Weather in January
January in Alderney, Guernsey, sees notably reduced hours of daylight, plunging depths of winter. On average, a fairly brief stint of sunlight graces Alderney, as daylight hovers around 8.7 hours per day. Sea temperatures record a cooling trend from the preceding month, offering chilly waters for the brave. January's weather is characterised by its cold, dark days, making for the quintessential winter period in Alderney. Moving into February, conditions marginally improve but the winter strength continues to dominate.
Note: Swimming in 10.1°C (50.2°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.
On the first day of January in Alderney, sunrise is at 08:05 and sunset at 16:18. On the last day of the month, sunrise is at 07:43 and sunset at 17:01 GMT.
Sea temperature
In January, the average sea temperature is 10.1°C (50.2°F).Note: Swimming in 10.1°C (50.2°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.
Daylight
In January, the average length of the day in Alderney, Guernsey, is 8h and 41min.On the first day of January in Alderney, sunrise is at 08:05 and sunset at 16:18. On the last day of the month, sunrise is at 07:43 and sunset at 17:01 GMT.
Frequently asked questions
What is the sea water temperature in January in Alderney?
In Alderney, Guernsey, the average seawater temperature in January is 10.1°C (50.2°F). Swimming in 10.1°C (50.2°F) is considered dangerous. Unprotected immersion in temperatures below 10°C (50°F) causes quickly maximum intensity cold shock with hyperventilation.
What is the average length of the day in January in Alderney?
The average day length in January in Alderney, Guernsey, is 8h and 41min.
When are sunrise and sunset in January in Alderney?
On the first day of January in Alderney, Guernsey, sunrise is at 08:05 and sunset at 16:18. On the last day of the month, sunrise is at 07:43 and sunset at 17:01 GMT.
Average sea temperature in January
Alderney, Guernsey
- Average sea temperature in January: 10.1°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 January
Alderney, Guernsey
- Average daylight in January: 8h and 4min
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
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