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
With the onset of December, Radyr's average high-temperature clocks in at a frosty 8.6°C (47.5°F), showing a minor fluctuation from the previous month. In December, Radyr temperatures settle at a low of 5.2°C (41.4°F) during the nights, reflecting a minor change from daytime highs.Humidity
The months with the highest humidity in Radyr are November and December, with an average relative humidity of 86%.Rainfall
In Radyr, during December, the rain falls for 12.5 days and regularly aggregates up to 27mm (1.06") of precipitation. Throughout the year, there are 132.6 rainfall days, and 252mm (9.92") of precipitation is accumulated.Snowfall
January, February, November and December are months with snowfall. In Radyr, United Kingdom, in December, during 0.7 snowfall days, 1mm (0.04") of snow is typically accumulated. Throughout the year, in Radyr, there are 3.1 snowfall days, and 8mm (0.31") of snow is accumulated.Daylight
The month with the shortest days in Radyr is December, 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 4:07 pm. On the last day of December, in Radyr, sunrise is at 8:18 am and sunset at 4:13 pm GMT.
Sunshine
In Radyr, the average sunshine in December is 4.1h.UV index
The months with the lowest UV index are January through March, November and December, with an average maximum UV index of 2. A UV Index of 2, and less, symbolizes a low threat to health from unprotected exposure to Sun's UV rays for the average person.Note: A maximum UV index of 2 in December translates into the following recommendations:
Extended time in the sun generally does not harm most, but those with sensitive skin, infants, and children should always be protected. The best time to avoid the Sun's harmful UV radiation is during midday when it's most potent. Experience reduced UV exposure by about half when donning a wide-brim hat. Be alert! Nearly double the UV rays from the Sun can be reflected by snow.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the usual temperature for Radyr in December?
What are the most humid months in Radyr?
What is the average humidity in December in Radyr?
How many days does it rain in December in Radyr?
How much does it snow in Radyr in December?
What is the month with the shortest days in Radyr?
What is the average length of the day in December in Radyr?
What time are sunrise and sunset in December in Radyr?
How long on average sun shines in December in Radyr?
What is the month with the lowest UV index in Radyr?
How high is the UV index in December in Radyr?
Average temperature in December
Radyr, United Kingdom
- Average high temperature in December: 8.6°C
The warmest month (with the highest average high temperature) is July (19°C).
The month with the lowest average high temperature is January (7.5°C).
- Average low temperature in December: 5.2°C
The month with the highest average low temperature is August (13.3°C).
The coldest month (with the lowest average low temperature) is February (3.9°C).
Average pressure in December
Radyr, United Kingdom
- Average pressure in December: 1014mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1010mbar).
Average wind speed in December
Radyr, United Kingdom
- Average wind speed in December: 22km/h
The windiest month (with the highest average wind speed) is February (22.3km/h).
The calmest months (with the lowest average wind speed) are June and July (15.2km/h).
Average humidity in December
Radyr, United Kingdom
- Average humidity in December: 86%
The months with the highest relative humidity are November and December (86%).
The months with the lowest relative humidity are April and May (81%).
Average rainfall in December
Radyr, United Kingdom
- Average rainfall in December: 27mm
The wettest months (with the highest rainfall) are August and November (31mm).
The driest month (with the least rainfall) is April (12mm).
Average rainfall days in December
Radyr, United Kingdom
- Average rainfall days in December: 12.5 days
The month with the highest number of rainy days is November (13.5 days).
The months with the least rainy days are February and April (9.1 days).
Average snowfall in December
Radyr, United Kingdom
- Average snowfall in December: 1mm
The month with the highest snowfall is February (5mm).
The months with the least snowfall are March, April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Radyr, United Kingdom
- Average snowfall days in December: 0.7 days
The month with the highest number of snowfall days is February (1 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
Radyr, 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 1min
The month with the most sunshine is May (Average sunshine: 8h and 12min).
The month with the least sunshine is November (Average sunshine: 3h and 54min).
Average sunshine days in December
Radyr, United Kingdom
- Average sunshine days in December: 14.5 days
The month with the most sunshine days is April (19.2 days).
The month with the least sunshine days is November (13.7 days).
Average UV index in December
Radyr, 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
Radyr, United Kingdom
- Average cloud cover in December: 59
The month with the most cloud cover is November (Cloud cover 61).
The months with the least cloud cover are April and May (Cloud cover 46).
Average visibility in December
Radyr, United Kingdom
- Average visibility in December: 10km
The months with the highest visibility are February, March and December (10km).
The months with the lowest visibility are January, April, May, June, July, August, September, October and November (9km).
