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December Weather in Westbury, Australia

Last updated: August 22, 2025

In Westbury, Australia, the average temperature in December hovers around 15°C (59°F). Expect variations, with minimums dipping to 3°C (37°F) and maximums soaring to 32°C (89°F). During this period, you'll encounter approximately 65 mm (2.6 in) of precipitation spread across 9 days, accompanied by an average humidity of 71%. Stay prepared for a mix of mild weather and occasional rain!

December Temperature in Westbury

In December in Westbury, the average temperature is 15°C (59°F). Maximums can reach 32°C (89°F), and minimums can be as low as 3°C (37°F). This makes it a great time for travelers to enjoy a mix of warm days and cooler evenings, perfect for outdoor adventures and sightseeing.

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

The chart illustrates December temperature patterns in Westbury, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Westbury, December typically has an average temperature of 15°C (59°F), with highs reaching up to 32°C (89°F) and lows dropping to around 3°C (37°F).
JanFebMarAprMayJunJulAugSepOctNovDec636058524743434346515559
Data source: Temperature data for Westbury 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 Westbury

In Westbury in December, the precipitation amount is 65 mm (2.6 in) over the course of 9 days.

December Precipitation Trends in Westbury

The chart displays monthly precipitation patterns in Westbury, 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 Westbury, December typically receives around 65 mm (2.6 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec51807268886310581791016565
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Westbury

In Westbury in December humidity is 71%. With an average temperature of 15°C (59°F), this humidity feels like a damp embrace, making outdoor activities slightly uncomfortable and encouraging travelers to seek shade or indoor attractions to escape the muggy air.

December Average Humidity in Westbury

This chart illustrates the average monthly humidity levels in Westbury, 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 Westbury is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec69%68%73%77%83%83%84%83%80%76%76%71%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Westbury

In Westbury in December, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Westbury.

Maximum UV Index Levels in Westbury for December

The chart shows the monthly maximum UV Index (UVI) for Westbury 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 Westbury typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec13111064224681113
Data source: Westbury 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 Westbury Compares to Other Months

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

This table compares monthly weather conditions in Westbury, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)51 mm (2.0 inches)69%extreme
February Weather15°C (60°F)80 mm (3.1 inches)68%extreme
March Weather15°C (58°F)72 mm (2.8 inches)72%very high
April Weather11°C (52°F)68 mm (2.7 inches)77%high
May Weather8°C (48°F)88 mm (3.5 inches)83%moderate
June Weather6°C (44°F)63 mm (2.5 inches)83%low
July Weather6°C (43°F)105 mm (4.1 inches)84%low
August Weather6°C (44°F)81 mm (3.2 inches)83%moderate
September Weather8°C (46°F)78 mm (3.1 inches)80%high
October Weather11°C (51°F)101 mm (4.0 inches)76%very high
November Weather13°C (55°F)65 mm (2.5 inches)76%extreme
December Weather15°C (59°F)65 mm (2.6 inches)71%extreme

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