September Weather in Rosas, Colombia

Last updated: August 23, 2025

In September, the average temperature in Rosas, Colombia is a pleasant 18°C (65°F). Temperatures can range from a minimum of 11°C (53°F) to a maximum of 27°C (81°F). Expect significant rainfall, with an average precipitation of 576 mm (22.7 in) spread over 30 days. Additionally, the average humidity level sits at a comfortable 69%, creating a vibrant and refreshing atmosphere throughout the month.

September Temperature in Rosas

In September in Rosas, the average temperature is 18°C (65°F). Maximum temperatures can reach 27°C (81°F), while minimums can drop as low as 11°C (53°F). This mild climate makes it an ideal destination for travelers looking to explore comfortably.

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

The chart illustrates September temperature patterns in Rosas, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rosas, September typically has an average temperature of 18°C (65°F), with highs reaching up to 27°C (81°F) and lows dropping to around 11°C (53°F).

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

September Precipitation in Rosas

In Rosas in September, the total precipitation amount is 576 mm (22.7 in) over the course of 30 days.

September Precipitation Trends in Rosas

The chart displays monthly precipitation patterns in Rosas, 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 Rosas, September typically receives around 576 mm (22.7 inches) of precipitation spread over approximately 30 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 Rosas

In Rosas in September humidity is 69%. With an average temperature of 18°C (65°F), this humidity feels like a warm, damp blanket around you, making travel less comfortable and causing you to feel sticky and fatigued more quickly.

September Average Humidity in Rosas

This chart illustrates the average monthly humidity levels in Rosas, 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 Rosas is approximately 69%, 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 Rosas

In Rosas in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Rosas.

Maximum UV Index Levels in Rosas for September

The chart shows the monthly maximum UV Index (UVI) for Rosas 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 Rosas typically reaches 15, which falls under the extreme exposure category.

Data source: Rosas 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 Rosas Compares to Other Months

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

This table compares monthly weather conditions in Rosas, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	18°C (65°F)	407 mm (16.0 inches)	74%	extreme
February Weather	18°C (65°F)	460 mm (18.1 inches)	71%	extreme
March Weather	18°C (65°F)	645 mm (25.4 inches)	78%	extreme
April Weather	18°C (65°F)	707 mm (27.8 inches)	81%	extreme
May Weather	18°C (65°F)	835 mm (32.9 inches)	88%	extreme
June Weather	18°C (65°F)	736 mm (29.0 inches)	85%	extreme
July Weather	19°C (66°F)	649 mm (25.6 inches)	75%	extreme
August Weather	19°C (66°F)	474 mm (18.7 inches)	64%	extreme
September Weather	18°C (65°F)	576 mm (22.7 inches)	69%	extreme
October Weather	18°C (65°F)	658 mm (25.9 inches)	80%	extreme
November Weather	18°C (65°F)	550 mm (21.6 inches)	85%	extreme
December Weather	18°C (65°F)	583 mm (22.9 inches)	82%	extreme