Contents
- Weather in December
- Frequently asked questions
- Average temperature in December
- Average pressure in December
- Average wind speed in December
- Average humidity in December
- Average rainfall in December
- Average rainfall days in December
- Average snowfall in December
- Average snowfall days in December
- Average daylight in December
- Average sunshine in December
- Average sunshine days in December
- Average UV index in December
- Average cloud cover in December
- Average visibility in December
Weather in December
Temperature
The onset of December marks an average high-temperature of a still frosty 6.5°C (43.7°F), hardly differing from November's 8.4°C (47.1°F). Sion Mills welcomes an average low temperature of 2.4°C (36.3°F) in December, a gentle shift from the day's high.Humidity
The months with the highest humidity are January, November and December, with an average relative humidity of 90%.Rainfall
In Sion Mills, in December, it is raining for 16.6 days, with typically 29mm (1.14") of accumulated precipitation. Throughout the year, in Sion Mills, there are 178.9 rainfall days, and 322mm (12.68") of precipitation is accumulated.Snowfall
January through April, November and December are months with snowfall. In Sion Mills, United Kingdom, during December, snow falls for 0.9 days and regularly aggregates up to 4mm (0.16") of snow. In Sion Mills, United Kingdom, during the entire year, snow falls for 8.8 days and aggregates up to 66mm (2.6") of snow.Daylight
December has the shortest days of the year in Sion Mills, United Kingdom, with an average of 7h and 18min of daylight.On the first day of the month, sunrise is at 8:30 am and sunset at 4:07 pm. On the last day of December, in Sion Mills, sunrise is at 8:53 am and sunset at 4:12 pm GMT.
Sunshine
The average sunshine in December is 3.6h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health vulnerability from unprotected exposure to Sun's UV rays for average individuals.Note: An average UV index of 2 in December transforms into this advice:
Children must always have sun protection, unlike most people, who can tolerate up to an hour in the sun without any burns. The Sun's most harmful UV rays are emitted around midday; avoid staying outdoors for long during this time. Wearing a wide-brim hat can block approximately 50% of UV radiation, protecting the eyes. Be aware! The intensity of the Sun's UV radiation can be amplified nearly twice due to snow reflection.
Frequently asked questions
How cold is it in Sion Mills in December?
What is the most humid month in Sion Mills?
What is the average humidity in December in Sion Mills?
How much does it rain in Sion Mills in December?
How many days does it snow in December in Sion Mills?
What is the month with the shortest days in Sion Mills?
How many hours of daylight does Sion Mills have in December?
When are sunrise and sunset in December in Sion Mills?
How long on average sun shines in December in Sion Mills?
When is the lowest UV index in Sion Mills?
What is the UV index reading in December in Sion Mills?
Average temperature in December
Sion Mills, United Kingdom
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is July (16.8°C).
The month with the lowest average high temperature is January (6.2°C).
- Average low temperature in December: 2.4°C
The month with the highest average low temperature is July (9.9°C).
The coldest month (with the lowest average low temperature) is January (1.7°C).
Average pressure in December
Sion Mills, United Kingdom
- Average pressure in December: 1008.5mbar
The month with the highest atmospheric pressure is May (1015.2mbar).
The month with the lowest atmospheric pressure is November (1006.7mbar).
Average wind speed in December
Sion Mills, United Kingdom
- Average wind speed in December: 17.2km/h
The windiest month (with the highest average wind speed) is January (18.2km/h).
The calmest month (with the lowest average wind speed) is July (11.8km/h).
Average humidity in December
Sion Mills, United Kingdom
- Average humidity in December: 90%
The months with the highest relative humidity are January, November and December (90%).
The month with the lowest relative humidity is April (84%).
Average rainfall in December
Sion Mills, United Kingdom
- Average rainfall in December: 29mm
The wettest month (with the highest rainfall) is August (36mm).
The driest month (with the least rainfall) is September (16mm).
Average rainfall days in December
Sion Mills, United Kingdom
- Average rainfall days in December: 16.6 days
The month with the highest number of rainy days is July (18.8 days).
The month with the least rainy days is February (12.1 days).
Average snowfall in December
Sion Mills, United Kingdom
- Average snowfall in December: 4mm
The month with the highest snowfall is February (29mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Sion Mills, United Kingdom
- Average snowfall days in December: 0.9 days
The month with the highest number of snowfall days is February (2.5 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Sion Mills, United Kingdom
- Average daylight in December: 7h and 2min
The month with the longest days is June (Average daylight: 17h and 12min).
The month with the shortest days is December (Average daylight: 7h and 18min).
- Average sunshine in December: 3h and 4min
The month with the most sunshine is June (Average sunshine: 6h and 24min).
The month with the least sunshine is January (Average sunshine: 3h and 18min).
Average sunshine days in December
Sion Mills, United Kingdom
- Average sunshine days in December: 10.2 days
The month with the most sunshine days is October (13.1 days).
The month with the least sunshine days is July (7.2 days).
Average UV index in December
Sion Mills, United Kingdom
- Average UV index in December: 2
The month with the highest UV index is June (UV index 4).
The months with the lowest UV index are January, February, March, November and December (UV index 2).
Average cloud cover in December
Sion Mills, United Kingdom
- Average cloud cover in December: 67
The month with the most cloud cover is August (Cloud cover 73).
The month with the least cloud cover is April (Cloud cover 60).
Average visibility in December
Sion Mills, United Kingdom
- Average visibility in December: 8km
The months with the highest visibility are February, March and April (9km).
The months with the lowest visibility are July and August (7km).
Sion Mills, United Kingdom
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