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
December's arrival registers an average high-temperature of a frosty 8.5°C (47.3°F), closely aligning with the temperature of the previous month. December nights in Llanharry document an average temperature reading of 5.3°C (41.5°F).Humidity
December is the most humid month, with an average relative humidity of 86%.Rainfall
In Llanharry, in December, during 18 rainfall days, 75mm (2.95") of precipitation is typically accumulated. Throughout the year, in Llanharry, there are 197.2 rainfall days, and 669mm (26.34") of precipitation is accumulated.Snowfall
January through March and December are months with snowfall in Llanharry, United Kingdom. The month with the most snowfall is December, when snow falls for 0.8 days and typically aggregates up to 9mm (0.35") of snow.Daylight
December has the shortest days of the year in Llanharry, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 7:57 am and sunset at 4:08 pm. On the last day of December, in Llanharry, sunrise is at 8:19 am and sunset at 4:14 pm GMT.
Sunshine
The average sunshine in December in Llanharry is 3.8h.UV index
The months with the lowest UV index in Llanharry are January, February, November and December, with an average maximum UV index of 2. A UV Index value of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The UV index of 2 during December leads to these advisories:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Avoiding direct sun during mid-day hours can prevent harmful UV radiation exposure. Counter UV radiation's ill effects with clothing designed for sun safety and UV-resistant eyewear. Caution! The reflection of snow can nearly double the intensity of the Sun's UV radiation.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Llanharry?
What is the most humid month in Llanharry?
What is the average humidity in December in Llanharry?
How many days does it rain in December in Llanharry?
What is the snowiest month in Llanharry?
When does it start snowing in Llanharry?
What is the month with the shortest days in Llanharry?
What is the average length of the day in December in Llanharry?
When is the sunrise / sunset in December in Llanharry?
How many hours of sunshine does Llanharry have in December?
When is the lowest UV index in Llanharry?
How high is the UV index in December in Llanharry?
Average temperature in December
Llanharry, United Kingdom
- Average high temperature in December: 8.5°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 (7.5°C).
- Average low temperature in December: 5.3°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is February (4°C).
Average pressure in December
Llanharry, United Kingdom
- Average pressure in December: 1013.9mbar
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
Llanharry, United Kingdom
- Average wind speed in December: 23.1km/h
The windiest month (with the highest average wind speed) is December (23.1km/h).
The calmest month (with the lowest average wind speed) is June (15.5km/h).
Average humidity in December
Llanharry, United Kingdom
- Average humidity in December: 86%
The month with the highest relative humidity is December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in December
Llanharry, United Kingdom
- Average rainfall in December: 75mm
The wettest month (with the highest rainfall) is November (79mm).
The driest month (with the least rainfall) is April (32mm).
Average rainfall days in December
Llanharry, United Kingdom
- Average rainfall days in December: 18 days
The month with the highest number of rainy days is November (19.1 days).
The month with the least rainy days is February (13.9 days).
Average snowfall in December
Llanharry, United Kingdom
- Average snowfall in December: 9mm
The month with the highest snowfall is December (9mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Llanharry, United Kingdom
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is February (1.3 days).
The months with the least snowfall days are April, May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Llanharry, 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: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 36min).
Average sunshine days in December
Llanharry, United Kingdom
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is May (13.5 days).
The month with the least sunshine days is November (9 days).
Average UV index in December
Llanharry, 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, November and December (UV index 2).
Average cloud cover in December
Llanharry, United Kingdom
- Average cloud cover in December: 63
The month with the most cloud cover is November (Cloud cover 64).
The month with the least cloud cover is April (Cloud cover 48).
Average visibility in December
Llanharry, 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).
