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December Weather in Ballan, Australia

Last updated: August 22, 2025

In Ballan, Australia, the average temperature in December hovers around 16°C (61°F), offering a pleasant climate. However, temperatures can range dramatically, with a minimum of 3°C (38°F) and soaring up to a sweltering 39°C (103°F). Expect approximately 63 mm (2.5 in) of precipitation spread over 8 days, complemented by an average humidity of 50% for a balanced, yet dynamic weather experience.

December Temperature in Ballan

In December in Ballan, the average temperature is 16°C (61°F), with maximums reaching 39°C (103°F) and minimums dropping as low as 3°C (38°F). This wide temperature range makes Ballan an ideal destination for travelers seeking both warmth and a refreshing climate.

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

The chart illustrates December temperature patterns in Ballan, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Ballan, December typically has an average temperature of 16°C (61°F), with highs reaching up to 39°C (103°F) and lows dropping to around 3°C (38°F).
JanFebMarAprMayJunJulAugSepOctNovDec656260544844434448525760
Data source: Temperature data for Ballan 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 Ballan

In Ballan in December, the precipitation amount is 63 mm (2.5 in) spread over 8 days.

December Precipitation Trends in Ballan

The chart displays monthly precipitation patterns in Ballan, 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 Ballan, December typically receives around 63 mm (2.5 inches) of precipitation spread over approximately 8 days.
JanFebMarAprMayJunJulAugSepOctNovDec374439496752476858797563
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Ballan

In Ballan in December humidity is 50%. With an average temperature of 16°C (61°F), this humidity feels like a comfortable embrace, making it ideal for traveling as it adds a refreshing quality to the cool air, allowing for enjoyable exploration without the discomfort of excessive heat.

December Average Humidity in Ballan

This chart illustrates the average monthly humidity levels in Ballan, 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 Ballan 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 Ballan

In Ballan 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 Ballan, you can check here.

Maximum UV Index Levels in Ballan for December

The chart shows the monthly maximum UV Index (UVI) for Ballan 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 Ballan typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec14121174335791214
Data source: Ballan 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 Ballan Compares to Other Months

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

This table compares monthly weather conditions in Ballan, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (65°F)37 mm (1.5 inches)43%extreme
February Weather17°C (62°F)44 mm (1.7 inches)49%extreme
March Weather16°C (61°F)39 mm (1.5 inches)60%extreme
April Weather12°C (54°F)49 mm (1.9 inches)71%high
May Weather9°C (48°F)67 mm (2.6 inches)79%moderate
June Weather7°C (44°F)52 mm (2.0 inches)81%moderate
July Weather6°C (44°F)47 mm (1.8 inches)83%moderate
August Weather7°C (44°F)68 mm (2.7 inches)79%moderate
September Weather9°C (48°F)58 mm (2.3 inches)72%high
October Weather11°C (52°F)79 mm (3.1 inches)61%very high
November Weather14°C (57°F)75 mm (3.0 inches)59%extreme
December Weather16°C (61°F)63 mm (2.5 inches)50%extreme

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