December weather forecast
Zagreb, Croatia

The iconic buildings of the cathedral in Zagreb, Croatia in an early autumn morning
The iconic buildings of the cathedral in Zagreb, Croatia in an early autumn morning

Weather in December

The first month of the winter, December, is still a cold month in Zagreb, Croatia, with an average temperature ranging between max 4.6°C (40.3°F) and min -1.7°C (28.9°F).

Temperature

In December, the average high-temperature slightly decreases from a frosty 8.9°C (48°F) in November to a cold 4.6°C (40.3°F). In December, the average low-temperature is -1.7°C (28.9°F).

Humidity

With an average relative humidity of 84.8%, December is the most humid month in Zagreb.

Rainfall

In Zagreb, during December, the rain falls for 11 days and regularly aggregates up to 59.6mm (2.35") of precipitation. Throughout the year, there are 135.6 rainfall days, and 840mm (33.07") of precipitation is accumulated.

Snowfall

January through April, November and December are months with snowfall in Zagreb, Croatia. In December, snow falls for 6.7 days. Throughout the year, in Zagreb, there are 29 snowfall days.

Daylight

The month with the shortest days is December, with an average of 8h and 44min of daylight.
On the first day of the month, sunrise is at 07:16 and sunset at 16:13. On the last day of December, sunrise is at 07:37 and sunset at 16:20 CET.

Sunshine

December has the least sunshine of the year, with an average of 1.6h of sunshine.

UV index

The months with the lowest UV index in Zagreb are January, November and December, with an average maximum UV index of 1. A UV Index reading of 2, and below, represents a low health risk from exposure to the Sun's UV radiation for the ordinary person.
Note: The average daily UV index of 1 in December transform into the following instructions:
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. A wide-brim hat offers excellent sun protection for the eyes, ears, face, and neck. Sunglasses with UVA and UVB protection significantly reduce eye damage from sun exposure. Tightly woven, loose-fitting clothes provide additional protection from the Sun. Beware! The strength of the UV rays is increased nearly double-fold by the reflection of the snow.
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FAQ

What is the most humid month in Zagreb?

With an average relative humidity of 84.8%, December is the most humid month.

What is the average humidity in December in Zagreb?

In Zagreb, the average relative humidity in December is 84.8%.

How much does it rain in Zagreb in December?

In Zagreb, Croatia, during December, the rain falls for 11 days and regularly aggregates up to 59.6mm (2.35") of precipitation.

How many days does it snow in December in Zagreb?

In December, in Zagreb, snow falls for 6.7 days.

What is the month with the shortest days in Zagreb?

The month with the shortest days in Zagreb, Croatia, is December, with an average of 8h and 44min of daylight.

How many hours of daylight does Zagreb have in December?

In Zagreb, Croatia, the average day length in December is 8h and 44min.

When is the sunrise / sunset in December in Zagreb?

On the first day of December, sunrise is at 07:16 and sunset at 16:13. On the last day of the month, sunrise is at 07:37 and sunset at 16:20 CET.

What is the month with the least sunshine in Zagreb?

December has the least sunshine of the year in Zagreb, Croatia, with an average of 1.6h of sunshine.

How long on average sun shines in December in Zagreb?

In Zagreb, Croatia, the average sunshine duration in December is 1.6h.

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

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

What is the UV index reading in December in Zagreb?

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

Average temperature in December
Zagreb, Croatia

Average temperature in December - Zagreb, Croatia
  • Average high temperature in December: 4.6°C

The warmest month (with the highest average high temperature) is July (26.7°C).
The month with the lowest average high temperature is January (3.7°C).

  • Average low temperature in December: -1.7°C

The month with the highest average low temperature is July (14.7°C).
The coldest month (with the lowest average low temperature) is January (-3°C).

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Average humidity in December
Zagreb, Croatia

Average humidity in December - Zagreb, Croatia
  • Average humidity in December: 84.8%

The month with the highest relative humidity is December (84.8%).
The month with the lowest relative humidity is April (67.5%).

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Average rainfall in December
Zagreb, Croatia

Average rainfall in December - Zagreb, Croatia
  • Average rainfall in December: 59.6mm

The wettest month (with the highest rainfall) is June (95.3mm).
The driest month (with the least rainfall) is February (38.9mm).

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Average rainfall days in December
Zagreb, Croatia

Average rainfall days in December - Zagreb, Croatia
  • Average rainfall days in December: 11 days

The month with the highest number of rainy days is June (13.7 days).
The month with the least rainy days is February (9.4 days).

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Average snowfall days in December
Zagreb, Croatia

Average snowfall days in December - Zagreb, Croatia
  • Average snowfall days in December: 6.7 days

The month with the highest number of snowfall days is January (10.3 days).
The months with the least snowfall days are May, June, July, August, September and October (0 days).

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Average daylight in December /
Average sunshine in December
Zagreb, Croatia

Average daylight in December / Average sunshine in December - Zagreb, Croatia
  • Average daylight in December: 8h and 44min

The month with the longest days is June (Average daylight: 15h and 40min).
The month with the shortest days is December (Average daylight: 8h and 44min).

  • Average sunshine in December: 1h and 36min

The month with the most sunshine is July (Average sunshine: 8h and 54min).
The month with the least sunshine is December (Average sunshine: 1h and 36min).

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Average UV index in December
Zagreb, Croatia

Average UV index in December - Zagreb, Croatia
  • Average UV index in December: 1

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

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