December Weather in Port Denison, Australia

Last updated: August 22, 2025

In Port Denison, Australia, the average temperature in December hovers around 25°C (77°F). While you can expect a delightful warmth, temperatures can vary significantly, dipping to a cool 11°C (52°F) and soaring up to a scorching 45°C (112°F). Be prepared for occasional moisture, as the area receives about 6 mm (0.2 in) of precipitation over approximately 1 day during the month, with an average humidity level of 73%.

December Temperature in Port Denison

In December in Port Denison, the average temperature is 25°C (77°F), with maximums reaching 45°C (112°F) and minimums as low as 11°C (52°F). This diverse temperature range makes it essential for travelers to pack accordingly to enjoy their stay comfortably.

December Weather in Port Denison: Daily Temperature Highs, Lows, and Averages

The chart illustrates December temperature patterns in Port Denison, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Port Denison, December typically has an average temperature of 25°C (77°F), with highs reaching up to 45°C (112°F) and lows dropping to around 11°C (52°F).

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

December Precipitation in Port Denison

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

December Precipitation Trends in Port Denison

The chart displays monthly precipitation patterns in Port Denison, 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 Port Denison, 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 Port Denison

In Port Denison in December humidity is 73%. With an average temperature of 25°C (77°F), this humidity feels like a warm blanket wrapping around you, making travel a bit sticky but also vibrant and lively, as the air carries the rich scents of the surrounding environment.

December Average Humidity in Port Denison

This chart illustrates the average monthly humidity levels in Port Denison, 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 Port Denison is approximately 73%, 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 Port Denison

In Port Denison 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 Port Denison, you can check here.

Maximum UV Index Levels in Port Denison for December

The chart shows the monthly maximum UV Index (UVI) for Port Denison 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 Port Denison typically reaches 14, which falls under the extreme exposure category.

Data source: Port Denison 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 Port Denison Compares to Other Months

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

This table compares monthly weather conditions in Port Denison, showing how December’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	18 mm (0.7 inches)	73%	extreme
February Weather	26°C (79°F)	34 mm (1.3 inches)	74%	extreme
March Weather	25°C (78°F)	7 mm (0.3 inches)	73%	extreme
April Weather	22°C (72°F)	12 mm (0.5 inches)	75%	very high
May Weather	18°C (65°F)	24 mm (0.9 inches)	69%	high
June Weather	16°C (60°F)	52 mm (2.0 inches)	70%	moderate
July Weather	15°C (59°F)	52 mm (2.1 inches)	66%	moderate
August Weather	15°C (59°F)	50 mm (2.0 inches)	66%	high
September Weather	16°C (62°F)	14 mm (0.5 inches)	67%	very high
October Weather	19°C (66°F)	18 mm (0.7 inches)	70%	extreme
November Weather	22°C (71°F)	13 mm (0.5 inches)	72%	extreme
December Weather	25°C (77°F)	6 mm (0.2 inches)	73%	extreme