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December Weather in Kojonup, Australia

Last updated: August 22, 2025

In December, the average temperature in Kojonup, Australia is a pleasant 20°C (68°F), but be prepared for a range—minimums can dip to 6°C (42°F) while maximums soar to 39°C (103°F). Expect a bit of rain, with 10 mm (0.4 in) of precipitation expected over 2 days. The air is fairly comfortable, with an average humidity of 53%.

December Temperature in Kojonup

In December in Kojonup, 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 Kojonup: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Kojonup, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kojonup, 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).
JanFebMarAprMayJunJulAugSepOctNovDec696966615552505053576168
Data source: Temperature data for Kojonup 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 Kojonup

In Kojonup in December, the precipitation amount is 10 mm (0.4 in) over a period of 2 days.

December Precipitation Trends in Kojonup

The chart displays monthly precipitation patterns in Kojonup, 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 Kojonup, December typically receives around 10 mm (0.4 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec95530223842575939272410
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kojonup

In Kojonup 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 Kojonup

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

In Kojonup 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 Kojonup, you can check here.

Maximum UV Index Levels in Kojonup for December

The chart shows the monthly maximum UV Index (UVI) for Kojonup 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 Kojonup typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151412854468101314
Data source: Kojonup 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 Kojonup Compares to Other Months

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

This table compares monthly weather conditions in Kojonup, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)9 mm (0.4 inches)52%extreme
February Weather20°C (69°F)54 mm (2.1 inches)55%extreme
March Weather19°C (67°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)38 mm (1.5 inches)72%moderate
June Weather11°C (52°F)42 mm (1.7 inches)77%moderate
July Weather10°C (50°F)57 mm (2.2 inches)77%moderate
August Weather10°C (50°F)59 mm (2.3 inches)75%high
September Weather12°C (53°F)39 mm (1.5 inches)71%very high
October Weather14°C (57°F)27 mm (1.1 inches)63%very high
November Weather16°C (62°F)24 mm (1.0 inches)56%extreme
December Weather20°C (68°F)10 mm (0.4 inches)53%extreme

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