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 arrival of December records an average high-temperature of a still chilly 6.5°C (43.7°F), closely related to the 8.5°C (47.3°F) observed in November. In Llanwrtyd, December nights experience a modest descent in temperature from daily peaks, cooling down to an average of 2.4°C (36.3°F).Humidity
January, November and December, with an average relative humidity of 92%, are the most humid months.Rainfall
In Llanwrtyd, during December, the rain falls for 12.2 days and regularly aggregates up to 28mm (1.1") of precipitation. Throughout the year, there are 147.5 rainfall days, and 288mm (11.34") of precipitation is accumulated.Snowfall
Months with snowfall are January through April, November and December. In Llanwrtyd, during December, snow falls for 2.1 days and regularly aggregates up to 14mm (0.55") of snow. Throughout the year, in Llanwrtyd, there are 15.7 snowfall days, and 84mm (3.31") of snow is accumulated.Daylight
With an average of 7h and 48min of daylight, December has the shortest days of the year.On the first day of December in Llanwrtyd, sunrise is at 8:01 am and sunset at 4:06 pm. On the last day of the month, sunrise is at 8:23 am and sunset at 4:12 pm GMT.
Sunshine
In December, the average sunshine is 3.1h.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 estimate of 2, and below, represents a low health risk from exposure to the Sun's UV rays for the ordinary person.Note: The daily high UV index of 2 during December translates into the following recommendations:
Most individuals can handle sun exposure for up to an hour without burning, but children must always be shielded from sun exposure. The Sun is most powerful around mid-day, so it's a good practice to reduce direct exposure. Stay sun-safe with clothing that is both closely woven and worn loosely. Be mindful! The reflection from snow can increase the Sun's UV radiation nearly twice.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Is it cold in Llanwrtyd during December?
What is the most humid month in Llanwrtyd?
What is the average humidity in December in Llanwrtyd?
How much does it rain in Llanwrtyd in December?
How many days does it snow in December in Llanwrtyd?
What is the month with the shortest days in Llanwrtyd?
What is the average length of the day in December in Llanwrtyd?
When is the sunrise / sunset in December in Llanwrtyd?
How many hours of sunshine does Llanwrtyd have in December?
What is the month with the lowest UV index in Llanwrtyd?
What is the UV index reading in December in Llanwrtyd?
Average temperature in December
Llanwrtyd, United Kingdom
- Average high temperature in December: 6.5°C
The warmest month (with the highest average high temperature) is July (17.6°C).
The month with the lowest average high temperature is January (5.5°C).
- Average low temperature in December: 2.4°C
The month with the highest average low temperature is August (10.3°C).
The coldest month (with the lowest average low temperature) is January (1.1°C).
Average pressure in December
Llanwrtyd, United Kingdom
- Average pressure in December: 1013.3mbar
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
Llanwrtyd, United Kingdom
- Average wind speed in December: 18.5km/h
The windiest month (with the highest average wind speed) is February (19km/h).
The calmest months (with the lowest average wind speed) are June and July (12.9km/h).
Average humidity in December
Llanwrtyd, 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
Llanwrtyd, United Kingdom
- Average rainfall in December: 28mm
The wettest month (with the highest rainfall) is June (37mm).
The driest month (with the least rainfall) is September (13mm).
Average rainfall days in December
Llanwrtyd, United Kingdom
- Average rainfall days in December: 12.2 days
The month with the highest number of rainy days is July (15.4 days).
The months with the least rainy days are February and September (9.4 days).
Average snowfall in December
Llanwrtyd, United Kingdom
- Average snowfall in December: 14mm
The month with the highest snowfall is November (21mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Llanwrtyd, United Kingdom
- Average snowfall days in December: 2.1 days
The month with the highest number of snowfall days is February (4.8 days).
The months with the least snowfall days are June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Llanwrtyd, 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 18min).
The month with the least sunshine is November (Average sunshine: 2h and 54min).
Average sunshine days in December
Llanwrtyd, United Kingdom
- Average sunshine days in December: 15.7 days
The months with the most sunshine days are March and September (16.2 days).
The month with the least sunshine days is July (10.1 days).
Average UV index in December
Llanwrtyd, 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
Llanwrtyd, United Kingdom
- Average cloud cover in December: 71
The month with the most cloud cover is November (Cloud cover 73).
The month with the least cloud cover is April (Cloud cover 59).
Average visibility in December
Llanwrtyd, United Kingdom
- Average visibility in December: 8km
The months with the highest visibility are January, February, March, April, May, June, July, October, November and December (8km).
The months with the lowest visibility are August and September (7km).
