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December Weather in Saint Leonards, Australia

Last updated: August 22, 2025

In December, the average temperature in Saint Leonards, Australia hovers around 17°C (63°F). You can expect a pleasant range, with minimums dipping to 10°C (51°F) and soaring up to a maximum of 30°C (86°F). During this time, the area typically receives about 57 mm (2.2 in) of precipitation spread over 9 days, resulting in an average humidity of 69%. Enjoy the mild weather while preparing for occasional rain!

December Temperature in Saint Leonards

In December in Saint Leonards, the average temperature is 17°C (63°F). The maximum can reach 30°C (86°F), while the minimum can drop to as low as 10°C (51°F). This mild climate makes Saint Leonards an ideal destination for travelers looking to enjoy pleasant weather and outdoor activities.

December Weather in Saint Leonards: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Saint Leonards, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Saint Leonards, December typically has an average temperature of 17°C (63°F), with highs reaching up to 30°C (86°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec666665615754525254576062
Data source: Temperature data for Saint Leonards 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 Saint Leonards

In Saint Leonards in December, the total precipitation amount is 57 mm (2.2 in) over the course of 9 days.

December Precipitation Trends in Saint Leonards

The chart displays monthly precipitation patterns in Saint Leonards, 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 Saint Leonards, December typically receives around 57 mm (2.2 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec435647668867537665746857
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
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December Humidity in Saint Leonards

In Saint Leonards in December, humidity is 69%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities feel slightly heavier, yet still comfortable for exploring.

December Average Humidity in Saint Leonards

This chart illustrates the average monthly humidity levels in Saint Leonards, 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 Saint Leonards is approximately 69%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%67%71%75%80%80%81%79%76%72%72%69%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Saint Leonards

In Saint Leonards 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 Saint Leonards.

Maximum UV Index Levels in Saint Leonards for December

The chart shows the monthly maximum UV Index (UVI) for Saint Leonards 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 Saint Leonards typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec13121174334791113
Data source: Saint Leonards 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 Saint Leonards Compares to Other Months

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

This table compares monthly weather conditions in Saint Leonards, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather19°C (66°F)43 mm (1.7 inches)65%extreme
February Weather19°C (66°F)56 mm (2.2 inches)67%extreme
March Weather18°C (65°F)47 mm (1.8 inches)71%extreme
April Weather16°C (61°F)66 mm (2.6 inches)75%high
May Weather14°C (57°F)88 mm (3.5 inches)80%moderate
June Weather12°C (54°F)67 mm (2.6 inches)80%moderate
July Weather11°C (52°F)53 mm (2.1 inches)80%moderate
August Weather11°C (52°F)76 mm (3.0 inches)79%moderate
September Weather12°C (54°F)65 mm (2.6 inches)76%high
October Weather14°C (57°F)74 mm (2.9 inches)72%very high
November Weather15°C (60°F)68 mm (2.7 inches)72%extreme
December Weather17°C (63°F)57 mm (2.2 inches)69%extreme

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