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 commencement of December records an average high-temperature of a frosty 8.4°C (47.1°F), barely varying from November's 10.4°C (50.7°F). During December's nights, Llanwern notes a minor temperature decline, reaching an average of 4.8°C (40.6°F).Humidity
January, November and December, with an average relative humidity of 86%, are the most humid months in Llanwern.Rainfall
In Llanwern, during December, the rain falls for 16.8 days and regularly aggregates up to 56mm (2.2") of precipitation. Throughout the year, there are 184.4 rainfall days, and 507mm (19.96") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Llanwern, in December, during 0.8 snowfall days, 3mm (0.12") of snow is typically accumulated. Throughout the year, in Llanwern, there are 4.7 snowfall days, and 17mm (0.67") of snow is accumulated.Daylight
The month with the shortest days in Llanwern is December, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 7:56 am and sunset at 4:05 pm. On the last day of December, in Llanwern, sunrise is at 8:17 am and sunset at 4:12 pm GMT.
Sunshine
In Llanwern, United Kingdom, the average sunshine in December is 4.3h.UV index
The months with the lowest UV index are January, February, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a minimal health hazard from exposure to the Sun's UV radiation for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
Despite most people tolerating extended sun exposure, it is critical to always protect those with sensitive skin, infants, and children. It's crucial to reduce time in the direct Sun around mid-day due to the intense solar radiation. By wearing a generously brimmed hat, you can cut UV radiation exposure significantly. Heed this! Snow reflection can almost augment the UV radiation of the sun by double.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Llanwern?
What is the most humid month in Llanwern?
What is the average humidity in December in Llanwern?
How many days does it rain in December in Llanwern?
How much does it snow in Llanwern in December?
What is the month with the shortest days in Llanwern?
What is the average length of the day in December in Llanwern?
When are sunrise and sunset in December in Llanwern?
How long on average sun shines in December in Llanwern?
What are the months with the lowest UV index in Llanwern?
How high is the UV index in December in Llanwern?
Average temperature in December
Llanwern, United Kingdom
- Average high temperature in December: 8.4°C
The warmest month (with the highest average high temperature) is July (18.9°C).
The month with the lowest average high temperature is January (7.3°C).
- Average low temperature in December: 4.8°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 (3.6°C).
Average pressure in December
Llanwern, United Kingdom
- Average pressure in December: 1014mbar
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
Llanwern, United Kingdom
- Average wind speed in December: 21.5km/h
The windiest month (with the highest average wind speed) is February (22km/h).
The calmest months (with the lowest average wind speed) are June and July (14.9km/h).
Average humidity in December
Llanwern, United Kingdom
- Average humidity in December: 86%
The months with the highest relative humidity are January, November and December (86%).
The months with the lowest relative humidity are March, April and May (82%).
Average rainfall in December
Llanwern, United Kingdom
- Average rainfall in December: 56mm
The wettest month (with the highest rainfall) is November (64mm).
The driest month (with the least rainfall) is April (27mm).
Average rainfall days in December
Llanwern, United Kingdom
- Average rainfall days in December: 16.8 days
The month with the highest number of rainy days is November (18.8 days).
The month with the least rainy days is April (12.7 days).
Average snowfall in December
Llanwern, United Kingdom
- Average snowfall in December: 3mm
The month with the highest snowfall is January (6mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Llanwern, United Kingdom
- Average snowfall days in December: 0.8 days
The month with the highest number of snowfall days is January (1.6 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
Llanwern, 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: 4h and 2min
The month with the most sunshine is July (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 4h and 0min).
Average sunshine days in December
Llanwern, United Kingdom
- Average sunshine days in December: 9.6 days
The month with the most sunshine days is April (14.7 days).
The month with the least sunshine days is November (8 days).
Average UV index in December
Llanwern, 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
Llanwern, United Kingdom
- Average cloud cover in December: 58
The month with the most cloud cover is November (Cloud cover 60).
The months with the least cloud cover are April and May (Cloud cover 47).
Average visibility in December
Llanwern, 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).
