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
As December arrives, Slaný's weather displays a minor decrease in high-temperatures, transitioning from November's chilly 7.6°C (45.7°F) to an icy 3.1°C (37.6°F). Throughout the nights in December, Slaný notes an average low of -1.4°C (29.5°F), a small dip from the daytime peak.Humidity
In Slaný, the average relative humidity in December is 85%.Rainfall
In December, the rain falls for 11.9 days. Throughout December, 30mm (1.18") of precipitation is accumulated. Throughout the year, in Slaný, there are 164 rainfall days, and 456mm (17.95") of precipitation is accumulated.Snowfall
Months with snowfall are January through May, October through December. In December, it is snowing for 8.8 days. Throughout December, 77mm (3.03") of snow is accumulated. In Slaný, during the entire year, snow falls for 47.2 days and aggregates up to 377mm (14.84") of snow.Daylight
With an average of 8h and 6min of daylight, December has the shortest days of the year.On the first day of the month, sunrise is at 07:41 and sunset at 16:03. On the last day of December, sunrise is at 08:03 and sunset at 16:10 CET.
Sunshine
In December, the average sunshine is 4.2h.UV index
November and December, with an average maximum UV index of 1, are months with the lowest UV index. A UV Index of 2, and less, symbolizes a low health risk from exposure to the Sun's UV rays for average individuals.Note: A daily high UV index of 1 in December leads to these guidelines:
Most people can stay in the Sun for up to 1 hour without burning, apart from children that always must be protected from sun exposure. To guard against the harmful effects of the Sun, minimize exposure during midday. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. 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
How cold is December in Slaný?
What is the average humidity in December in Slaný?
How many days does it rain in December in Slaný?
How many days does it snow in December in Slaný?
What is the month with the shortest days in Slaný?
How many hours of daylight does Slaný have in December?
What time are sunrise and sunset in December in Slaný?
How many hours of sunshine does Slaný have in December?
What is the month with the lowest UV index in Slaný?
How high is the UV index in December in Slaný?
Average temperature in December
Slaný, Czech Republic
- Average high temperature in December: 3.1°C
The warmest month (with the highest average high temperature) is August (24.3°C).
The month with the lowest average high temperature is January (1.2°C).
- Average low temperature in December: -1.4°C
The month with the highest average low temperature is August (13.7°C).
The coldest month (with the lowest average low temperature) is January (-3.5°C).
Average pressure in December
Slaný, Czech Republic
- Average pressure in December: 1018.4mbar
The month with the highest atmospheric pressure is December (1018.4mbar).
The month with the lowest atmospheric pressure is July (1015.2mbar).
Average wind speed in December
Slaný, Czech Republic
- Average wind speed in December: 13.5km/h
The windiest month (with the highest average wind speed) is December (13.5km/h).
The calmest month (with the lowest average wind speed) is August (8.8km/h).
Average humidity in December
Slaný, Czech Republic
- Average humidity in December: 85%
The month with the highest relative humidity is January (88%).
The month with the lowest relative humidity is August (70%).
Average rainfall in December
Slaný, Czech Republic
- Average rainfall in December: 30mm
The wettest month (with the highest rainfall) is June (74mm).
The driest month (with the least rainfall) is November (22mm).
Average rainfall days in December
Slaný, Czech Republic
- Average rainfall days in December: 11.9 days
The month with the highest number of rainy days is May (19.4 days).
The month with the least rainy days is February (8.5 days).
Average snowfall in December
Slaný, Czech Republic
- Average snowfall in December: 77mm
The month with the highest snowfall is January (107mm).
The months with the least snowfall are June, July, August and September (0mm).
Average snowfall days in December
Slaný, Czech Republic
- Average snowfall days in December: 8.8 days
The month with the highest number of snowfall days is January (15.7 days).
The months with the least snowfall days are June, July, August and September (0 days).
Average daylight in December /
Average sunshine in December
Slaný, Czech Republic
- Average daylight in December: 8h and 1min
The month with the longest days is June (Average daylight: 16h and 18min).
The month with the shortest days is December (Average daylight: 8h and 6min).
- Average sunshine in December: 4h and 1min
The month with the most sunshine is August (Average sunshine: 10h and 30min).
The month with the least sunshine is January (Average sunshine: 3h and 42min).
Average sunshine days in December
Slaný, Czech Republic
- Average sunshine days in December: 12 days
The month with the most sunshine days is October (16.9 days).
The month with the least sunshine days is June (8.3 days).
Average UV index in December
Slaný, Czech Republic
- Average UV index in December: 1
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are November and December (UV index 1).
Average cloud cover in December
Slaný, Czech Republic
- Average cloud cover in December: 58
The month with the most cloud cover is January (Cloud cover 63).
The month with the least cloud cover is August (Cloud cover 32).
Average visibility in December
Slaný, Czech Republic
- Average visibility in December: 8km
The months with the highest visibility are March, April, May, June, July, August, September and October (9km).
The months with the lowest visibility are January, February, November and December (8km).
