September Weather in Londres, Argentina

Last updated: August 22, 2025

In September, the average temperature in Londres, Argentina is a pleasant 13°C (56°F). Expect a range where minimums can dip to -1°C (31°F), while maximums may soar up to 32°C (89°F). With an average precipitation of 11 mm (0.4 in) spread over just 3 days, you'll find the air filled with a comfortable 58% humidity.

September Temperature in Londres

In September in Londres, the average temperature is 13°C (56°F), with maximums reaching up to 32°C (89°F) and minimums dropping as low as -1°C (31°F). This variability makes it essential for travelers to pack accordingly for both warm and chilly conditions.

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

The chart illustrates September temperature patterns in Londres, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Londres, September typically has an average temperature of 13°C (56°F), with highs reaching up to 32°C (89°F) and lows dropping to around -1°C (31°F).

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

September Precipitation in Londres

In Londres in September, the precipitation amount is 11 mm (0.4 in) over the course of 3 days.

September Precipitation Trends in Londres

The chart displays monthly precipitation patterns in Londres, 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 Londres, September typically receives around 11 mm (0.4 inches) of precipitation spread over approximately 3 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 Londres

In Londres in September, humidity is 58%. With an average temperature of 13°C (56°F), this humidity feels like a refreshing coolness that invigorates the senses, making it pleasant for traveling as long as you dress in layers to adjust to the slight chill.

September Average Humidity in Londres

This chart illustrates the average monthly humidity levels in Londres, 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 Londres is approximately 58%, 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 Londres

In Londres in September, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in Londres.

Maximum UV Index Levels in Londres for September

The chart shows the monthly maximum UV Index (UVI) for Londres 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 Londres typically reaches 11, which falls under the extreme exposure category.

Data source: Londres 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 Londres Compares to Other Months

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

This table compares monthly weather conditions in Londres, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	20°C (68°F)	115 mm (4.5 inches)	79%	extreme
February Weather	18°C (65°F)	104 mm (4.1 inches)	81%	extreme
March Weather	17°C (62°F)	88 mm (3.5 inches)	83%	extreme
April Weather	15°C (59°F)	48 mm (1.9 inches)	85%	extreme
May Weather	11°C (53°F)	23 mm (0.9 inches)	75%	very high
June Weather	9°C (49°F)	10 mm (0.4 inches)	62%	high
July Weather	9°C (48°F)	5 mm (0.2 inches)	53%	high
August Weather	11°C (52°F)	6 mm (0.2 inches)	44%	very high
September Weather	13°C (56°F)	11 mm (0.4 inches)	58%	extreme
October Weather	16°C (61°F)	24 mm (0.9 inches)	54%	extreme
November Weather	18°C (65°F)	52 mm (2.0 inches)	66%	extreme
December Weather	19°C (66°F)	95 mm (3.8 inches)	74%	extreme