December weather forecastCronulla, Australia
December
Weather in December
Sea temperature
In Cronulla, Australia, in December, the average water temperature is 21.6°C (70.9°F).Note: In 21.6°C (70.9°F), swimming is not an enjoyable activity for most. As the temperature decreases from 21°C (69.8°F) to 15°C (59°F), it becomes harder to control breathing.
Daylight
December has the longest days of the year, with an average of 14h and 24min of daylight.On the first day of December, sunrise is at 5:36 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:10 pm AEDT.
Updated: Jan 26, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
In Cronulla, the average seawater temperature in December is 21.6°C (70.9°F). For swimming, a surface water temperature of 21.6°C (70.9°F) is not enjoyable for the majority. It is not considered safe, as controlling breathing becomes progressively more difficult as water temperature decreases below 21°C (69.8°F).
The month with the longest days is December, with an average of 14h and 24min of daylight.
In December, the average day length is 14h and 23min.
On the first day of December in Cronulla, Australia, sunrise is at 5:36 am and sunset at 7:51 pm. On the last day of the month, sunrise is at 5:46 am and sunset at 8:10 pm AEDT.
Average sea temperature in December
Cronulla, Australia
- Average sea temperature in December: 21.6°C
The best month for swimming (with the highest average sea temperature) is February (23.8°C).
The coldest month (with the lowest average sea temperature) is September (18.4°C).
Average daylight in December
Cronulla, Australia
- Average daylight in December: 14h and 24min
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).
