September Weather in Rio Viejo, Colombia

Last updated: August 23, 2025

In Rio Viejo, Colombia, the average temperature in September hovers around 27°C (81°F). Expect a comfortable minimum of 22°C (72°F) and an occasional peak of 34°C (94°F). However, be prepared for significant rainfall, with about 363 mm (14.3 in) over approximately 24 days. To top it off, the average humidity tends to be a high 83%, making the atmosphere feel quite tropical.

September Temperature in Rio Viejo

In September in Rio Viejo, the average temperature is 27°C (81°F), with maximums reaching 34°C (94°F) and minimums dipping to 22°C (72°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Rio Viejo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Viejo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Viejo, September typically has an average temperature of 27°C (81°F), with highs reaching up to 34°C (94°F) and lows dropping to around 22°C (72°F).

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

September Precipitation in Rio Viejo

In Rio Viejo in September, the total precipitation amount is 363 mm (14.3 in) over the course of 24 days.

September Precipitation Trends in Rio Viejo

The chart displays monthly precipitation patterns in Rio Viejo, 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 Rio Viejo, September typically receives around 363 mm (14.3 inches) of precipitation spread over approximately 24 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 Rio Viejo

In Rio Viejo in September humidity is 83%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket enveloping you, making sightseeing and outdoor activities feel more exhausting and requiring frequent breaks to relax in the shade or cool off.

September Average Humidity in Rio Viejo

This chart illustrates the average monthly humidity levels in Rio Viejo, 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 Rio Viejo is approximately 83%, 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 Rio Viejo

In Rio Viejo in September, the maximum UV index reaches 13, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take protective measures. For detailed information, you can check the Hourly UV Index in Rio Viejo.

Maximum UV Index Levels in Rio Viejo for September

The chart shows the monthly maximum UV Index (UVI) for Rio Viejo 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 Rio Viejo typically reaches 13, which falls under the extreme exposure category.

Data source: Rio Viejo 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 Rio Viejo Compares to Other Months

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

This table compares monthly weather conditions in Rio Viejo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	28°C (82°F)	68 mm (2.7 inches)	51%	extreme
February Weather	29°C (85°F)	7 mm (0.3 inches)	47%	extreme
March Weather	29°C (84°F)	98 mm (3.9 inches)	45%	extreme
April Weather	27°C (82°F)	313 mm (12.3 inches)	46%	extreme
May Weather	27°C (81°F)	516 mm (20.3 inches)	62%	extreme
June Weather	27°C (81°F)	386 mm (15.2 inches)	81%	extreme
July Weather	27°C (82°F)	283 mm (11.1 inches)	87%	extreme
August Weather	27°C (81°F)	329 mm (13.0 inches)	83%	extreme
September Weather	27°C (81°F)	363 mm (14.3 inches)	83%	extreme
October Weather	26°C (80°F)	354 mm (14.0 inches)	85%	extreme
November Weather	26°C (80°F)	279 mm (11.0 inches)	83%	extreme
December Weather	27°C (81°F)	92 mm (3.6 inches)	65%	extreme