Australia sunrise and sunset times for the next 12 months. The Western Australia sunrise and sunset times shown below are for Perth.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st May 2025 06:48 17:39
Friday, 16th May 2025 06:59 17:27
Saturday, 31st May 2025 07:08 17:20

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