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 advent of December observes an average high-temperature of a frosty 7.8°C (46°F), nearly identical to November's 10.4°C (50.7°F). The December average low temperature in Upper Holloway, marginally lower than the daytime high, records at a cold 3.5°C (38.3°F).Humidity
December is the most humid month in Upper Holloway, United Kingdom, with an average relative humidity of 88%.Rainfall
In Upper Holloway, during December, the rain falls for 11.1 days and regularly aggregates up to 37mm (1.46") of precipitation. In Upper Holloway, United Kingdom, during the entire year, the rain falls for 151.7 days and collects up to 370mm (14.57") of precipitation.Snowfall
January through April, November and December are months with snowfall. In Upper Holloway, in December, snow falls for 1.2 days, with typically accumulated 9mm (0.35") of snow. Throughout the year, in Upper Holloway, there are 7.7 snowfall days, and 50mm (1.97") of snow is accumulated.Daylight
December has the shortest days of the year, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 7:44 am and sunset at 3:54 pm. On the last day of December, in Upper Holloway, sunrise is at 8:06 am and sunset at 4:01 pm GMT.
Sunshine
The average sunshine in December in Upper Holloway is 4.2h.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 estimate of 2, and below, represents a minimal health vulnerability from unprotected exposure to Sun's UV rays for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
For the majority, extended sun exposure is not of great concern. Infants and people with sensitive skin must always be protected. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Limit sun-induced ocular harm with sunglasses that feature UVA and UVB filtration. Be prepared! The intensity of the Sun's UV radiation can be amplified nearly double due to snow reflection.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in December in Upper Holloway?
What is the most humid month in Upper Holloway?
What is the average humidity in December in Upper Holloway?
How much does it rain in Upper Holloway in December?
How much does it snow in Upper Holloway in December?
What is the month with the shortest days in Upper Holloway?
What is the average length of the day in December in Upper Holloway?
When are sunrise and sunset in December in Upper Holloway?
How long on average sun shines in December in Upper Holloway?
When is the lowest UV index in Upper Holloway?
What is the UV index reading in December in Upper Holloway?
Average temperature in December
Upper Holloway, United Kingdom
- Average high temperature in December: 7.8°C
The warmest month (with the highest average high temperature) is July (22.3°C).
The month with the lowest average high temperature is January (6.8°C).
- Average low temperature in December: 3.5°C
The month with the highest average low temperature is August (13.8°C).
The coldest month (with the lowest average low temperature) is January (2.2°C).
Average pressure in December
Upper Holloway, United Kingdom
- Average pressure in December: 1014.5mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.6mbar).
Average wind speed in December
Upper Holloway, United Kingdom
- Average wind speed in December: 17km/h
The windiest month (with the highest average wind speed) is February (17.3km/h).
The calmest month (with the lowest average wind speed) is September (12.6km/h).
Average humidity in December
Upper Holloway, United Kingdom
- Average humidity in December: 88%
The month with the highest relative humidity is December (88%).
The month with the lowest relative humidity is August (72%).
Average rainfall in December
Upper Holloway, United Kingdom
- Average rainfall in December: 37mm
The wettest month (with the highest rainfall) is June (45mm).
The driest month (with the least rainfall) is April (22mm).
Average rainfall days in December
Upper Holloway, United Kingdom
- Average rainfall days in December: 11.1 days
The month with the highest number of rainy days is July (16.5 days).
The month with the least rainy days is September (9.8 days).
Average snowfall in December
Upper Holloway, United Kingdom
- Average snowfall in December: 9mm
The month with the highest snowfall is February (16mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in December
Upper Holloway, United Kingdom
- Average snowfall days in December: 1.2 days
The month with the highest number of snowfall days is February (2.5 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
Upper Holloway, 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 August (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 36min).
Average sunshine days in December
Upper Holloway, United Kingdom
- Average sunshine days in December: 17.5 days
The month with the most sunshine days is September (18.1 days).
The month with the least sunshine days is June (12.2 days).
Average UV index in December
Upper Holloway, United Kingdom
- Average UV index in December: 2
The months with the highest UV index are June and July (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Upper Holloway, United Kingdom
- Average cloud cover in December: 58
The month with the most cloud cover is February (Cloud cover 61).
The month with the least cloud cover is September (Cloud cover 49).
Average visibility in December
Upper Holloway, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, October and December (9km).
The months with the lowest visibility are September and November (8km).
