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 advent of December denotes an average high-temperature of a chilly 7.7°C (45.9°F), subtly different from November's 10.2°C (50.4°F). In Slough, nights during December observe an average temperature decrease to a wintry 3.1°C (37.6°F).Humidity
The most humid month is December, with an average relative humidity of 89%.Rainfall
In Slough, United Kingdom, during December, the rain falls for 12 days and regularly aggregates up to 27mm (1.06") of precipitation. In Slough, United Kingdom, during the entire year, the rain falls for 149.7 days and collects up to 270mm (10.63") of precipitation.Snowfall
Months with snowfall are January through March and December. December is the first month it typically snows in Slough. Throughout December, in the average 1.1 snowfall days, it receives 4mm (0.16") of snow. Throughout the year, there are 6 snowfall days, and 27mm (1.06") of snow is accumulated.Daylight
The month with the shortest days in Slough, United Kingdom, is December, with an average of 7h and 54min of daylight.On the first day of the month, sunrise is at 7:46 am and sunset at 3:56 pm. On the last day of December, in Slough, sunrise is at 8:07 am and sunset at 4:03 pm GMT.
Sunshine
In December, the average sunshine in Slough is 4.3h.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 reading of 2, and below, represents a low health risk from unsafe exposure to UV radiation for average individuals.Note: A typical high UV index of 2 in December suggests 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. To avoid the Sun's strongest rays, limit exposure around the mid-day period. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Take heed! Reflection from the snow can almost amplify the Sun's UV radiation by double.
Frequently asked questions
What are December temperatures in Slough?
What is the most humid month in Slough?
What is the average humidity in December in Slough?
How many days does it rain in December in Slough?
When does it start to snow in Slough?
What is the month with the shortest days in Slough?
What is the average length of the day in December in Slough?
What time are sunrise and sunset in December in Slough?
How long on average sun shines in December in Slough?
What is the month with the lowest UV index in Slough?
What is the UV index reading in December in Slough?
Average temperature in December
Slough, United Kingdom
- Average high temperature in December: 7.7°C
The warmest month (with the highest average high temperature) is July (21.5°C).
The month with the lowest average high temperature is January (6.6°C).
- Average low temperature in December: 3.1°C
The month with the highest average low temperature is August (13.2°C).
The coldest month (with the lowest average low temperature) is January (1.8°C).
Average pressure in December
Slough, United Kingdom
- Average pressure in December: 1014.4mbar
The month with the highest atmospheric pressure is September (1016.9mbar).
The month with the lowest atmospheric pressure is November (1010.4mbar).
Average wind speed in December
Slough, United Kingdom
- Average wind speed in December: 17.5km/h
The windiest month (with the highest average wind speed) is February (17.7km/h).
The calmest months (with the lowest average wind speed) are July and September (12.8km/h).
Average humidity in December
Slough, United Kingdom
- Average humidity in December: 89%
The month with the highest relative humidity is December (89%).
The months with the lowest relative humidity are July and August (76%).
Average rainfall in December
Slough, United Kingdom
- Average rainfall in December: 27mm
The wettest month (with the highest rainfall) is June (34mm).
The driest month (with the least rainfall) is April (16mm).
Average rainfall days in December
Slough, United Kingdom
- Average rainfall days in December: 12 days
The month with the highest number of rainy days is July (16.2 days).
The month with the least rainy days is September (9.9 days).
Average snowfall in December
Slough, United Kingdom
- Average snowfall in December: 4mm
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
Slough, United Kingdom
- Average snowfall days in December: 1.1 days
The month with the highest number of snowfall days is February (2.3 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
Slough, 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 2min
The month with the most sunshine is July (Average sunshine: 7h and 54min).
The month with the least sunshine is February (Average sunshine: 3h and 42min).
Average sunshine days in December
Slough, United Kingdom
- Average sunshine days in December: 15.5 days
The month with the most sunshine days is September (16.9 days).
The month with the least sunshine days is July (10.9 days).
Average UV index in December
Slough, United Kingdom
- Average UV index in December: 2
The month with the highest UV index is 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
Slough, United Kingdom
- Average cloud cover in December: 58
The month with the most cloud cover is November (Cloud cover 61).
The month with the least cloud cover is April (Cloud cover 49).
Average visibility in December
Slough, United Kingdom
- Average visibility in December: 9km
The months with the highest visibility are January, February, March, April, May, June, July, August, September, October and December (9km).
The month with the lowest visibility is November (8km).
Slough, United Kingdom
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