December
Weather in December
Sea temperature
In Port Denison, Australia, the average seawater temperature in December is 21.7°C (71.1°F).Note: Most people find swimming in 21.7°C (71.1°F) unenjoyable. As the water temperature falls from 21°C (69.8°F) to 15°C (59°F), controlling one's breathing becomes harder.
Daylight
December has the longest days of the year, with an average of 14h and 0min of daylight.On the first day of December in Port Denison, sunrise is at 5:13 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 7:23 pm AWST.
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
What is the sea water temperature in December in Port Denison?
In Port Denison, in December, the average water temperature is 21.7°C (71.1°F). For swimming, a surface water temperature of 21.7°C (71.1°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).
When are the longest days in Port Denison?
The month with the longest days in Port Denison, Australia, is December, with an average of 14h and 0min of daylight.
How many hours of daylight does Port Denison have in December?
In December, the average day length in Port Denison, Australia, is 13h and 59min.
When is the sunrise / sunset in December in Port Denison?
On the first day of December in Port Denison, sunrise is at 5:13 am and sunset at 7:05 pm. On the last day of the month, sunrise is at 5:23 am and sunset at 7:23 pm AWST.
Average sea temperature in December
Port Denison, Australia
- Average sea temperature in December: 21.7°C
The best month for swimming (with the highest average sea temperature) is March (24.3°C).
The coldest month (with the lowest average sea temperature) is October (19.7°C).
Average daylight in December
Port Denison, Australia
- Average daylight in December: 14h and 0min
The month with the longest days is December (Average daylight: 14h and 0min).
The month with the shortest days is June (Average daylight: 10h and 18min).
