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September Weather in Senec, Slovakia

Last updated: August 31, 2025

In September, the average temperature in Senec, Slovakia is a comfortable 17°C (63°F). Expect some variability, with temperatures ranging from a chilly 2°C (36°F) to a warm 33°C (91°F). During this month, 86 mm (3.4 in) of precipitation is likely, spread over about 9 days, and relative humidity hovers around 75%.

September Temperature in Senec

In September in Senec, the average temperature is 17°C (63°F), with maximums reaching up to 33°C (91°F) and minimums dropping as low as 2°C (36°F). This varied climate makes it a great time for travelers to experience a mix of warm and cool weather, perfect for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Senec, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Senec, September typically has an average temperature of 17°C (63°F), with highs reaching up to 33°C (91°F) and lows dropping to around 2°C (36°F).
JanFebMarAprMayJunJulAugSepOctNovDec333843536171727363544437
Data source: Temperature data for Senec generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Senec

In Senec in September, the precipitation amount is 86 mm (3.4 in), falling over the course of 9 days.

September Precipitation Trends in Senec

The chart displays monthly precipitation patterns in Senec, 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 Senec, September typically receives around 86 mm (3.4 inches) of precipitation spread over approximately 9 days.
JanFebMarAprMayJunJulAugSepOctNovDec353534327664656986505162
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Senec

In Senec in September, humidity is 75%. With an average temperature of 17°C (63°F), this humidity feels like a warm embrace, making outdoor activities a bit sticky and requiring frequent breaks to stay refreshed during your travels.

September Average Humidity in Senec

This chart illustrates the average monthly humidity levels in Senec, 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 Senec is approximately 75%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec90%87%85%78%74%77%76%76%75%85%90%91%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Senec

In Senec in September, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Senec, you can refer to this Hourly UV Index in Senec.

Maximum UV Index Levels in Senec for September

The chart shows the monthly maximum UV Index (UVI) for Senec 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 Senec typically reaches 6, which falls under the high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec235689886421
Data source: Senec 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 Senec Compares to Other Months

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

This table compares monthly weather conditions in Senec, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather0°C (33°F)35 mm (1.4 inches)90%low
February Weather3°C (38°F)35 mm (1.4 inches)87%moderate
March Weather6°C (44°F)34 mm (1.3 inches)85%moderate
April Weather11°C (53°F)32 mm (1.3 inches)78%high
May Weather16°C (61°F)76 mm (3.0 inches)73%very high
June Weather22°C (71°F)64 mm (2.5 inches)77%very high
July Weather22°C (73°F)65 mm (2.5 inches)76%very high
August Weather23°C (73°F)69 mm (2.7 inches)76%very high
September Weather17°C (63°F)86 mm (3.4 inches)75%high
October Weather12°C (54°F)50 mm (2.0 inches)85%moderate
November Weather7°C (45°F)51 mm (2.0 inches)90%low
December Weather3°C (37°F)62 mm (2.5 inches)91%low

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