December weather forecast
Lucerne, Switzerland

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The city of Lucerne, Switzerland, with the river between and the distant scenic mountains
The city of Lucerne, Switzerland, with the river between and the distant scenic mountains

Weather in December

The arrival of December in Lucerne marks the onset of winter, as temperatures continue to plummet. Snowfall becomes more significant this month, accumulating up to 146mm (5.75") over 7.9 days. The combination of reduced daylight and significant snowfall wields a hushed ambiance in the city. The Alpine beauty dons a blanket of white snow, signaling the start of the winter sports season. Despite being the darkest month, December carries a festive vibe stoked by the holiday season and winter sports.

Temperature

With the onset of December, Lucerne's average high-temperature slightly adjusts, moderately receding from November's chilly 7.8°C (46°F) to an icy 4.3°C (39.7°F). Lucerne records a consistent low-temperature of -1°C (30.2°F) during December nights.

Humidity

November and December, with an average relative humidity of 84%, are the most humid months in Lucerne.

Rainfall

In Lucerne, during December, the rain falls for 10 days and regularly aggregates up to 72mm (2.83") of precipitation. In Lucerne, during the entire year, the rain falls for 132.2 days and collects up to 1174mm (46.22") of precipitation.

Snowfall

Months with snowfall in Lucerne are January through April, October through December. In December, in Lucerne, it is snowing for 7.9 days. Throughout December, 146mm (5.75") of snow is accumulated. In Lucerne, during the entire year, snow falls for 21.1 days and aggregates up to 660mm (25.98") of snow.

Daylight

The month with the shortest days in Lucerne is December, with an average of 8h and 36min of daylight.
On the first day of the month, sunrise is at 07:52 and sunset at 16:39. On the last day of December, in Lucerne, sunrise is at 08:12 and sunset at 16:47 CET.

Sunshine

December has the least sunshine of the year in Lucerne, with an average of 1.2h of sunshine.

UV index

January, 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 threat to health from exposure to the Sun's UV radiation for the average person.
Note: In December, a daily UV index of 1 turns into the following recommendations:
While many people can endure lengthy sun exposure, it remains imperative to safeguard babies, children, and fair-skinned individuals. Avoiding the Sun during its peak radiation time around midday is a healthy practice. Select sunglasses that boast both UVA and UVB protection to limit the adverse effects of the sun on the eyes. Be cautious! The UV radiation from the Sun can be magnified almost twofold by snow reflection.

Frequently asked questions

Is it cold in Lucerne during December?

In Lucerne, 4.3°C (39.7°F) is the average high-temperature and -1°C (30.2°F) is the average low-temperature during December.

What is the most humid month in Lucerne?

The months with the highest humidity in Lucerne, Switzerland, are November and December, with an average relative humidity of 84%.

What is the average humidity in December in Lucerne?

In Lucerne, Switzerland, the average relative humidity in December is 84%.

How many days does it rain in December in Lucerne?

In Lucerne, during December, the rain falls for 10 days and regularly aggregates up to 72mm (2.83") of precipitation.

How many days does it snow in December in Lucerne?

In Lucerne, in December, during 7.9 snowfall days, 146mm (5.75") of snow is typically accumulated.

What is the month with the shortest days in Lucerne?

The month with the shortest days in Lucerne is December, with an average of 8h and 36min of daylight.

How many hours of daylight does Lucerne have in December?

In December, the average day length in Lucerne is 8h and 35min.

When is the sunrise / sunset in December in Lucerne?

In December, on the first day of the month, sunrise is at 07:52 and sunset at 16:39. On the last day of the month, in Lucerne, sunrise is at 08:12 and sunset at 16:47 CET.

What is the month with the least sunshine in Lucerne?

The month with the least sunshine in Lucerne is December, with an average of 1.2h of sunshine.

How long on average sun shines in December in Lucerne?

In Lucerne, Switzerland, the average sunshine duration in December is 1.2h.

What are the months with the lowest UV index in Lucerne?

January, November and December, with an average maximum UV index of 1, are months with the lowest UV index.

How high is the UV index in December in Lucerne?

In December, the average daily maximum UV index in Lucerne is 1. A UV Index reading of 2, and below, represents a minimal hazard to health from exposure to the Sun's UV radiation.
Average humidity
Average rainfall days
Average snowfall days
Average daylight
Average sunshine
Average UV index

Average temperature in December
Lucerne, Switzerland

Average temperature in December - Lucerne, Switzerland
  • Average high temperature in December: 4.3°C

The warmest month (with the highest average high temperature) is July (24.7°C).
The month with the lowest average high temperature is January (3.4°C).

  • Average low temperature in December: -1°C

The month with the highest average low temperature is July (14.2°C).
The coldest month (with the lowest average low temperature) is January (-2.3°C).

Average humidity in December
Lucerne, Switzerland

Average humidity in December - Lucerne, Switzerland
  • Average humidity in December: 84%

The months with the highest relative humidity are November and December (84%).
The month with the lowest relative humidity is April (70%).

Average rainfall in December
Lucerne, Switzerland

Average rainfall in December - Lucerne, Switzerland
  • Average rainfall in December: 72mm

The wettest month (with the highest rainfall) is June (154mm).
The driest month (with the least rainfall) is January (51mm).

Average rainfall days in December
Lucerne, Switzerland

Average rainfall days in December - Lucerne, Switzerland
  • Average rainfall days in December: 10 days

The month with the highest number of rainy days is June (13.5 days).
The month with the least rainy days is February (8.7 days).

Average snowfall in December
Lucerne, Switzerland

Average snowfall in December - Lucerne, Switzerland
  • Average snowfall in December: 146mm

The month with the highest snowfall is February (202mm).
The months with the least snowfall are May, June, July, August and September (0mm).

Average snowfall days in December
Lucerne, Switzerland

Average snowfall days in December - Lucerne, Switzerland
  • Average snowfall days in December: 7.9 days

The month with the highest number of snowfall days is December (7.9 days).
The months with the least snowfall days are May, June, July, August and September (0 days).

Average daylight in December /
Average sunshine in December
Lucerne, Switzerland

Average daylight in December / Average sunshine in December - Lucerne, Switzerland
  • Average daylight in December: 8h and 4min

The month with the longest days is June (Average daylight: 15h and 48min).
The month with the shortest days is December (Average daylight: 8h and 36min).

  • Average sunshine in December: 1h and 1min

The month with the most sunshine is July (Average sunshine: 6h and 30min).
The month with the least sunshine is December (Average sunshine: 1h and 12min).

Average UV index in December
Lucerne, Switzerland

Average UV index in December - Lucerne, Switzerland
  • Average UV index in December: 1

The month with the highest UV index is June (UV index 8).
The months with the lowest UV index are January, November and December (UV index 1).

Lucerne, Switzerland

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