Perth weather in January 2026

Expect 31°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Perth in January based on long-term weather averages. There is usually 3 days with some rainfall and 8 mm of average monthly rainfall in January.

  • 31°C maximum daytime temperature in January in Perth31
    31°C max day temperature
  • 11 hours of sunshine per day
  • 3 days with some rainfall in January in Perth3
    3 days with some rainfall
  • 18°C minimum night-time temperature in January in Perth18
    18°C min night temperature
  • 14 hours of daylight per day in January in Perth14
    14 hours of daylight per day
  • Moderate heat & humidity in January in PerthM
    Moderate heat & humidity
  • 8 mm monthly rainfall in January in Perth8
    8 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in January in Perth11
    11+ (Extreme) UV index
  • 22°C sea temperature in January in Perth22
    22°C sea temperature

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The January 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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How hot is it in Perth in January?

Daytime temperatures usually reach 31°C in Perth in January with moderate heat and humidity, falling to 18°C at night.

How sunny is it in Perth in January?

There are normally 11 hours of bright sunshine each day in Perth in January - that's 81% of daylight hours.

How warm is the sea around Perth in January?

The average sea temperature around Perth in January is 22°C.

Does it ever rain in Perth in January?

There are usually 3 days with some rain in Perth in January and the average monthly rainfall is 8mm.

Perth January sunrise & sunset times

Browse the sunrise and sunset times for Perth in January 2026. Select a month to view Perth sunrise and sunset times for the next 12 months.

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Thursday, 1st January 2026 05:14 19:26
Friday, 16th January 2026 05:26 19:26
Saturday, 31st January 2026 05:40 19:19

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