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December Weather in Katanning, Australia

Last updated: August 22, 2025

In December, the average temperature in Katanning, Australia is a pleasant 20°C (68°F). Expect temperatures to range from a cool 6°C (42°F) to a balmy 39°C (103°F). During this time, you can anticipate 9 mm (0.3 in) of precipitation over about 2 days, and enjoy a comfortable average humidity of 53%.

December Temperature in Katanning

In December in Katanning, the average temperature is 20°C (68°F). Maximums can reach 39°C (103°F) and minimums can be as low as 6°C (42°F). Be prepared for a wide range of temperatures, ensuring you pack both light clothing for warm days and layers for cooler evenings.

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

The chart illustrates December temperature patterns in Katanning, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Katanning, December typically has an average temperature of 20°C (68°F), with highs reaching up to 39°C (103°F) and lows dropping to around 6°C (42°F).
JanFebMarAprMayJunJulAugSepOctNovDec696866615552505053576167
Data source: Temperature data for Katanning 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 Katanning

In Katanning in December, the precipitation amount is 9 mm (0.3 in) over a period of 2 days.

December Precipitation Trends in Katanning

The chart displays monthly precipitation patterns in Katanning, 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 Katanning, December typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec8543022374056583728249
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Katanning

In Katanning in December humidity is 53%. With an average temperature of 20°C (68°F), this humidity feels like a gentle embrace, making it quite pleasant for traveling.

December Average Humidity in Katanning

This chart illustrates the average monthly humidity levels in Katanning, 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 Katanning is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec53%55%59%70%72%77%77%75%71%63%56%53%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Katanning

In Katanning 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 Katanning, you can check here.

Maximum UV Index Levels in Katanning for December

The chart shows the monthly maximum UV Index (UVI) for Katanning 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 Katanning typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412864468101314
Data source: Katanning 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 Katanning Compares to Other Months

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

This table compares monthly weather conditions in Katanning, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (69°F)8 mm (0.3 inches)52%extreme
February Weather20°C (69°F)54 mm (2.1 inches)55%extreme
March Weather19°C (66°F)30 mm (1.2 inches)59%extreme
April Weather16°C (61°F)22 mm (0.8 inches)70%very high
May Weather13°C (55°F)37 mm (1.4 inches)72%high
June Weather11°C (52°F)40 mm (1.6 inches)77%moderate
July Weather10°C (50°F)56 mm (2.2 inches)77%moderate
August Weather10°C (50°F)58 mm (2.3 inches)75%high
September Weather11°C (53°F)37 mm (1.5 inches)71%very high
October Weather14°C (57°F)28 mm (1.1 inches)63%very high
November Weather16°C (62°F)24 mm (0.9 inches)56%extreme
December Weather20°C (68°F)9 mm (0.3 inches)53%extreme

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