September Weather in Castellar de Santisteban, Spain

Last updated: August 27, 2025

In Castellar de Santisteban, Spain, the average temperature in September hovers around 24°C (75°F), providing a pleasant climate. Expect fluctuations, with minimums dipping to 10°C (49°F) and maximums soaring up to 38°C (101°F). During this time, precipitation is relatively low at 23 mm (0.9 in) over approximately 4 days, while the average humidity levels sit at a comfortable 53%.

September Temperature in Castellar de Santisteban

In September in Castellar de Santisteban, the average temperature is 24°C (75°F). Maximums can reach 38°C (101°F) and minimums can be as low as 10°C (49°F). This variation in temperature makes it essential for travelers to pack accordingly, ensuring comfort from the heat during the day and cooler temperatures at night.

September Weather in Castellar de Santisteban: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Castellar de Santisteban, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castellar de Santisteban, September typically has an average temperature of 24°C (75°F), with highs reaching up to 38°C (101°F) and lows dropping to around 10°C (49°F).

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

September Precipitation in Castellar de Santisteban

In Castellar de Santisteban in September, the total precipitation amount is 23 mm (0.9 in) over a span of 4 days.

September Precipitation Trends in Castellar de Santisteban

The chart displays monthly precipitation patterns in Castellar de Santisteban, 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 Castellar de Santisteban, September typically receives around 23 mm (0.9 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 Castellar de Santisteban

In Castellar de Santisteban in September, humidity is 53%. With an average temperature of 24°C (75°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls and outdoor explorations, though travelers should stay hydrated to fully enjoy their adventures.

September Average Humidity in Castellar de Santisteban

This chart illustrates the average monthly humidity levels in Castellar de Santisteban, 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 Castellar de Santisteban is approximately 53%, 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 Castellar de Santisteban

In Castellar de Santisteban in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Castellar de Santisteban.

Maximum UV Index Levels in Castellar de Santisteban for September

The chart shows the monthly maximum UV Index (UVI) for Castellar de Santisteban 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 Castellar de Santisteban typically reaches 9, which falls under the very high exposure category.

Data source: Castellar de Santisteban 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 Castellar de Santisteban Compares to Other Months

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

This table compares monthly weather conditions in Castellar de Santisteban, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	7°C (44°F)	42 mm (1.7 inches)	85%	moderate
February Weather	10°C (50°F)	41 mm (1.6 inches)	78%	moderate
March Weather	12°C (53°F)	76 mm (3.0 inches)	66%	high
April Weather	14°C (58°F)	76 mm (3.0 inches)	60%	very high
May Weather	20°C (68°F)	28 mm (1.1 inches)	56%	very high
June Weather	25°C (77°F)	14 mm (0.6 inches)	44%	extreme
July Weather	29°C (84°F)	4 mm (0.2 inches)	44%	extreme
August Weather	29°C (84°F)	12 mm (0.5 inches)	42%	very high
September Weather	24°C (75°F)	23 mm (0.9 inches)	53%	very high
October Weather	18°C (65°F)	40 mm (1.6 inches)	70%	high
November Weather	11°C (53°F)	79 mm (3.1 inches)	83%	moderate
December Weather	9°C (48°F)	67 mm (2.6 inches)	86%	moderate