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September Weather in Retiro, Colombia

Last updated: August 23, 2025

In September, the average temperature in Retiro, Colombia hovers around 18°C (65°F). Expect daily variations, with minimums dipping to 11°C (52°F) and maximums soaring up to 30°C (86°F). This month also brings 242 mm (9.5 in) of precipitation over about 25 days, contributing to an average humidity of 80%. Prepare for a humid and occasionally rainy experience!

September Temperature in Retiro

In September in Retiro, the average temperature is 18°C (65°F). Maximum temperatures can reach up to 30°C (86°F), while minimum temperatures can drop as low as 11°C (52°F). It's a great time for travelers to enjoy mild weather, making outdoor activities and exploration quite pleasant.

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

The chart illustrates September temperature patterns in Retiro, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Retiro, September typically has an average temperature of 18°C (65°F), with highs reaching up to 30°C (86°F) and lows dropping to around 11°C (52°F).
JanFebMarAprMayJunJulAugSepOctNovDec646464656565656665646464
Data source: Temperature data for Retiro generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Retiro

In Retiro in September, the total precipitation amount is 242 mm (9.5 in) spread over 25 days.

September Precipitation Trends in Retiro

The chart displays monthly precipitation patterns in Retiro, 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 Retiro, September typically receives around 242 mm (9.5 inches) of precipitation spread over approximately 25 days.
JanFebMarAprMayJunJulAugSepOctNovDec105177292293367216156198242312267136
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Retiro

In Retiro in September, humidity is 80%. With an average temperature of 18°C (65°F), this humidity feels like wandering through a warm, damp blanket, making every step slightly heavy and resulting in a constant sheen of sweat, which can be both refreshing and exhausting for travelers.

September Average Humidity in Retiro

This chart illustrates the average monthly humidity levels in Retiro, 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 Retiro is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%77%80%83%88%87%85%80%80%85%87%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Retiro

In Retiro 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 Retiro, you can check here.

Maximum UV Index Levels in Retiro for September

The chart shows the monthly maximum UV Index (UVI) for Retiro 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 Retiro typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131516161514141414141312
Data source: Retiro 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 Retiro Compares to Other Months

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

This table compares monthly weather conditions in Retiro, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather18°C (64°F)105 mm (4.1 inches)78%extreme
February Weather18°C (65°F)177 mm (7.0 inches)77%extreme
March Weather18°C (65°F)292 mm (11.5 inches)80%extreme
April Weather18°C (65°F)293 mm (11.5 inches)83%extreme
May Weather18°C (65°F)367 mm (14.4 inches)87%extreme
June Weather18°C (65°F)216 mm (8.5 inches)87%extreme
July Weather19°C (66°F)156 mm (6.1 inches)85%extreme
August Weather19°C (66°F)198 mm (7.8 inches)80%extreme
September Weather18°C (65°F)242 mm (9.5 inches)80%extreme
October Weather18°C (64°F)312 mm (12.3 inches)85%extreme
November Weather18°C (64°F)267 mm (10.5 inches)87%extreme
December Weather18°C (65°F)136 mm (5.4 inches)83%extreme

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