December weather forecast and climate
Ljubljana, Slovenia

The capital of Slovenia, Ljubljana, with a small river flowing through the city, and a distant view of the mountains
The capital of Slovenia, Ljubljana, with a small river flowing through the city, and a distant view of the mountains

Weather in December

The first month of the winter, December, is also a wintry month in Ljubljana, Slovenia, with average temperature ranging between min -1.1°C (30°F) and max 3.8°C (38.8°F).

Temperature

In Ljubljana, the average high-temperature in December decreases, from a frosty 8.8°C (47.8°F) in November, to a wintry 3.8°C (38.8°F). In December, the average low-temperature is -1.1°C (30°F).

Rainfall

In Ljubljana, during December, the rain falls for 14 days and regularly aggregates up to 107mm (4.21") of precipitation. In Ljubljana, during the entire year, the rain falls for 151 days and collects up to 1361mm (53.58") of precipitation.

Daylight

The month with the shortest days is December, with an average of 8.7h of daylight.

Sunshine

December has the least sunshine of the year in Ljubljana, with an average of 1.8h of sunshine.

UV index

Months with the lowest UV index are January, November and December, with an average maximum UV index of 1. A UV Index of 2, and less, symbolizes a low threat to health from the exposure to the Sun's UV radiation for the ordinary person.
Note: In December, the average maximum UV index of 1 translate into the following recommendations:
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. The solar radiation is most powerful near the mid-day, so the exposure to the direct Sun should be reduced accordingly. 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.
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FAQ

What is the temperature in December in Ljubljana?

In December, in Ljubljana, Slovenia, the average high-temperature is 3.8°C (38.8°F), and the average low-temperature is -1.1°C (30°F).

How many days does it rain in December in Ljubljana?

In Ljubljana, Slovenia, in December, during 14 rainfall days, 107mm (4.21") of precipitation is typically accumulated.

What is the month with the shortest days in Ljubljana?

The month with the shortest days is December, with an average of 8.7h of daylight.

What is the average length of the day in December in Ljubljana?

The average length of the day in December in Ljubljana, Slovenia, is 8.7h.

What is the month with the least sunshine in Ljubljana?

December has the least sunshine of the year in Ljubljana, with an average of 1.8h of sunshine.

How many hours of sunshine does Ljubljana have in December?

In Ljubljana, the average sunshine in December is 1.8h.

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

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 Ljubljana?

The average daily maximum UV index in December is 1. A UV Index estimate of 2, and below, represents a low health threat from unprotected exposure to the UV radiation.

Average temperature in December
Ljubljana, Slovenia

Average temperature in December - Ljubljana, Slovenia
  • Average high temperature in December: 3.8°C

The warmest month (with the highest average high temperature) is July (27.3°C).
The month with the lowest average high temperature is January (3.4°C).

  • Average low temperature in December: -1.1°C

The month with the highest average low temperature is July (15.5°C).
The coldest month (with the lowest average low temperature) is January (-2.5°C).

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Average rainfall in December
Ljubljana, Slovenia

Average rainfall in December - Ljubljana, Slovenia
  • Average rainfall in December: 107mm

The wettest months (with the highest rainfall) are September and October (147mm).
The driest month (with the least rainfall) is January (69mm).

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Average rainfall days in December
Ljubljana, Slovenia

Average rainfall days in December - Ljubljana, Slovenia
  • Average rainfall days in December: 14 days

The month with the highest number of rainy days is June (15 days).
The month with the least rainy days is February (9 days).

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Average daylight in December /
Average sunshine in December
Ljubljana, Slovenia

Average daylight in December / Average sunshine in December - Ljubljana, Slovenia
  • Average daylight in December: 8.7h

The month with the longest days is June (Average daylight: 15.7h).
The month with the shortest days is December (Average daylight: 8.7h).

  • Average sunshine in December: 1.8h

The month with the most sunshine is July (Average sunshine: 9.5h).
The month with the least sunshine is December (Average sunshine: 1.8h).

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Average UV index in December
Ljubljana, Slovenia

Average UV index in December - Ljubljana, Slovenia
  • Average UV index in December: 1

Months with the highest UV index are June and July (UV index 8).
Months with the lowest UV index are January, November and December (UV index 1).

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