December Weather in Melbourne, United States

Last updated: June 24, 2025

In Melbourne, United States, the average temperature in December hovers around 7°C (44°F), with a minimum dipping to -11°C (13°F) and a maximum reaching 26°C (79°F). Expect approximately 90 mm (3.5 in) of precipitation over 8 days, accompanied by a high average humidity of 88%. Be prepared for a variety of weather conditions during your visit!

December Temperature in Melbourne

In December in Melbourne, the average temperature is 7°C (44°F). Maximum temperatures can reach 26°C (79°F), while the minimum can drop as low as -11°C (13°F). Therefore, it's advisable to pack layers to prepare for a wide range of weather conditions while traveling.

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

The chart illustrates December temperature patterns in Melbourne, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Melbourne, December typically has an average temperature of 7°C (44°F), with highs reaching up to 26°C (79°F) and lows dropping to around -11°C (13°F).

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

December Precipitation in Melbourne

In Melbourne in December, the precipitation amount is 90 mm (3.5 in) spread over 8 days, indicating a relatively wet period for the region.

December Precipitation Trends in Melbourne

The chart displays monthly precipitation patterns in Melbourne, 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 Melbourne, December typically receives around 90 mm (3.5 inches) of precipitation spread over approximately 8 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 Melbourne

In Melbourne in December, humidity is 88%. With an average temperature of 7°C (44°F), this humidity feels like an unwelcoming chill that clings to your skin, making outdoor exploration uncomfortable and prompting frequent breaks in sheltered areas.

December Average Humidity in Melbourne

This chart illustrates the average monthly humidity levels in Melbourne, 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 Melbourne is approximately 88%, 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 Melbourne

In Melbourne in December, the maximum UV index is 3, which corresponds to a moderate Exposure Category. The time to burn is approximately 30 minutes. For more details on the hourly UV index in Melbourne, you can check the information here.

Maximum UV Index Levels in Melbourne for December

The chart shows the monthly maximum UV Index (UVI) for Melbourne 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 Melbourne typically reaches 3, which falls under the moderate exposure category.

Data source: Melbourne 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 Melbourne Compares to Other Months

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

This table compares monthly weather conditions in Melbourne, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	4°C (39°F)	75 mm (2.9 inches)	84%	moderate
February Weather	5°C (42°F)	118 mm (4.6 inches)	83%	high
March Weather	11°C (52°F)	138 mm (5.4 inches)	81%	very high
April Weather	15°C (58°F)	148 mm (5.8 inches)	81%	very high
May Weather	20°C (69°F)	165 mm (6.5 inches)	83%	very high
June Weather	25°C (77°F)	91 mm (3.6 inches)	83%	extreme
July Weather	27°C (81°F)	82 mm (3.2 inches)	81%	extreme
August Weather	26°C (79°F)	111 mm (4.4 inches)	74%	very high
September Weather	24°C (75°F)	80 mm (3.2 inches)	71%	very high
October Weather	16°C (62°F)	104 mm (4.1 inches)	76%	high
November Weather	9°C (49°F)	80 mm (3.1 inches)	84%	moderate
December Weather	7°C (44°F)	90 mm (3.5 inches)	88%	moderate