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
Weather in December
Temperature
The beginning of December records an average high-temperature of a chilly 8.3°C (46.9°F), marking a negligible difference from November's 10.3°C (50.5°F). Ystalyfera maintains an average low-temperature of 5.2°C (41.4°F) throughout December's nights.Humidity
The months with the highest humidity in Ystalyfera are January and December, with an average relative humidity of 87%.Rainfall
The months with the most rainfall are November and December, with an average 66mm (2.6") of precipitation.Snowfall
January through March and December are months with snowfall in Ystalyfera, United Kingdom. December is the first month it typically snows in Ystalyfera. Throughout December, in the average 1.1 snowfall days, it receives 9mm (0.35") of snow. Throughout the year, in Ystalyfera, there are 5.4 snowfall days, and 28mm (1.1") of snow is accumulated.Daylight
With an average of 7h and 54min of daylight, December has the shortest days of the year in Ystalyfera.On the first day of the month, sunrise is at 8:00 am and sunset at 4:08 pm. On the last day of December, in Ystalyfera, sunrise is at 8:21 am and sunset at 4:14 pm GMT.
Sunshine
In December, the average sunshine is 3.8h.UV index
The months with the lowest UV index in Ystalyfera 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 rays for ordinary individuals.Note: The maximum daily UV index of 2 in December interprets 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. Given the potency of the midday Sun's UV radiation, one should avoid prolonged exposure. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
Frequently asked questions
What are the temperatures in Ystalyfera in December?
What is the most humid month in Ystalyfera?
What is the average humidity in December in Ystalyfera?
What is the rainiest month in Ystalyfera?
How many days does it rain in December in Ystalyfera?
When does it start snowing in Ystalyfera?
What is the month with the shortest days in Ystalyfera?
How many hours of daylight does Ystalyfera have in December?
When is the sunrise / sunset in December in Ystalyfera?
How long on average sun shines in December in Ystalyfera?
What is the month with the lowest UV index in Ystalyfera?
How high is the UV index in December in Ystalyfera?
Average temperature in December
Ystalyfera, United Kingdom
- Average high temperature in December: 8.3°C
The warmest month (with the highest average high temperature) is July (18.2°C).
The months with the lowest average high temperature are January and February (7.3°C).
- Average low temperature in December: 5.2°C
The month with the highest average low temperature is August (12.9°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in December
Ystalyfera, United Kingdom
- Average pressure in December: 1013.7mbar
The months with the highest atmospheric pressure are May and September (1016.7mbar).
The month with the lowest atmospheric pressure is November (1009.8mbar).
Average wind speed in December
Ystalyfera, United Kingdom
- Average wind speed in December: 22.4km/h
The windiest month (with the highest average wind speed) is December (22.4km/h).
The calmest month (with the lowest average wind speed) is June (14.9km/h).
Average humidity in December
Ystalyfera, United Kingdom
- Average humidity in December: 87%
The months with the highest relative humidity are January and December (87%).
The month with the lowest relative humidity is April (81%).
Average rainfall in December
Ystalyfera, United Kingdom
- Average rainfall in December: 66mm
The wettest months (with the highest rainfall) are November and December (66mm).
The driest month (with the least rainfall) is May (31mm).
Average rainfall days in December
Ystalyfera, United Kingdom
- Average rainfall days in December: 16.9 days
The month with the highest number of rainy days is November (17 days).
The month with the least rainy days is September (12.6 days).
Average snowfall in December
Ystalyfera, United Kingdom
- Average snowfall in December: 9mm
The month with the highest snowfall is January (12mm).
The months with the least snowfall are April, May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Ystalyfera, United Kingdom
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is January (2 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).
Average daylight in December /
Average sunshine in December
Ystalyfera, 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 6min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Ystalyfera, United Kingdom
- Average sunshine days in December: 11.1 days
The month with the most sunshine days is September (14.4 days).
The month with the least sunshine days is July (10.3 days).
Average UV index in December
Ystalyfera, 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
Ystalyfera, United Kingdom
- Average cloud cover in December: 63
The month with the most cloud cover is December (Cloud cover 63).
The months with the least cloud cover are April and May (Cloud cover 47).
Average visibility in December
Ystalyfera, 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).
Ystalyfera, United Kingdom
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