Weather in September
September brings some respite from the summer heat as Sliven transitions towards the more temperate autumn season. The city's weather in September contrasts with August's hot days, indicating a fall in temperatures. Noteworthy is the reduced rainfall, making it one of the year's least rainy months. As September melds into October, a steady drop in temperatures is observable. Despite the declining temperatures, extended daylight of up to 12.5 hours, combined with 7.7 hours of daily sunshine, ensures an engaging outdoor environment.
On the first day of September, sunrise is at 06:40 and sunset at 19:49. On the last day of the month, sunrise is at 07:11 and sunset at 18:57 EEST.
Temperature
As Sliven enters September, the average high-temperature decreases from the a tropical 31.1°C (88°F) of August to a warm 25.8°C (78.4°F). Throughout September, Sliven records an average temperature of 15°C (59°F) at night.Rainfall
During September, Sliven regularly aggregates up to 32mm (1.26") of precipitation. During the entire year, Sliven aggregates up to 587mm (23.11") of precipitation.Daylight
In Sliven, the average length of the day in September is 12h and 29min.On the first day of September, sunrise is at 06:40 and sunset at 19:49. On the last day of the month, sunrise is at 07:11 and sunset at 18:57 EEST.
Sunshine
In September, the average sunshine is 7.7h.Updated: Jan 24, 2024
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Published by: Weather Atlas | About Us
Data Sources | Weather Forecasting & Climate
Frequently asked questions
What are the temperatures in Sliven in September?
Sliven in September has an average high-temperature of 25.8°C (78.4°F) and an average low-temperature of 15°C (59°F).
How much does it rain in Sliven in September?
Throughout September, 32mm (1.26") of precipitation is accumulated.
What is the average length of the day in September in Sliven?
In September, the average day length in Sliven is 12h and 29min.
When is the sunrise / sunset in September in Sliven?
In September, on the first day of the month, sunrise is at 06:40 and sunset at 19:49. On the last day of the month, in Sliven, sunrise is at 07:11 and sunset at 18:57 EEST.
How many hours of sunshine does Sliven have in September?
The average sunshine duration in September in Sliven, Bulgaria, is 7.7h.
Average temperature in September
Sliven, Bulgaria
- Average high temperature in September: 25.8°C
The warmest month (with the highest average high temperature) is August (31.1°C).
The month with the lowest average high temperature is January (6.4°C).
- Average low temperature in September: 15°C
The month with the highest average low temperature is August (19.2°C).
The coldest month (with the lowest average low temperature) is January (-1°C).
Average rainfall in September
Sliven, Bulgaria
- Average rainfall in September: 32mm
The wettest month (with the highest rainfall) is May (67mm).
The driest month (with the least rainfall) is March (31mm).
Average daylight in September /
Average sunshine in September
Sliven, Bulgaria
- Average daylight in September: 12h and 3min
The month with the longest days is June (Average daylight: 15h and 18min).
The month with the shortest days is December (Average daylight: 9h and 6min).
- Average sunshine in September: 7h and 4min
The month with the most sunshine is July (Average sunshine: 10h and 30min).
The month with the least sunshine is December (Average sunshine: 2h and 48min).
Sliven, Bulgaria
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