September weather forecastSvilna, Croatia
September
Weather in September
The first month of the autumn, September, is still a warm month in Svilna, Croatia, with an average temperature fluctuating between 11.7°C (53.1°F) and 23.2°C (73.8°F).Temperature
The average high-temperature drops in September, from August's moderately hot 29.2°C (84.6°F) to a still warm 23.2°C (73.8°F). Svilna reports an average low-temperature of 11.7°C (53.1°F) during the nights of September.Humidity
In Svilna, the average relative humidity in September is 68%.Rainfall
In September, the rain falls for 9.4 days. Throughout September, 25mm (0.98") of precipitation is accumulated. In Svilna, during the entire year, the rain falls for 129.1 days and collects up to 382mm (15.04") of precipitation.Snowfall
May through October are months without snowfall in Svilna.Daylight
In Svilna, the average length of the day in September is 12h and 32min.On the first day of September, sunrise is at 06:10 and sunset at 19:26. On the last day of the month, sunrise is at 06:46 and sunset at 18:30 CEST.
Sunshine
The average sunshine in September in Svilna is 9.2h.UV index
In September, the average daily maximum UV index in Svilna is 4. A UV Index estimate of 3 to 5 represents a moderate threat to health from unprotected exposure to Sun's UV rays for average individuals.Note: In September, a daily UV index of 4 turns into the following recommendations:
Preventative actions are necessary - The mandate to avoid skin and eye damage is in place. The Sun's UV radiation is especially harmful around midday, so reduce exposure and stay safe. A wide-brimmed hat provides unparalleled sun protection for sensitive areas like the eyes, ears, and neck.
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
Average temperature in September
Svilna, Croatia
- Average high temperature in September: 23.2°C
The warmest month (with the highest average high temperature) is August (29.2°C).
The month with the lowest average high temperature is January (3.9°C).
- Average low temperature in September: 11.7°C
The month with the highest average low temperature is August (15.3°C).
The coldest month (with the lowest average low temperature) is January (-1.6°C).
Average pressure in September
Svilna, Croatia
- Average pressure in September: 1017.5mbar
The month with the highest atmospheric pressure is December (1020.8mbar).
The months with the lowest atmospheric pressure are May, June and July (1014.6mbar).
Average wind speed in September
Svilna, Croatia
- Average wind speed in September: 7.2km/h
The windiest month (with the highest average wind speed) is March (9.5km/h).
The calmest month (with the lowest average wind speed) is August (6.7km/h).
Average humidity in September
Svilna, Croatia
- Average humidity in September: 68%
The month with the highest relative humidity is January (84%).
The month with the lowest relative humidity is August (63%).
Average rainfall in September
Svilna, Croatia
- Average rainfall in September: 25mm
The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is November (16mm).
Average rainfall days in September
Svilna, Croatia
- Average rainfall days in September: 9.4 days
The month with the highest number of rainy days is May (17.7 days).
The month with the least rainy days is November (6.6 days).
Average snowfall in September
Svilna, Croatia
- Average snowfall in September: 0mm
The month with the highest snowfall is January (60mm).
The months with the least snowfall are May, June, July, August, September and October (0mm).
Average snowfall days in September
Svilna, Croatia
- Average snowfall days in September: 0 days
The month with the highest number of snowfall days is January (7.6 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
Svilna, Croatia
- Average daylight in September: 12h and 30min
The month with the longest days is June (Average daylight: 15h and 36min).
The month with the shortest days is December (Average daylight: 8h and 48min).
- Average sunshine in September: 9h and 12min
The month with the most sunshine is August (Average sunshine: 11h and 30min).
The month with the least sunshine is February (Average sunshine: 4h and 12min).
Average sunshine days in September
Svilna, Croatia
- Average sunshine days in September: 18.5 days
The months with the most sunshine days are October and November (21.5 days).
The month with the least sunshine days is May (10.7 days).
Average UV index in September
Svilna, Croatia
- Average UV index in September: 4
The months with the highest UV index are June, July and August (UV index 6).
The months with the lowest UV index are January, November and December (UV index 2).
Average cloud cover in September
Svilna, Croatia
- Average cloud cover in September: 31
The month with the most cloud cover is February (Cloud cover 56).
The month with the least cloud cover is August (Cloud cover 21).
Average visibility in September
Svilna, Croatia
- Average visibility in September: 9km
The months with the highest visibility are July and August (10km).
The months with the lowest visibility are January and February (8km).





