December weather forecast
Zagreb, Croatia

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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 weather in Zagreb in December is unmistakably winter-like, freezing cold, but undeniably beautiful. In a reversal of July's trends, this month records the coldest average maximum temperature at 4.6°C, reaffirming the peak of winter season. The daylight hours are the shortest, clocking in at 8.7 hours. The progression into January will sustain these cold conditions. Despite the low temperatures, December's festive spirit elevates the city into a place of magical winter wonderland.

Temperature

December in Zagreb reveals a small adjustment in temperature, transitioning from an average high of a chilly 8.9°C in November to a wintry 4.6°C. Zagreb's nighttime temperature during December is consistently averaged at a freezing cold -1.7°C.

Humidity

The most humid month is December, with an average relative humidity of 84.8%.

Rainfall

In Zagreb, Croatia, in December, it is raining for 11 days, with typically 60mm of accumulated precipitation. Throughout the year, there are 135.6 rainfall days, and 840mm of precipitation is accumulated.

Snowfall

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

Daylight

With an average of 8h and 42min of daylight, December has the shortest days of the year.
On the first day of December in Zagreb, 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.

Sunshine

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

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 minimal health vulnerability from exposure to the Sun's UV radiation for the ordinary person.
Note: The daily high UV index of 1 in December translates into this advice:
Extended sun exposure is not an issue for the majority. Children, infants, and fair-skinned individuals always need to be protected. UV radiation is strongest from the Sun during midday; protect yourself by staying in shaded areas. A wide-brimmed hat is a staple for defending the face, eyes, ears, and neck from the Sun. Take into account! The reflection from snow can nearly double the Sun's UV radiation intensity.
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FAQ

How cold is December in Zagreb?

The high-temperature, in December, in Zagreb, records 4.6°C, while the low-temperature is -1.7°C.

What is the most humid month in Zagreb?

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

What is the average humidity in December in Zagreb?

The average relative humidity in December in Zagreb is 84.8%.

How many days does it rain in December in Zagreb?

In December, the rain falls for 11 days. Throughout December, 60mm of precipitation is accumulated.

How many days does it snow in December in Zagreb?

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

What is the month with the shortest days in Zagreb?

With an average of 8h and 42min of daylight, December has the shortest days of the year in Zagreb.

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

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

When is the sunrise / sunset in December in Zagreb?

In December, on the first day of the month, 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, with an average of 1.6h of sunshine.

How long on average sun shines in December in Zagreb?

The average sunshine duration in December in Zagreb is 1.6h.

What is the month with the lowest UV index in Zagreb?

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

What is the UV index reading in December in Zagreb?

In December, the average daily maximum UV index in Zagreb, Croatia, is 1. A UV Index value of 2, and less, symbolizes a low health threat from unsafe exposure to Sun's UV rays.
Average high temperature
Average low temperature
Average humidity
Average rainfall
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 4min

The month with the longest days is June (Average daylight: 15h and 42min).
The month with the shortest days is December (Average daylight: 8h and 42min).

  • Average sunshine in December: 1h and 4min

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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Zagreb, Croatia

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