Weather in December
December brings the onset of winter in Alderney, noticeable through the significant drop in daylight hours. Alderney receives the least amount of daylight for the year in this month, playing host to just 8.2 hours. The frigid sea temperature further confirms winter’s arrival, falling to a brisk 12°C (53.6°F). December presents a stark contrast to the earlier sunny months, ending the year with the coolest temperatures and shortest days.
Note: Diving into 12°C (53.6°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.
On the first day of the month, sunrise is at 07:44 and sunset at 16:11. On the last day of December, in Alderney, sunrise is at 08:05 and sunset at 16:18 GMT.
[Resources]Sea temperature
In Alderney, the average seawater temperature in December is 12°C (53.6°F).Note: Diving into 12°C (53.6°F) when it's under 10°C (50°F) can cause immediate cold shock symptoms, marked by hyperventilation.
Daylight
The month with the shortest days is December, with an average of 8h and 12min of daylight.On the first day of the month, sunrise is at 07:44 and sunset at 16:11. On the last day of December, in Alderney, sunrise is at 08:05 and sunset at 16:18 GMT.
Frequently asked questions
What is the sea water temperature in December in Alderney?
In December, the average sea temperature in Alderney is 12°C (53.6°F). Swimming in 12°C (53.6°F) is considered life-threatening. Even a few minutes in 13°C (55.4°F) water is uncomfortable, and swimming below 10°C (50°F) may cause total loss of breathing control and cold shock, depending on a person's physique.
What is the month with the shortest days in Alderney?
The month with the shortest days in Alderney is December, with an average of 8h and 12min of daylight.
How many hours of daylight does Alderney have in December?
In December, the average day length in Alderney is 8h and 13min.
What time are sunrise and sunset in December in Alderney?
In December, on the first day of the month, sunrise is at 07:44 and sunset at 16:11. On the last day of the month, in Alderney, sunrise is at 08:05 and sunset at 16:18 GMT.
Average sea temperature in December
Alderney, Guernsey
- Average sea temperature in December: 12°C
The best month for swimming (with the highest average sea temperature) is September (17.4°C).
The coldest month (with the lowest average sea temperature) is March (9.3°C).
Average daylight in December
Alderney, Guernsey
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 12min).
The month with the shortest days is December (Average daylight: 8h and 12min).
Alderney, Guernsey
Weather forecast for your location
1. Click Locate me button
2. Allow the app to use your location
2. Allow the app to use your location
