Weather in December
Temperature
The arrival of December denotes a barely perceptible change in the average high-temperatures to a moderately hot 25°C (77°F) from November's 22.9°C (73.2°F). December generally records an average low-temperature of 16.5°C (61.7°F).Humidity
In December, the average relative humidity is 64%.Rainfall
In Wollongong, in December, it is raining for 13 days, with typically 95mm (3.74") of accumulated precipitation. In Wollongong, during the entire year, the rain falls for 137.3 days and collects up to 1320mm (51.97") of precipitation.Sea temperature
In Wollongong, Australia, in December, the average water temperature is 21.4°C (70.5°F).Note: For the majority, swimming in 21.4°C (70.5°F) does not offer a pleasant experience. Below 21°C (69.8°F), the difficulty in controlling breathing escalates.
Daylight
With an average of 14h and 24min of daylight, December has the longest days of the year.On the first day of December in Wollongong, sunrise is at 5:37 am and sunset at 7:53 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:12 pm AEDT.
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Frequently asked questions
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Average temperature in December
Wollongong, Australia
- Average high temperature in December: 25°C
The warmest months (with the highest average high temperature) are January and February (25.6°C).
The month with the lowest average high temperature is July (17°C).
- Average low temperature in December: 16.5°C
The month with the highest average low temperature is February (18.2°C).
The coldest month (with the lowest average low temperature) is July (8.3°C).
Average humidity in December
Wollongong, Australia
- Average humidity in December: 64%
The month with the highest relative humidity is February (69%).
The month with the lowest relative humidity is August (52%).
Average rainfall in December
Wollongong, Australia
- Average rainfall in December: 94.6mm
The wettest month (with the highest rainfall) is March (160.4mm).
The driest month (with the least rainfall) is July (63.4mm).
Average rainfall days in December
Wollongong, Australia
- Average rainfall days in December: 13 days
The month with the highest number of rainy days is March (14.5 days).
The month with the least rainy days is August (7.8 days).
Average sea temperature in December
Wollongong, Australia
- Average sea temperature in December: 21.4°C
The best month for swimming (with the highest average sea temperature) is February (23.7°C).
The coldest month (with the lowest average sea temperature) is September (18.4°C).
Average daylight in December
Wollongong, Australia
- Average daylight in December: 14h and 2min
The month with the longest days is December (Average daylight: 14h and 24min).
The month with the shortest days is June (Average daylight: 9h and 54min).
Wollongong, Australia
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