December Weather in Leinster, Australia

Last updated: August 22, 2025

In December, the average temperature in Leinster, Australia reaches a warm 29°C (85°F). Expect variations with a minimum of 15°C (59°F) and occasional highs soaring to 44°C (111°F). The region experiences a modest precipitation of 6 mm (0.2 in) spread over just 1 day, while the average humidity remains low at 27%, making it a generally dry and comfortable time of year.

December Temperature in Leinster

In December in Leinster, the average temperature is 29°C (85°F), with maximums reaching 44°C (111°F) and minimums dropping as low as 15°C (59°F). Be prepared for a wide range of temperatures when traveling during this time.

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

The chart illustrates December temperature patterns in Leinster, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Leinster, December typically has an average temperature of 29°C (85°F), with highs reaching up to 44°C (111°F) and lows dropping to around 15°C (59°F).

Data source: Temperature data for Leinster generated using information from the Copernicus Climate Change Service.

December Precipitation in Leinster

In Leinster in December, the precipitation amount is 6 mm (0.2 in) over the course of 1 day.

December Precipitation Trends in Leinster

The chart displays monthly precipitation patterns in Leinster, 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 Leinster, December typically receives around 6 mm (0.2 inches) of precipitation spread over approximately 1 days.

Data source: Precipitation data for December generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

December Humidity in Leinster

In Leinster in December, humidity is 27%. With an average temperature of 29°C (85°F), this humidity feels like a warm embrace, making travel enjoyable yet slightly sticky, prompting you to stay hydrated and perhaps seek shade during the hottest parts of the day.

December Average Humidity in Leinster

This chart illustrates the average monthly humidity levels in Leinster, 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 Leinster is approximately 27%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for December generated using information from the Copernicus Climate Change Service.

December UV Index in Leinster

In Leinster in December, the maximum UV index is 16, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, making it crucial to take protective measures. For detailed information, you can refer to the Hourly UV Index in Leinster.

Maximum UV Index Levels in Leinster for December

The chart shows the monthly maximum UV Index (UVI) for Leinster 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 Leinster typically reaches 16, which falls under the extreme exposure category.

Data source: Leinster 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 Leinster Compares to Other Months

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

This table compares monthly weather conditions in Leinster, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	30°C (87°F)	21 mm (0.8 inches)	30%	extreme
February Weather	28°C (83°F)	45 mm (1.8 inches)	40%	extreme
March Weather	27°C (81°F)	41 mm (1.6 inches)	49%	extreme
April Weather	23°C (73°F)	13 mm (0.5 inches)	57%	extreme
May Weather	17°C (62°F)	12 mm (0.5 inches)	68%	high
June Weather	13°C (56°F)	11 mm (0.4 inches)	73%	moderate
July Weather	13°C (56°F)	7 mm (0.3 inches)	67%	high
August Weather	15°C (59°F)	12 mm (0.5 inches)	50%	very high
September Weather	19°C (66°F)	2 mm (0.1 inches)	37%	very high
October Weather	23°C (73°F)	9 mm (0.4 inches)	27%	extreme
November Weather	26°C (80°F)	16 mm (0.6 inches)	26%	extreme
December Weather	29°C (85°F)	6 mm (0.2 inches)	27%	extreme