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Weather in September
Temperature
As August makes way for September, Zagreb's average high-temperature eases from a warm 26.3°C (79.3°F) to a pleasant 22.1°C (71.8°F). The average nighttime temperature lowers to a cool 10.8°C (51.4°F) throughout September.Humidity
In September, the average relative humidity is 77.7%.Rainfall
In Zagreb, in September, it is raining for 10.4 days, with typically 86mm (3.39") of accumulated precipitation. In Zagreb, during the entire year, the rain falls for 135.6 days and collects up to 840mm (33.07") of precipitation.Snowfall
In Zagreb, snow does not fall in May through October.Daylight
In Zagreb, Croatia, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:17 and sunset at 19:34. On the last day of the month, sunrise is at 06:53 and sunset at 18:38 CEST.
Sunshine
In Zagreb, the average sunshine in September is 6.3h.UV index
In Zagreb, the average daily maximum UV index in September is 5. A UV Index value of 3 to 5 symbolizes a moderate threat to health from unprotected exposure to Sun's UV rays for the average person.Note: The maximum UV index of 5 during September translates into these guidelines:
Undertake precautions - Guarding against sun damage is counselled. For health reasons, it's advisable to reduce direct sun exposure during peak hours around midday. Employ a wide-brim hat for potent defense against up to 50% of UV rays.
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Data Sources | Weather Forecasting & Climate
Frequently asked questions
What is the temperature in September in Zagreb?
What is the average humidity in September in Zagreb?
How many days does it rain in September in Zagreb?
When it does not snow in Zagreb?
What is the average length of the day in September in Zagreb?
When are sunrise and sunset in September in Zagreb?
How many hours of sunshine does Zagreb have in September?
How high is the UV index in September in Zagreb?
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).
The 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: 12h and 3min
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 September: 6h and 2min
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).
Average UV index in September
Zagreb, Croatia
- Average UV index in September: 5
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).
Zagreb, Croatia
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