September Weather in Avren, Bulgaria

Last updated: August 22, 2025

In Avren, Bulgaria, the average temperature in September is a pleasant 20°C (68°F). During this time, temperatures can vary from a cool 6°C (42°F) to a warm 31°C (89°F). Expect some rain, with an average precipitation of 21 mm (0.8 in) over 4 days. The air tends to be moderately humid, with an average humidity of 63%.

September Temperature in Avren

In September in Avren, the average temperature is 20°C (68°F). Maximums can reach 31°C (89°F), and minimums can be as low as 6°C (42°F). This makes Avren a delightful destination for travelers seeking a comfortable climate.

September Weather in Avren: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Avren, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Avren, September typically has an average temperature of 20°C (68°F), with highs reaching up to 31°C (89°F) and lows dropping to around 6°C (42°F).

Data source: Temperature data for Avren generated using information from the Copernicus Climate Change Service.

September Precipitation in Avren

In Avren in September, the precipitation amount is 21 mm (0.8 in) over a span of 4 days.

September Precipitation Trends in Avren

The chart displays monthly precipitation patterns in Avren, with values for each month alongside September’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how September’s conditions compare to those of other months. In Avren, September typically receives around 21 mm (0.8 inches) of precipitation spread over approximately 4 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Avren

In Avren in September humidity is 63%. With an average temperature of 20°C (68°F), this humidity feels like a warm, refreshing embrace, making travel comfortable and inviting, as long as you stay hydrated and take occasional breaks in the shade.

September Average Humidity in Avren

This chart illustrates the average monthly humidity levels in Avren, with September’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In September, average humidity in Avren is approximately 63%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Avren

In Avren in September, the maximum UV index is 7, which corresponds to the high Exposure Category. This means that the time to burn is approximately 25 minutes. For more detailed information, you can check the Hourly UV Index in Avren.

Maximum UV Index Levels in Avren for September

The chart shows the monthly maximum UV Index (UVI) for Avren in September, representing the highest UV radiation level. The UVI measures the intensity of ultraviolet radiation from the sun, indicating the potential risk of sunburn and UV-related health issues. In September, the maximum UV index in Avren typically reaches 7, which falls under the high exposure category.

Data source: Avren September UVI data generated using information from the Copernicus Climate Change Service.

UV Risk Categories

Extreme (11+): Avoid the sun, stay in shade.
Very High (8-10): Limit sun exposure.
High (6-7): Use SPF 30+ and protective clothing.
Moderate (3-5): Midday shade recommended.
Low (0-2): No protection needed.

How September Weather in Avren Compares to Other Months

Weather in Avren varies notably across the year, with each month offering distinct climate conditions. This page compares September’s weather to other months in Avren, focusing on differences in temperature, rainfall, humidity, and UV levels.

This table compares monthly weather conditions in Avren, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	3°C (37°F)	57 mm (2.2 inches)	84%	low
February Weather	5°C (41°F)	44 mm (1.7 inches)	81%	moderate
March Weather	7°C (45°F)	59 mm (2.3 inches)	79%	high
April Weather	11°C (51°F)	39 mm (1.5 inches)	75%	high
May Weather	16°C (62°F)	52 mm (2.0 inches)	77%	very high
June Weather	21°C (70°F)	90 mm (3.6 inches)	71%	very high
July Weather	23°C (74°F)	59 mm (2.3 inches)	69%	very high
August Weather	24°C (75°F)	16 mm (0.6 inches)	60%	very high
September Weather	20°C (68°F)	21 mm (0.8 inches)	63%	high
October Weather	15°C (58°F)	63 mm (2.5 inches)	76%	moderate
November Weather	10°C (50°F)	50 mm (2.0 inches)	81%	moderate
December Weather	6°C (42°F)	71 mm (2.8 inches)	84%	low