December weather forecastCastro, Italy
December
Weather in December
Sea temperature
In December, the average sea temperature in Castro, Italy, is 16.1°C (61°F).Note: Swimming in water with a temperature of 16.1°C (61°F) is not a pleasurable experience for the majority. As the temperature falls below 21°C (69.8°F), it becomes increasingly hard to control one's breathing.
Daylight
The month with the shortest days is December, with an average of 9h and 24min of daylight.On the first day of December in Castro, sunrise is at 06:49 and sunset at 16:21. On the last day of the month, sunrise is at 07:07 and sunset at 16:31 CET.
Updated: Jan 29, 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 December, the average sea temperature is 16.1°C (61°F). Swimming in 16.1°C (61°F) is not enjoyable for the majority. Controlling breathing becomes progressively more difficult as surface water temperature decreases below 21°C (69.8°F).
December has the shortest days of the year in Castro, Italy, with an average of 9h and 24min of daylight.
In December, the average day length in Castro, Italy, is 9h and 23min.
In December, on the first day of the month, sunrise is at 06:49 and sunset at 16:21. On the last day of the month, in Castro, sunrise is at 07:07 and sunset at 16:31 CET.
Average sea temperature in December
Castro, Italy
- Average sea temperature in December: 16.1°C
The best month for swimming (with the highest average sea temperature) is August (25.8°C).
The coldest months (with the lowest average sea temperature) are January and February (14.3°C).
Average daylight in December
Castro, Italy
- Average daylight in December: 9h and 24min
The month with the longest days is June (Average daylight: 15h and 0min).
The month with the shortest days is December (Average daylight: 9h and 24min).





