December weather forecast
Mount Gambier, Australia

As the year wraps up, December introduces the early onset of summer in Mount Gambier. The UV index takes a final leap for the year to 11 units, a cue to stay hydrated and carry sun protection. In comparison to November, the increase in temperatures along with longer hours of daylight boosts outdoor activities. Despite an increase in daylight, there is a slight rise in the number of rainy days, balancing the hot weather with occasional showers.

Temperature

Mount Gambier's weather in December indicates an average high-temperature of a still pleasant 22.9°C (73.2°F), nearly consistent with the 20.5°C (68.9°F) of November. Mount Gambier observes a dramatic plunge from daytime highs in December, settling at an average low-temperature of 10°C (50°F).

Rainfall

In Mount Gambier, Australia, during December, the rain falls for 11.7 days and regularly aggregates up to 38mm (1.5") of precipitation. Throughout the year, there are 183.7 rainfall days, and 712mm (28.03") of precipitation is accumulated.

Daylight

December has the longest days of the year in Mount Gambier, Australia, with an average of 14h and 42min of daylight.
On the first day of December, sunrise is at 5:38 am and sunset at 8:13 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:32 pm ACDT.

Sunshine

In December, the average sunshine is 8.1h.

UV index

In December, the average daily maximum UV index is 11. A UV Index value of 11, and more, symbolizes an extreme health hazard from unprotected exposure to Sun's UV rays for ordinary individuals.
Note: In December, the average maximum UV index of 11 translates into the following recommendations:
Practice all essential precautions. Protection against sun damage is crucial. The time between 10 a.m. and 4 p.m. is when UV radiation is at its peak. Limit exposure to direct sunlight during these hours. Prioritize a wide-brim hat for comprehensive sun defense for your face, neck, eyes, and ears.