December
Weather in December
Sea temperature
In Saint Leonards, United Kingdom, the average seawater temperature in December is 11.6°C (52.9°F).Note: You can swim in 11.6°C (52.9°F) below 10°C (50°F) with proper thermal wear; failing that, the cold shock and respiratory challenges are nearly certain. A short span at 13°C (55.4°F) without it is tough.
Daylight
With an average of 8h and 0min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 7:38 am and sunset at 3:55 pm. On the last day of December, in Saint Leonards, sunrise is at 8:00 am and sunset at 4:01 pm GMT.
Updated: Feb 8, 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
How cold is the water in December in Saint Leonards?
In Saint Leonards, United Kingdom, the average seawater temperature in December is 11.6°C (52.9°F). Swimming in 11.6°C (52.9°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
What is the month with the shortest days in Saint Leonards?
With an average of 8h and 0min of daylight, December has the shortest days of the year.
What is the average length of the day in December in Saint Leonards?
In Saint Leonards, the average day length in December is 8h and 2min.
What time are sunrise and sunset in December in Saint Leonards?
On the first day of December in Saint Leonards, United Kingdom, sunrise is at 7:38 am and sunset at 3:55 pm. On the last day of the month, sunrise is at 8:00 am and sunset at 4:01 pm GMT.
Average sea temperature in December
Saint Leonards, United Kingdom
- Average sea temperature in December: 11.6°C
The best month for swimming (with the highest average sea temperature) is September (17.5°C).
The coldest month (with the lowest average sea temperature) is March (8°C).
Average daylight in December
Saint Leonards, United Kingdom
- Average daylight in December: 8h and 0min
The month with the longest days is June (Average daylight: 16h and 24min).
The month with the shortest days is December (Average daylight: 8h and 0min).
