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
Leiden, Netherlands, starts December with an average high-temperature of a chilly 7.5°C (45.5°F), a minor shift from November's 10.3°C (50.5°F). During the nights of December, the average low-temperature holds at a cold 4.9°C (40.8°F).Humidity
The months with the highest humidity are January and December, with an average relative humidity of 83%.Rainfall
In Leiden, during December, the rain falls for 18 days and regularly aggregates up to 42mm (1.65") of precipitation. Throughout the year, there are 183.4 rainfall days, and 400mm (15.75") of precipitation is accumulated.Snowfall
Months with snowfall are January through March, November and December. In Leiden, during December, snow falls for 1.9 days and regularly aggregates up to 8mm (0.31") of snow. Throughout the year, in Leiden, there are 9.5 snowfall days, and 46mm (1.81") of snow is accumulated.Daylight
The month with the shortest days in Leiden is December, with an average of 7h and 48min of daylight.On the first day of December, sunrise is at 08:29 and sunset at 16:33. On the last day of the month, sunrise is at 08:50 and sunset at 16:39 CET.
Sunshine
The month with the least sunshine is December, with an average of 3.5h of sunshine.UV index
January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Leiden. A UV Index value of 2, and less, symbolizes a low threat to health 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:
Protection from prolonged sun exposure is necessary for babies, children, and individuals with sensitive skin. Limiting sun exposure during midday hours helps in reducing the harmful effects of UV radiation. To best shield against UV radiation, choose sun-safe garments and dependable sunglasses. Consider carefully! The reflective quality of snow can almost double the intensity of the Sun's UV radiation.
Frequently asked questions
What is the average December temperature in Leiden?
What is the most humid month in Leiden?
What is the average humidity in December in Leiden?
How much does it rain in Leiden in December?
How many days does it snow in December in Leiden?
What is the month with the shortest days in Leiden?
What is the average length of the day in December in Leiden?
When is the sunrise / sunset in December in Leiden?
What is the month with the least sunshine in Leiden?
How long on average sun shines in December in Leiden?
When is the lowest UV index in Leiden?
What is the UV index intensity in December in Leiden?
Average temperature in December
Leiden, Netherlands
- Average high temperature in December: 7.5°C
The warmest month (with the highest average high temperature) is August (21°C).
The month with the lowest average high temperature is January (5.8°C).
- Average low temperature in December: 4.9°C
The month with the highest average low temperature is August (16.3°C).
The coldest month (with the lowest average low temperature) is February (2.8°C).
Average pressure in December
Leiden, Netherlands
- Average pressure in December: 1014.3mbar
The month with the highest atmospheric pressure is September (1016.8mbar).
The month with the lowest atmospheric pressure is November (1011.2mbar).
Average wind speed in December
Leiden, Netherlands
- Average wind speed in December: 24.7km/h
The windiest month (with the highest average wind speed) is December (24.7km/h).
The calmest month (with the lowest average wind speed) is July (16.1km/h).
Average humidity in December
Leiden, Netherlands
- Average humidity in December: 83%
The months with the highest relative humidity are January and December (83%).
The months with the lowest relative humidity are April and August (75%).
Average rainfall in December
Leiden, Netherlands
- Average rainfall in December: 42mm
The wettest month (with the highest rainfall) is August (53mm).
The driest month (with the least rainfall) is April (14mm).
Average rainfall days in December
Leiden, Netherlands
- Average rainfall days in December: 18 days
The month with the highest number of rainy days is August (19.1 days).
The month with the least rainy days is April (11.3 days).
Average snowfall in December
Leiden, Netherlands
- Average snowfall in December: 8mm
The month with the highest snowfall is February (22mm).
The months with the least snowfall are April, May, June, July, August, September and October (0mm).
Average snowfall days in December
Leiden, Netherlands
- Average snowfall days in December: 1.9 days
The month with the highest number of snowfall days is February (3.8 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
Leiden, Netherlands
- 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 3min
The month with the most sunshine is June (Average sunshine: 10h and 18min).
The month with the least sunshine is December (Average sunshine: 3h and 30min).
Average sunshine days in December
Leiden, Netherlands
- Average sunshine days in December: 8.1 days
The month with the most sunshine days is April (16.8 days).
The month with the least sunshine days is December (8.1 days).
Average UV index in December
Leiden, Netherlands
- Average UV index in December: 2
The months with the highest UV index are June, July and August (UV index 5).
The months with the lowest UV index are January, February, November and December (UV index 2).
Average cloud cover in December
Leiden, Netherlands
- Average cloud cover in December: 65
The month with the most cloud cover is December (Cloud cover 65).
The months with the least cloud cover are April and August (Cloud cover 38).
Average visibility in December
Leiden, Netherlands
- Average visibility in December: 9km
The months with the highest visibility are February, March, April, May, June, July, August, September, October and November (10km).
The months with the lowest visibility are January and December (9km).
Leiden, Netherlands
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