Weather in December
December, the first month of the winter in Londonderry, is also a frosty month, with an average temperature ranging between min 2.5°C (36.5°F) and max 8°C (46.4°F).
Note: Entering waters of 10.8°C (51.4°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
On the first day of December, sunrise is at 8:30 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 8:53 am and sunset at 4:10 pm GMT.
Note: The daily high UV index of 0 during December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
[Resources]Temperature
Londonderry sees its lowest temperatures during January and December, with an average high-temperature of 8°C (46.4°F).Rainfall
In December, the rain falls for 15 days. Throughout December, 88mm (3.46") of precipitation is accumulated. Throughout the year, in Londonderry, there are 170 rainfall days, and 853mm (33.58") of precipitation is accumulated.Sea temperature
In December, the average sea temperature is 10.8°C (51.4°F).Note: Entering waters of 10.8°C (51.4°F) is life-endangering. A mere moment in 13°C (55.4°F) waters feels piercing cold, and below 10°C (50°F) it can lead to immediate cold shock and cessation of breathing control, depending on body resilience.
Daylight
The month with the shortest days is December, with an average of 7h and 18min of daylight.On the first day of December, sunrise is at 8:30 am and sunset at 4:05 pm. On the last day of the month, sunrise is at 8:53 am and sunset at 4:10 pm GMT.
Sunshine
The month with the least sunshine is December, with an average of 1.2h of sunshine.UV index
The months with the lowest UV index in Londonderry, United Kingdom, are January and December, with an average maximum UV index of 0. A UV Index estimate of 2, and below, represents a minimal health hazard from exposure to the Sun's UV rays for ordinary individuals.Note: The daily high UV index of 0 during December translates into the following recommendations:
Prolonged sun exposure should always be prevented in babies, children, and those with sensitive skin. Midday is when the Sun's radiation is strongest; avoid prolonged exposure during this time. For a sun-safe wardrobe, go for clothes that are tightly woven and generously sized.
Frequently asked questions
What is the coldest time of year in Londonderry?
January and December are identified as the coldest months in Londonderry, with an average high-temperature of 8°C (46.4°F).
What is the temperature in December in Londonderry?
In Londonderry, 8°C (46.4°F) is the average high-temperature and 2.5°C (36.5°F) is the average low-temperature during December.
How many days does it rain in December in Londonderry?
In Londonderry, United Kingdom, in December, during 15 rainfall days, 88mm (3.46") of precipitation is typically accumulated.
What is the water temperature in December in Londonderry?
In Londonderry, the average seawater temperature in December is 10.8°C (51.4°F). Swimming in 10.8°C (51.4°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 Londonderry?
December has the shortest days of the year in Londonderry, with an average of 7h and 18min of daylight.
How many hours of daylight does Londonderry have in December?
The average day length in December is 7h and 17min.
When are sunrise and sunset in December in Londonderry?
In December, on the first day of the month, sunrise is at 8:30 am and sunset at 4:05 pm. On the last day of the month, in Londonderry, United Kingdom, sunrise is at 8:53 am and sunset at 4:10 pm GMT.
What is the month with the least sunshine in Londonderry?
With an average of 1.2h of sunshine, December has the least sunshine of the year.
How many hours of sunshine does Londonderry have in December?
The average sunshine duration in December in Londonderry is 1.2h.
What is the month with the lowest UV index in Londonderry?
The months with the lowest UV index in Londonderry, United Kingdom, are January and December, with an average maximum UV index of 0.
How high is the UV index in December in Londonderry?
The average daily maximum UV index in December in Londonderry is 0. A UV Index of 2, and less, symbolizes a low health threat from unprotected exposure to UV radiation.
Average temperature in December
Londonderry, United Kingdom
- Average high temperature in December: 8°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The months with the lowest average high temperature are January and December (8°C).
- Average low temperature in December: 2.5°C
The month with the highest average low temperature is July (11.6°C).
The coldest month (with the lowest average low temperature) is February (2.1°C).
Average rainfall in December
Londonderry, United Kingdom
- Average rainfall in December: 88.4mm
The wettest month (with the highest rainfall) is October (89mm).
The driest month (with the least rainfall) is May (51.2mm).
Average rainfall days in December
Londonderry, United Kingdom
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is November (19 days).
The month with the least rainy days is June (11 days).
Average sea temperature in December
Londonderry, United Kingdom
- Average sea temperature in December: 10.8°C
The best month for swimming (with the highest average sea temperature) is August (14.7°C).
The coldest month (with the lowest average sea temperature) is March (8.7°C).
Average daylight in December /
Average sunshine in December
Londonderry, United Kingdom
- Average daylight in December: 7h and 2min
The month with the longest days is June (Average daylight: 17h and 18min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in December: 1h and 1min
The month with the most sunshine is May (Average sunshine: 6h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).
Average UV index in December
Londonderry, United Kingdom
- Average UV index in December: 0
The months with the highest UV index are June and July (UV index 6).
The months with the lowest UV index are January and December (UV index 0).
Londonderry, United Kingdom
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