September Weather in Costesti, Romania

Last updated: August 27, 2025

In Costesti, Romania, the average temperature in September is a pleasant 18°C (64°F), perfect for outdoor adventures. Expect a minimum of 2°C (35°F) and a warm maximum of 35°C (95°F). Rainfall is moderate, with approximately 35 mm (1.4 in) of precipitation spread over 7 days. The average humidity hovers around 62%, providing a comfortable atmosphere to enjoy your stay!

September Temperature in Costesti

In September in Costesti, the average temperature is 18°C (64°F). The maximum can reach 35°C (95°F), while the minimum can drop as low as 2°C (35°F). This makes Costesti an ideal destination for travelers who enjoy mild weather with the possibility of warm days and cool evenings.

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

The chart illustrates September temperature patterns in Costesti, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Costesti, September typically has an average temperature of 18°C (64°F), with highs reaching up to 35°C (95°F) and lows dropping to around 2°C (35°F).

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

September Precipitation in Costesti

In Costesti in September, the precipitation amount is 35 mm (1.4 in) over the course of 7 days.

September Precipitation Trends in Costesti

The chart displays monthly precipitation patterns in Costesti, 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 Costesti, September typically receives around 35 mm (1.4 inches) of precipitation spread over approximately 7 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 Costesti

In Costesti in September humidity is 62%. With an average temperature of 18°C (64°F), this humidity feels like a warm yet refreshing embrace, making it quite pleasant for traveling as long as you stay hydrated and take breaks in the shade.

September Average Humidity in Costesti

This chart illustrates the average monthly humidity levels in Costesti, 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 Costesti is approximately 62%, 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 Costesti

In Costesti 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 Costesti.

Maximum UV Index Levels in Costesti for September

The chart shows the monthly maximum UV Index (UVI) for Costesti 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 Costesti typically reaches 7, which falls under the high exposure category.

Data source: Costesti 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 Costesti Compares to Other Months

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

This table compares monthly weather conditions in Costesti, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	-1°C (30°F)	22 mm (0.9 inches)	92%	low
February Weather	1°C (34°F)	37 mm (1.4 inches)	88%	moderate
March Weather	5°C (41°F)	38 mm (1.5 inches)	86%	moderate
April Weather	11°C (52°F)	33 mm (1.3 inches)	79%	high
May Weather	16°C (62°F)	65 mm (2.6 inches)	73%	very high
June Weather	21°C (70°F)	107 mm (4.2 inches)	73%	very high
July Weather	22°C (72°F)	65 mm (2.6 inches)	68%	very high
August Weather	23°C (73°F)	41 mm (1.6 inches)	56%	very high
September Weather	18°C (64°F)	35 mm (1.4 inches)	62%	high
October Weather	12°C (53°F)	33 mm (1.3 inches)	80%	moderate
November Weather	6°C (43°F)	31 mm (1.2 inches)	89%	moderate
December Weather	1°C (35°F)	53 mm (2.1 inches)	90%	low