December
Weather in December
Sea temperature
In Gymea Bay, Australia, in December, the average water temperature is 21.6°C (70.9°F).Note: Swimming in 21.6°C (70.9°F) is not pleasurable for most people. Breathing control grows increasingly challenging as the water temperature falls under 21°C (69.8°F).
Daylight
December has the longest days of the year, with an average of 14h and 24min of daylight.On the first day of the month, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of December, in Gymea Bay, Australia, sunrise is at 5:47 am and sunset at 8:10 pm AEDT.
Updated: Jan 27, 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 Gymea Bay?
In Gymea Bay, the average seawater temperature in December is 21.6°C (70.9°F). For most, swimming in 21.6°C (70.9°F) is not an enjoyable activity. Furthermore, controlling your breathing becomes progressively more difficult as the water temperature decreases from 21°C (69.8°F) to 15°C (59°F).
When are the longest days in Gymea Bay?
The month with the longest days is December, with an average of 14h and 24min of daylight.
What is the average length of the day in December in Gymea Bay?
The average day length in December is 14h and 23min.
What time are sunrise and sunset in December in Gymea Bay?
On the first day of December in Gymea Bay, sunrise is at 5:37 am and sunset at 7:52 pm. On the last day of the month, sunrise is at 5:47 am and sunset at 8:10 pm AEDT.
Average sea temperature in December
Gymea Bay, 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
Gymea Bay, 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).
