Perth weather in May 2025

Expect daytime maximum temperatures of 21°C in Perth, Western Australia in May based on long-term weather averages. There are 6 hours of sunshine per day on average with 12 days with some rainfall and typically 112 mm of rainfall in the month.

  • 21°C maximum daytime temperature in May in Perth21
    21°C max day temperature
  • 6 hours of sunshine per day
  • 12 days with some rainfall in May in Perth12
    12 days with some rainfall
  • 11°C minimum night-time temperature in May in Perth11
    11°C min night temperature
  • 10 hours of daylight per day in May in Perth10
    10 hours of daylight per day
  • No heat & humidity in May in Perth0
    No heat & humidity
  • 112 mm monthly rainfall in May in Perth112
    112 mm of monthly rainfall
  • UV (maximum) index 4 (Moderate) in May in Perth4
    4 (Moderate) UV index
  • 21°C sea temperature in May in Perth21
    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.

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

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More about Australia

How hot is it in Perth in May?

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

How sunny is it in Perth in May?

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

How warm is the sea around Perth in May?

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

Does it rain in Perth in May?

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

Perth May sunrise & sunset times

Browse the sunrise and sunset times for Perth in May 2025. Select a month to view Perth sunrise and sunset times for the next 12 months.

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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