September Weather in Castellet, Spain

Last updated: August 27, 2025

In September, the average temperature in Castellet, Spain hovers around 22°C (72°F), offering a pleasant climate for outdoor activities. However, expect some variability, with minimum temperatures dipping to 14°C (57°F) and highs reaching up to 30°C (86°F). Rainfall is also a factor, as the region experiences about 98 mm (3.8 in) of precipitation spread over 13 days, contributing to an average humidity of 68%. Enjoy the balanced weather while exploring all that this charming destination has to offer!

September Temperature in Castellet

In September in Castellet, the average temperature is 22°C (72°F). Maximums can reach 30°C (86°F) and minimums can be as low as 14°C (57°F). This makes it an ideal time for travelers seeking pleasant weather for outdoor activities and exploration.

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

The chart illustrates September temperature patterns in Castellet, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Castellet, September typically has an average temperature of 22°C (72°F), with highs reaching up to 30°C (86°F) and lows dropping to around 14°C (57°F).

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

September Precipitation in Castellet

In Castellet in September, the precipitation amount is 98 mm (3.8 in) spread over 13 days.

September Precipitation Trends in Castellet

The chart displays monthly precipitation patterns in Castellet, 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 Castellet, September typically receives around 98 mm (3.8 inches) of precipitation spread over approximately 13 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 Castellet

In Castellet in September humidity is 68%. With an average temperature of 22°C (72°F), this humidity feels like a warm embrace, slightly stifling but still manageable for traveling, creating an atmosphere that encourages leisurely outdoor activities while prompting occasional breaks for refreshment.

September Average Humidity in Castellet

This chart illustrates the average monthly humidity levels in Castellet, 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 Castellet is approximately 68%, 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 Castellet

In Castellet 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 Castellet.

Maximum UV Index Levels in Castellet for September

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

Data source: Castellet 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 Castellet Compares to Other Months

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

This table compares monthly weather conditions in Castellet, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (49°F)	57 mm (2.2 inches)	79%	moderate
February Weather	11°C (52°F)	47 mm (1.9 inches)	74%	moderate
March Weather	12°C (54°F)	50 mm (2.0 inches)	71%	moderate
April Weather	14°C (57°F)	69 mm (2.7 inches)	69%	high
May Weather	18°C (64°F)	39 mm (1.5 inches)	66%	very high
June Weather	22°C (71°F)	32 mm (1.3 inches)	65%	very high
July Weather	25°C (77°F)	30 mm (1.2 inches)	64%	very high
August Weather	25°C (77°F)	44 mm (1.7 inches)	64%	very high
September Weather	22°C (72°F)	98 mm (3.8 inches)	68%	high
October Weather	18°C (65°F)	109 mm (4.3 inches)	77%	high
November Weather	13°C (57°F)	72 mm (2.8 inches)	79%	moderate
December Weather	11°C (52°F)	28 mm (1.1 inches)	79%	low