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
December
Weather in December
Temperature
The transition from November to December sees average high-temperatures adjusting to a still frosty 7.8°C (46°F), from a not significantly different 9.7°C (49.5°F). Llanharan sees a minor drop to an average minimum temperature of 4.4°C (39.9°F) during the night in the month of December.Humidity
The months with the highest humidity are November and December, with an average relative humidity of 88%.Rainfall
In Llanharan, in December, during 15 rainfall days, 33mm (1.3") of precipitation is typically accumulated. In Llanharan, during the entire year, the rain falls for 150.3 days and collects up to 270mm (10.63") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Llanharan, in December, snow falls for 0.8 days, with typically accumulated 2mm (0.08") of snow. Throughout the year, in Llanharan, there are 6.2 snowfall days, and 15mm (0.59") of snow is accumulated.Daylight
December has the shortest days of the year in Llanharan, United Kingdom, with an average of 7h and 54min of daylight.On the first day of December in Llanharan, sunrise is at 7:57 am and sunset at 4:08 pm. On the last day of the month, sunrise is at 8:19 am and sunset at 4:14 pm GMT.
Sunshine
In December, the average sunshine is 3.8h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index. A UV Index reading of 2, and below, represents a minimal health vulnerability from unsafe exposure to UV radiation for ordinary individuals.Note: In December, the UV index of 2 transforms into the following advice:
Though extended exposure to the sun typically does not concern most people, it is crucial to always shield children, infants, and those with sensitive skin. Direct exposure to the Sun during its peak hours around mid-day should be minimized for safety. Sunglasses providing both UVA and UVB protection are non-negotiable on sunlit days. Pay attention! The reflection of snow can enhance the Sun's UV radiation almost double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Llanharan?
What are the most humid months in Llanharan?
What is the average humidity in December in Llanharan?
How much does it rain in Llanharan in December?
How much does it snow in Llanharan in December?
What is the month with the shortest days in Llanharan?
How many hours of daylight does Llanharan have in December?
When is the sunrise / sunset in December in Llanharan?
How many hours of sunshine does Llanharan have in December?
What is the month with the lowest UV index in Llanharan?
What is the UV index intensity in December in Llanharan?
Average temperature in December
Llanharan, United Kingdom
- Average high temperature in December: 7.8°C
The warmest month (with the highest average high temperature) is July (18.8°C).
The month with the lowest average high temperature is January (7°C).
- Average low temperature in December: 4.4°C
The month with the highest average low temperature is August (12.2°C).
The coldest month (with the lowest average low temperature) is January (3.1°C).
Average pressure in December
Llanharan, United Kingdom
- Average pressure in December: 1013.8mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.9mbar).
Average wind speed in December
Llanharan, United Kingdom
- Average wind speed in December: 21km/h
The windiest month (with the highest average wind speed) is February (21.3km/h).
The calmest month (with the lowest average wind speed) is June (14.4km/h).
Average humidity in December
Llanharan, United Kingdom
- Average humidity in December: 88%
The months with the highest relative humidity are November and December (88%).
The months with the lowest relative humidity are April and May (82%).
Average rainfall in December
Llanharan, United Kingdom
- Average rainfall in December: 33mm
The wettest month (with the highest rainfall) is November (35mm).
The driest month (with the least rainfall) is May (11mm).
Average rainfall days in December
Llanharan, United Kingdom
- Average rainfall days in December: 15 days
The month with the highest number of rainy days is November (15.4 days).
The month with the least rainy days is April (9.5 days).
Average snowfall in December
Llanharan, United Kingdom
- Average snowfall in December: 2mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Llanharan, United Kingdom
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is January (2.3 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
Llanharan, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 36min).
The month with the shortest days is December (Average daylight: 7h and 54min).
- Average sunshine in December: 3h and 5min
The month with the most sunshine is May (Average sunshine: 7h and 54min).
The month with the least sunshine is November (Average sunshine: 3h and 42min).
Average sunshine days in December
Llanharan, United Kingdom
- Average sunshine days in December: 11.8 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is November (10.7 days).
Average UV index in December
Llanharan, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June, July, August and September (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
Llanharan, United Kingdom
- Average cloud cover in December: 62
The month with the most cloud cover is November (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 49).
Average visibility in December
Llanharan, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
The months with the lowest visibility are January, February, March, April, May, June, July, August, September, October, November and December (9km).
