September weather forecast and climate
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
September, the first month of the autumn, in Zagreb, is also an agreeable month, with temperature in the range of an average high of 22.1°C (71.8°F) and an average low of 10.8°C (51.4°F).

Temperature

In September, the average high-temperature slightly decreases, from a warm 26.3°C (79.3°F) in August, to a pleasant 22.1°C (71.8°F). The average low-temperature, in September, is 10.8°C (51.4°F).

Humidity

In September, the average relative humidity is 77.7%.

Rainfall

In Zagreb, during 10.4 rainfall days, 85.8mm (3.38") of precipitation is typically accumulated. Throughout the year, there are 135.6 rainfall days, and 840mm (33.07") of precipitation is accumulated.

Snowfall

In Zagreb, Croatia, snow does not fall in May through October.

Daylight

The average length of the day in September is 12.5h.

Sunshine

In September, the average sunshine in Zagreb is 6.3h.

UV index

The average daily maximum UV index in Zagreb is 5. A UV Index reading of 3 to 5 represents a medium health hazard from unsafe exposure to the UV radiation for the average person.
Note: The daily maximum UV index of 5 interpret into the following advice:
Take precautions. Light skin individuals may get burned in less than 30 minutes. The Sun's most intense and consequently most harmful UV radiation during midday hours should be decreased by minimizing exposure and seeking shade. 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.

What is the temperature in September in Zagreb?

The average high-temperature, in September, in Zagreb, Croatia, is 22.1°C (71.8°F), while the average low-temperature is 10.8°C (51.4°F).

What is the average humidity in September in Zagreb?

In September, the average relative humidity in Zagreb is 77.7%.

How much does it rain in Zagreb in September?

In Zagreb, Croatia, during September, the rain falls for 10.4 days and regularly aggregates up to 85.8mm (3.38") of precipitation.

When it does not snow in Zagreb?

In Zagreb, Croatia, snow does not fall in May through October.

How many hours of daylight does Zagreb have in September?

In September, the average length of the day in Zagreb is 12.5h.

How long on average sun shines in September in Zagreb?

In September, the average sunshine in Zagreb is 6.3h.

What is the UV index intensity in September in Zagreb?

The average daily maximum UV index in September in Zagreb is 5. A UV Index value of 3 to 5 symbolizes a medium hazard to health from the exposure to the Sun's UV radiation.
Average temperature in September - Zagreb, Croatia
  • 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).

  • 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).

Average humidity in September - Zagreb, Croatia
  • 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%).

Average rainfall in September - Zagreb, Croatia
  • Average rainfall in September: 85.8mm

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

Average rainfall days in September - Zagreb, Croatia
  • 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 least rainy days is February (9.4 days).

Average snowfall days in September - Zagreb, Croatia
  • Average snowfall days in September: 0 days

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

Average daylight in September / Average sunshine in September - Zagreb, Croatia
  • Average daylight in September: 12.5h

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 September: 6.3h

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

Average UV index in September - Zagreb, Croatia
  • 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).