nomadseason

December Weather in St. Georges Basin, Australia

Last updated: August 22, 2025

In December, the average temperature in St. Georges Basin, Australia is a pleasant 20°C (68°F). However, temperatures can vary significantly, with a minimum of 10°C (51°F) and soaring up to a maximum of 36°C (97°F). Expect an average precipitation of 89 mm (3.5 in) spread over 16 days, accompanied by an average humidity of 71%.

December Temperature in St. Georges Basin

In December in St. Georges Basin, the average temperature is 20°C (68°F). Maximum temperatures can reach 36°C (97°F), while minimums can drop to as low as 10°C (51°F). This makes St. Georges Basin an ideal destination for travelers seeking a pleasant climate with warm days and cooler nights.

December Weather in St. Georges Basin: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in St. Georges Basin, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In St. Georges Basin, December typically has an average temperature of 20°C (68°F), with highs reaching up to 36°C (97°F) and lows dropping to around 10°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec716967625652515257616468
Data source: Temperature data for St. Georges Basin generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

December Precipitation in St. Georges Basin

In St. Georges Basin in December, the precipitation amount is 89 mm (3.5 in) over the course of 16 days.

December Precipitation Trends in St. Georges Basin

The chart displays monthly precipitation patterns in St. Georges Basin, 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 St. Georges Basin, December typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec641321554358524964448211089
Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

December Humidity in St. Georges Basin

In St. Georges Basin in December, humidity is 71%. With an average temperature of 20°C (68°F), this humidity feels like a warm, moist embrace that can quickly lead to discomfort for travelers. The air clings to your skin, making even short walks feel more strenuous, while reaching for a refreshing drink becomes essential to stay hydrated.

December Average Humidity in St. Georges Basin

This chart illustrates the average monthly humidity levels in St. Georges Basin, 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 St. Georges Basin is approximately 71%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%75%73%73%72%70%69%68%64%61%64%71%
Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in St. Georges Basin

In St. Georges Basin 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 St. Georges Basin, you can check here.

Maximum UV Index Levels in St. Georges Basin for December

The chart shows the monthly maximum UV Index (UVI) for St. Georges Basin 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 St. Georges Basin typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec151312853458101214
Data source: St. Georges Basin 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 St. Georges Basin Compares to Other Months

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

This table compares monthly weather conditions in St. Georges Basin, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather22°C (72°F)64 mm (2.5 inches)70%extreme
February Weather21°C (69°F)132 mm (5.2 inches)74%extreme
March Weather19°C (67°F)155 mm (6.1 inches)73%extreme
April Weather17°C (63°F)43 mm (1.7 inches)73%very high
May Weather13°C (56°F)58 mm (2.3 inches)72%moderate
June Weather11°C (52°F)52 mm (2.1 inches)70%moderate
July Weather11°C (52°F)49 mm (1.9 inches)69%moderate
August Weather11°C (52°F)64 mm (2.5 inches)68%moderate
September Weather14°C (57°F)44 mm (1.7 inches)64%very high
October Weather16°C (61°F)82 mm (3.2 inches)61%very high
November Weather18°C (64°F)110 mm (4.3 inches)64%extreme
December Weather20°C (68°F)89 mm (3.5 inches)71%extreme

Compare St. Georges Basin's Climate with Cities Worldwide