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December Weather in Wallan, Australia

Last updated: August 22, 2025

In Wallan, Australia, the average temperature in December hovers around 18°C (64°F), providing a comfortable climate. However, temperatures can vary widely, with a minimum of 5°C (42°F) and soaring up to 42°C (108°F). Expect about 74 mm (2.9 in) of precipitation spread over 7 days, contributing to an average humidity of 50%. Come prepared for a mix of weather!

December Temperature in Wallan

In December in Wallan, the average temperature is 18°C (64°F), with maximums reaching up to 42°C (108°F) and minimums dropping as low as 5°C (42°F). Be prepared for a wide range of temperatures to ensure a comfortable travel experience.

December Weather in Wallan: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Wallan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Wallan, December typically has an average temperature of 18°C (64°F), with highs reaching up to 42°C (108°F) and lows dropping to around 5°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec686664575147464751556064
Data source: Temperature data for Wallan generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in Wallan

In Wallan in December, the precipitation amount is 74 mm (2.9 in) over a period of 7 days.

December Precipitation Trends in Wallan

The chart displays monthly precipitation patterns in Wallan, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Wallan, December typically receives around 74 mm (2.9 inches) of precipitation spread over approximately 7 days.
JanFebMarAprMayJunJulAugSepOctNovDec434537506053435355745774
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Wallan

In Wallan in December, humidity is 50%. With an average temperature of 18°C (64°F), this humidity feels like a refreshing embrace, making it quite pleasant for traveling as you can comfortably explore without the discomfort of excessive sweat.

December Average Humidity in Wallan

This chart illustrates the average monthly humidity levels in Wallan, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Wallan is approximately 50%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec43%49%60%71%79%82%83%79%72%61%59%50%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Wallan

In Wallan in December, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Wallan, you can check here.

Maximum UV Index Levels in Wallan for December

The chart shows the monthly maximum UV Index (UVI) for Wallan in December, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In December, the maximum UV index in Wallan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: Wallan December UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

  •  Extreme (11+): Avoid the sun, stay in shade.
  •  Very High (8-10): Limit sun exposure.
  •  High (6-7): Use SPF 30+ and protective clothing.
  •  Moderate (3-5): Midday shade recommended.
  •  Low (0-2): No protection needed.

How December Weather in Wallan Compares to Other Months

Weather in Wallan varies notably across the year, with each month offering distinct climate conditions. This page compares December’s weather to other months in Wallan, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Wallan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather20°C (69°F)43 mm (1.7 inches)43%extreme
February Weather19°C (66°F)45 mm (1.8 inches)49%extreme
March Weather18°C (64°F)36 mm (1.4 inches)60%extreme
April Weather14°C (58°F)50 mm (2.0 inches)71%high
May Weather11°C (51°F)60 mm (2.4 inches)79%moderate
June Weather8°C (47°F)53 mm (2.1 inches)81%moderate
July Weather8°C (47°F)43 mm (1.7 inches)83%moderate
August Weather8°C (47°F)53 mm (2.1 inches)79%moderate
September Weather10°C (51°F)55 mm (2.2 inches)72%high
October Weather13°C (56°F)74 mm (2.9 inches)61%very high
November Weather16°C (60°F)57 mm (2.3 inches)59%extreme
December Weather18°C (64°F)74 mm (2.9 inches)50%extreme

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