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
December's average high-temperature is a frosty 8.4°C (47.1°F), maintaining a close comparison with November's 10°C (50°F). Silian sees a minor drop to an average minimum temperature of 5.3°C (41.5°F) during the night in the month of December.Humidity
The months with the highest humidity are January, August, September and December, with an average relative humidity of 86%.Rainfall
The months with the most rainfall are November and December, with an average 92mm (3.62") of precipitation.Snowfall
Months with snowfall in Silian are January through April and December. The months with the most snowfall in Silian, United Kingdom, are January and December, with an average 9mm (0.35") of accumulated snow.Daylight
December has the shortest days of the year, with an average of 7h and 48min of daylight.On the first day of December, sunrise is at 8:03 am and sunset at 4:07 pm. On the last day of the month, sunrise is at 8:25 am and sunset at 4:14 pm GMT.
Sunshine
In Silian, the average sunshine in December is 3.8h.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 low threat to health from unsafe exposure to UV radiation for the average person.Note: In December, a regular UV index of 2 translates into these guidelines:
While most people are not greatly affected by extended sun exposure, those with fair skin, babies, and children must always have protection. Avoiding direct sunlight during midday hours helps reduce the risk from intense UV radiation. Sun-protective clothing, a long-sleeved shirt and pants, a wide-brimmed hat, and UVA and UVB-blocking sunglasses are particularly helpful in blocking UV radiation's harmful effects. Warning! The reflection from snow can nearly magnify the Sun's UV radiation twofold.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the average December temperature in Silian?
What is the most humid month in Silian?
What is the average humidity in December in Silian?
What is the rainiest month in Silian?
How much does it rain in Silian in December?
When does it snow the most in Silian?
When does it start to snow in Silian?
What is the month with the shortest days in Silian?
What is the average length of the day in December in Silian?
What time are sunrise and sunset in December in Silian?
How long on average sun shines in December in Silian?
When is the lowest UV index in Silian?
What is the UV index reading in December in Silian?
Average temperature in December
Silian, United Kingdom
- Average high temperature in December: 8.4°C
The warmest month (with the highest average high temperature) is July (17.3°C).
The months with the lowest average high temperature are January and February (7.3°C).
- Average low temperature in December: 5.3°C
The month with the highest average low temperature is August (12.6°C).
The coldest month (with the lowest average low temperature) is February (3.8°C).
Average pressure in December
Silian, United Kingdom
- Average pressure in December: 1013mbar
The month with the highest atmospheric pressure is May (1016.5mbar).
The month with the lowest atmospheric pressure is November (1009.4mbar).
Average wind speed in December
Silian, United Kingdom
- Average wind speed in December: 23.8km/h
The windiest month (with the highest average wind speed) is December (23.8km/h).
The calmest month (with the lowest average wind speed) is June (14.8km/h).
Average humidity in December
Silian, United Kingdom
- Average humidity in December: 86%
The months with the highest relative humidity are January, August, September and December (86%).
The month with the lowest relative humidity is April (82%).
Average rainfall in December
Silian, United Kingdom
- Average rainfall in December: 92mm
The wettest months (with the highest rainfall) are November and December (92mm).
The driest month (with the least rainfall) is May (37mm).
Average rainfall days in December
Silian, United Kingdom
- Average rainfall days in December: 21.7 days
The months with the highest number of rainy days are November and December (21.7 days).
The month with the least rainy days is April (15.8 days).
Average snowfall in December
Silian, United Kingdom
- Average snowfall in December: 9mm
The months with the highest snowfall are January and December (9mm).
The months with the least snowfall are May, June, July, August, September, October and November (0mm).
Average snowfall days in December
Silian, United Kingdom
- Average snowfall days in December: 1.3 days
The month with the highest number of snowfall days is January (1.7 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
Silian, 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 5min
The month with the most sunshine is May (Average sunshine: 8h and 0min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Silian, United Kingdom
- Average sunshine days in December: 5.7 days
The month with the most sunshine days is May (12.9 days).
The month with the least sunshine days is December (5.7 days).
Average UV index in December
Silian, 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
Silian, United Kingdom
- Average cloud cover in December: 64
The month with the most cloud cover is December (Cloud cover 64).
The months with the least cloud cover are April and May (Cloud cover 48).
Average visibility in December
Silian, 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).
Silian, United Kingdom
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