Geraldton weather in December 2025

Expect 30°C daytime maximum temperatures in the shade with on average 11 hours of sunshine per day in Geraldton in December. Check more long-term weather averages for Geraldton in December before you book your next holiday to Western Australia in 2025/2026.

  • 30°C maximum daytime temperature in December in Geraldton30
    30°C max day temperature
  • 11 hours of sunshine per day
  • 3 days with some rainfall in December in Geraldton3
    3 days with some rainfall
  • 16°C minimum night-time temperature in December in Geraldton16
    16°C min night temperature
  • 14 hours of daylight per day in December in Geraldton14
    14 hours of daylight per day
  • Moderate heat & humidity in December in GeraldtonM
    Moderate heat & humidity
  • 4 mm monthly rainfall in December in Geraldton4
    4 mm of monthly rainfall
  • UV (maximum) index 11+ (Extreme) in December in Geraldton11
    11+ (Extreme) UV index
  • 21°C sea temperature in December in Geraldton21
    21°C sea temperature

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The December weather guide for Western Australia (Geraldton) 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 Geraldton in December?

Daytime temperatures usually reach 30°C in Geraldton in December with moderate heat and humidity, falling to 16°C at night.

How sunny is it in Geraldton in December?

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

How warm is the sea around Geraldton in December?

The average sea temperature around Geraldton in December is 21°C.

Does it ever rain in Geraldton in December?

There are usually 3 days with some rain in Geraldton in December and the average monthly rainfall is 4mm.

Geraldton December sunrise & sunset times

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

JanFebMarAprMayJunJulAugSepOctNovDec

Date Sunrise times Sunset times
Monday, 1st December 2025 05:16 19:06
Tuesday, 16th December 2025 05:18 19:16
Wednesday, 31st December 2025 05:26 19:23

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