September Weather in El Retorno, Colombia

Last updated: August 23, 2025

In El Retorno, Colombia, the average temperature in September hovers around 25°C (78°F), making it a pleasant time of year. Temperatures can dip to a minimum of 20°C (69°F) and soar up to a maximum of 33°C (91°F). Visitors can expect an average precipitation of 161 mm (6.3 in) spread over 23 days, and with an average humidity of 57%, it's a good idea to embrace the local climate while enjoying all that this vibrant destination has to offer!

September Temperature in El Retorno

In September in El Retorno, the average temperature is 25°C (78°F), with maximums reaching 33°C (91°F) and minimums dropping to as low as 20°C (69°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in El Retorno: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in El Retorno, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Retorno, September typically has an average temperature of 25°C (78°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in El Retorno

In El Retorno in September, the total precipitation amount is 161 mm (6.3 in) distributed over 23 days.

September Precipitation Trends in El Retorno

The chart displays monthly precipitation patterns in El Retorno, 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 El Retorno, September typically receives around 161 mm (6.3 inches) of precipitation spread over approximately 23 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 El Retorno

In El Retorno in September humidity is 57%. With an average temperature of 25°C (78°F), this humidity feels like a warm embrace, making it comfortable for outdoor activities but slightly sticky, urging travelers to stay hydrated and seek shade during the midday sun.

September Average Humidity in El Retorno

This chart illustrates the average monthly humidity levels in El Retorno, 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 El Retorno is approximately 57%, 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 El Retorno

In El Retorno in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in El Retorno, you can check here.

Maximum UV Index Levels in El Retorno for September

The chart shows the monthly maximum UV Index (UVI) for El Retorno 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 El Retorno typically reaches 14, which falls under the extreme exposure category.

Data source: El Retorno 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 El Retorno Compares to Other Months

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

This table compares monthly weather conditions in El Retorno, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	86 mm (3.4 inches)	49%	extreme
February Weather	27°C (81°F)	67 mm (2.6 inches)	46%	extreme
March Weather	26°C (78°F)	195 mm (7.7 inches)	52%	extreme
April Weather	25°C (78°F)	275 mm (10.8 inches)	73%	extreme
May Weather	25°C (77°F)	356 mm (14.0 inches)	90%	extreme
June Weather	24°C (76°F)	356 mm (14.0 inches)	93%	extreme
July Weather	24°C (75°F)	344 mm (13.6 inches)	87%	extreme
August Weather	25°C (76°F)	170 mm (6.7 inches)	67%	extreme
September Weather	25°C (78°F)	161 mm (6.3 inches)	57%	extreme
October Weather	25°C (78°F)	229 mm (9.0 inches)	56%	extreme
November Weather	25°C (78°F)	200 mm (7.9 inches)	68%	extreme
December Weather	26°C (78°F)	106 mm (4.2 inches)	70%	extreme