September Weather in Cestona, Spain

Last updated: August 27, 2025

In Cestona, Spain, the average temperature in September hovers around 18°C (65°F), with a minimum dipping to 9°C (49°F) and a peak reaching 30°C (87°F). Expect a precipitation amount of 98 mm (3.9 in) spread over 13 days, contributing to an average humidity level of 75%. Get ready for a mix of warm days and refreshing showers!

September Temperature in Cestona

In September in Cestona, the average temperature is 18°C (65°F). Maximums can reach 30°C (87°F), while minimums can be as low as 9°C (49°F). Be prepared for a pleasant range of temperatures, making it an ideal time for outdoor adventures and exploration.

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

The chart illustrates September temperature patterns in Cestona, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cestona, September typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (87°F) and lows dropping to around 9°C (49°F).

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

September Precipitation in Cestona

In Cestona in September, the precipitation amount is 98 mm (3.9 in) over a span of 13 days.

September Precipitation Trends in Cestona

The chart displays monthly precipitation patterns in Cestona, 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 Cestona, September typically receives around 98 mm (3.9 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 Cestona

In Cestona in September, humidity is 75%. With an average temperature of 18°C (65°F), this humidity feels like a warm, enveloping blanket that can make outdoor exploration feel a bit stifling, potentially leading to discomfort during travel activities.

September Average Humidity in Cestona

This chart illustrates the average monthly humidity levels in Cestona, 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 Cestona is approximately 75%, 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 Cestona

In Cestona 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 Cestona.

Maximum UV Index Levels in Cestona for September

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

Data source: Cestona 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 Cestona Compares to Other Months

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

This table compares monthly weather conditions in Cestona, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	8°C (46°F)	144 mm (5.7 inches)	86%	low
February Weather	10°C (50°F)	129 mm (5.1 inches)	85%	moderate
March Weather	10°C (51°F)	116 mm (4.6 inches)	82%	high
April Weather	12°C (54°F)	107 mm (4.2 inches)	81%	high
May Weather	15°C (58°F)	115 mm (4.5 inches)	80%	very high
June Weather	17°C (64°F)	131 mm (5.1 inches)	81%	very high
July Weather	19°C (67°F)	91 mm (3.6 inches)	80%	very high
August Weather	20°C (68°F)	79 mm (3.1 inches)	76%	very high
September Weather	18°C (65°F)	98 mm (3.9 inches)	75%	high
October Weather	15°C (59°F)	133 mm (5.2 inches)	81%	moderate
November Weather	11°C (53°F)	190 mm (7.5 inches)	85%	moderate
December Weather	10°C (50°F)	211 mm (8.3 inches)	87%	low