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
Entering December, Llanwrthwl's average high-temperature reads a still chilly 6.4°C (43.5°F), indicating a close resemblance to the previous month's climate. An average low-temperature of 2.2°C (36°F) is witnessed throughout the month of December in Llanwrthwl, United Kingdom, a mere drop from the daytime peak.Humidity
The months with the highest humidity are January, November and December, with an average relative humidity of 92%.Rainfall
In Llanwrthwl, in December, it is raining for 17.4 days, with typically 51mm (2.01") of accumulated precipitation. Throughout the year, in Llanwrthwl, United Kingdom, there are 192.1 rainfall days, and 471mm (18.54") of precipitation is accumulated.Snowfall
Months with snowfall in Llanwrthwl, United Kingdom, are January through May, November and December. In Llanwrthwl, United Kingdom, in December, during 2.7 snowfall days, 17mm (0.67") of snow is typically accumulated. Throughout the year, there are 17.1 snowfall days, and 120mm (4.72") of snow is accumulated.Daylight
December has the shortest days of the year in Llanwrthwl, with an average of 7h and 48min of daylight.On the first day of December in Llanwrthwl, sunrise is at 8:01 am and sunset at 4:04 pm. On the last day of the month, sunrise is at 8:23 am and sunset at 4:11 pm GMT.
Sunshine
In December, the average sunshine is 3.2h.UV index
January through March, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Llanwrthwl, United Kingdom. A UV Index of 2, and less, symbolizes a minimal health hazard from unsafe exposure to UV radiation for the average person.Note: The maximum UV index of 2 during December leads to these instructions:
The majority are not significantly affected by prolonged sun exposure. Infants, children, and those with fair skin must always have protection. The solar radiation around mid-day is intense; avoid the Sun and stay safe. Sunglasses that guard against UVA and UVB rays are pivotal in minimizing sun-induced ocular damage. Watch out! The Sun's UV radiation can be nearly magnified twofold due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
How cold does it get in Llanwrthwl in December?
What are the most humid months in Llanwrthwl?
What is the average humidity in December in Llanwrthwl?
How much does it rain in Llanwrthwl in December?
How much does it snow in Llanwrthwl in December?
What is the month with the shortest days in Llanwrthwl?
What is the average length of the day in December in Llanwrthwl?
When is the sunrise / sunset in December in Llanwrthwl?
How long on average sun shines in December in Llanwrthwl?
When is the lowest UV index in Llanwrthwl?
What is the UV index intensity in December in Llanwrthwl?
Average temperature in December
Llanwrthwl, United Kingdom
- Average high temperature in December: 6.4°C
The warmest month (with the highest average high temperature) is July (17.7°C).
The month with the lowest average high temperature is January (5.3°C).
- Average low temperature in December: 2.2°C
The month with the highest average low temperature is August (10.3°C).
The coldest months (with the lowest average low temperature) are January and February (0.9°C).
Average pressure in December
Llanwrthwl, United Kingdom
- Average pressure in December: 1013.2mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.6mbar).
Average wind speed in December
Llanwrthwl, United Kingdom
- Average wind speed in December: 18.6km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest month (with the lowest average wind speed) is June (12.7km/h).
Average humidity in December
Llanwrthwl, United Kingdom
- Average humidity in December: 92%
The months with the highest relative humidity are January, November and December (92%).
The months with the lowest relative humidity are April and May (85%).
Average rainfall in December
Llanwrthwl, United Kingdom
- Average rainfall in December: 51mm
The wettest month (with the highest rainfall) is November (52mm).
The driest month (with the least rainfall) is September (27mm).
Average rainfall days in December
Llanwrthwl, United Kingdom
- Average rainfall days in December: 17.4 days
The months with the highest number of rainy days are July and November (18.7 days).
The months with the least rainy days are February and September (13.7 days).
Average snowfall in December
Llanwrthwl, United Kingdom
- Average snowfall in December: 17mm
The month with the highest snowfall is February (30mm).
The months with the least snowfall are June, July, August, September and October (0mm).
Average snowfall days in December
Llanwrthwl, United Kingdom
- Average snowfall days in December: 2.7 days
The month with the highest number of snowfall days is February (5 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Llanwrthwl, United Kingdom
- Average daylight in December: 7h and 5min
The month with the longest days is June (Average daylight: 16h and 42min).
The month with the shortest days is December (Average daylight: 7h and 48min).
- Average sunshine in December: 3h and 1min
The month with the most sunshine is May (Average sunshine: 6h and 24min).
The month with the least sunshine is November (Average sunshine: 2h and 54min).
Average sunshine days in December
Llanwrthwl, United Kingdom
- Average sunshine days in December: 9.5 days
The month with the most sunshine days is April (12.5 days).
The month with the least sunshine days is November (7.2 days).
Average UV index in December
Llanwrthwl, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are May, June, July and August (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
Llanwrthwl, United Kingdom
- Average cloud cover in December: 69
The month with the most cloud cover is November (Cloud cover 73).
The months with the least cloud cover are April and May (Cloud cover 60).
Average visibility in December
Llanwrthwl, United Kingdom
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July and December (8km).
The months with the lowest visibility are August, September, October and November (7km).
