September Weather in Usurbil, Spain

Last updated: August 27, 2025

In Usurbil, Spain, the average temperature in September is a comfortable 18°C (65°F). You can expect a range from a minimum of 9°C (48°F) to a maximum of 29°C (85°F). During this month, 97 mm (3.8 inches) of precipitation typically falls over 12 days, and the average humidity is around 75%. Be prepared for a mix of warmth and moisture while enjoying all that the season has to offer!

September Temperature in Usurbil

In September in Usurbil, the average temperature is 18°C (65°F). The maximum can reach 29°C (85°F), and the minimum can be as low as 9°C (48°F). This pleasant climate makes Usurbil an ideal destination for travelers seeking a comfortable getaway.

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

The chart illustrates September temperature patterns in Usurbil, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Usurbil, September typically has an average temperature of 18°C (65°F), with highs reaching up to 29°C (85°F) and lows dropping to around 9°C (48°F).

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

September Precipitation in Usurbil

In Usurbil in September, the precipitation amount is 97 mm (3.8 in) spread over 12 days.

September Precipitation Trends in Usurbil

The chart displays monthly precipitation patterns in Usurbil, 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 Usurbil, September typically receives around 97 mm (3.8 inches) of precipitation spread over approximately 12 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 Usurbil

In Usurbil 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 Usurbil

This chart illustrates the average monthly humidity levels in Usurbil, 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 Usurbil 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 Usurbil

In Usurbil 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 Usurbil.

Maximum UV Index Levels in Usurbil for September

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

Data source: Usurbil 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 Usurbil Compares to Other Months

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

This table compares monthly weather conditions in Usurbil, 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 (45°F)	147 mm (5.8 inches)	86%	low
February Weather	9°C (49°F)	130 mm (5.1 inches)	85%	moderate
March Weather	10°C (51°F)	124 mm (4.9 inches)	82%	high
April Weather	12°C (54°F)	108 mm (4.3 inches)	81%	high
May Weather	14°C (58°F)	120 mm (4.7 inches)	80%	very high
June Weather	17°C (63°F)	135 mm (5.3 inches)	81%	very high
July Weather	19°C (67°F)	93 mm (3.7 inches)	80%	very high
August Weather	20°C (67°F)	95 mm (3.7 inches)	76%	very high
September Weather	18°C (65°F)	97 mm (3.8 inches)	75%	high
October Weather	15°C (59°F)	135 mm (5.3 inches)	81%	moderate
November Weather	11°C (52°F)	190 mm (7.5 inches)	85%	moderate
December Weather	9°C (49°F)	217 mm (8.5 inches)	87%	low