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December Weather in Kwinana, Australia

Last updated: August 22, 2025

In December, the average temperature in Kwinana, Australia is a pleasant 22°C (73°F), with a minimum that can dip to 10°C (50°F) and a maximum soaring to 39°C (103°F). Expect minimal rainfall, with 9 mm (0.3 in) spread over 2 days. The air is relatively comfortable, featuring an average humidity of 53%.

December Temperature in Kwinana

In December in Kwinana, the average temperature is 22°C (73°F). Maximums can reach 39°C (103°F), and minimums can drop as low as 10°C (50°F). Given this range, be prepared for warm days and cooler evenings while traveling.

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

The chart illustrates December temperature patterns in Kwinana, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Kwinana, December typically has an average temperature of 22°C (73°F), with highs reaching up to 39°C (103°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec747472676259585759626772
Data source: Temperature data for Kwinana 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 Kwinana

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

December Precipitation Trends in Kwinana

The chart displays monthly precipitation patterns in Kwinana, 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 Kwinana, December typically receives around 9 mm (0.3 inches) of precipitation spread over approximately 2 days.
JanFebMarAprMayJunJulAugSepOctNovDec29562222631161251074544279
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Kwinana

In Kwinana in December, humidity is 53%. With an average temperature of 22°C (73°F), this humidity feels like a warm embrace, making it pleasantly comfortable for exploring the sights and enjoying outdoor activities.

December Average Humidity in Kwinana

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

In Kwinana 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 Kwinana, you can check here.

Maximum UV Index Levels in Kwinana for December

The chart shows the monthly maximum UV Index (UVI) for Kwinana 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 Kwinana typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141411864468111314
Data source: Kwinana 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 Kwinana Compares to Other Months

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

This table compares monthly weather conditions in Kwinana, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (74°F)29 mm (1.1 inches)52%extreme
February Weather23°C (74°F)56 mm (2.2 inches)55%extreme
March Weather22°C (73°F)22 mm (0.9 inches)59%extreme
April Weather20°C (68°F)22 mm (0.9 inches)70%very high
May Weather16°C (62°F)63 mm (2.5 inches)72%high
June Weather15°C (59°F)116 mm (4.6 inches)77%moderate
July Weather14°C (58°F)125 mm (4.9 inches)77%moderate
August Weather14°C (57°F)107 mm (4.2 inches)75%high
September Weather15°C (59°F)45 mm (1.8 inches)71%very high
October Weather17°C (63°F)44 mm (1.7 inches)63%extreme
November Weather19°C (67°F)27 mm (1.1 inches)56%extreme
December Weather22°C (73°F)9 mm (0.3 inches)53%extreme

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