Zagreb
Croatia
Long-term weather forecast
Long-term weather forecast
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September weather forecast and Climate
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
September is a beautiful autumn month in Zagreb with blue skies and mild conditions. The landscape is colorful and the mornings and evenings are particularly refreshing.
The average humidity scales up as the temperatures register in the modest range of 10.6°C (51.1°F) to 22.2°C (72°F).
September brings around 86.4mm (3.4") of rainfall and keeps the visitors on their toes with a touch of unpredictability. The days last for about 13 hours as the daily sunshine lasts for 6.3 hours. September is an excellent time to visit Zagreb and is the last temperate month before the weather turns to the colder side.
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  • The average high temperature in September: 22.1°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).

  • The average low temperature in September: 10.8°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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  • The average humidity in September: 77.7%

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

  • The average rainfall in September: 85.8mm

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

  • The average rainfall days in September: 10.4 days

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

  • The average snowfall days in September: 0 days

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

  • The average daylight in September: 13h

The month with the longest days is June (Average daylight: 16h).
Months with shortest days are January, November and December (Average daylight: 9h).

  • The average sunshine in September: 6.3h

The month with most sunshine is July (Average sunshine: 8.9h).
The month with least sunshine is December (Average sunshine: 1.6h).

  • The average UV index in September: 5

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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