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September Weather in El Rosario, Colombia

Last updated: August 23, 2025

In September, the average temperature in El Rosario, Colombia is a pleasant 23°C (73°F), with daily fluctuations ranging from a cool 15°C (60°F) to a warm 35°C (96°F). Expect around 237 mm (9.3 in) of precipitation over 23 days, contributing to an average humidity of 53%. Be prepared for a mix of sunny days and refreshing showers!

September Temperature in El Rosario

In September in El Rosario, the average temperature is 23°C (73°F). The maximum can reach 35°C (96°F), while the minimum can be as low as 15°C (60°F). This makes it a perfect time for travelers seeking warm weather and sunshine.

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

The chart illustrates September temperature patterns in El Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Rosario, September typically has an average temperature of 23°C (73°F), with highs reaching up to 35°C (96°F) and lows dropping to around 15°C (60°F).
JanFebMarAprMayJunJulAugSepOctNovDec707171717172737473717070
Data source: Temperature data for El Rosario 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 El Rosario

In El Rosario in September, the precipitation amount is 237 mm (9.3 in) spread over 23 days.

September Precipitation Trends in El Rosario

The chart displays monthly precipitation patterns in El Rosario, 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 Rosario, September typically receives around 237 mm (9.3 inches) of precipitation spread over approximately 23 days.
JanFebMarAprMayJunJulAugSepOctNovDec352376442489501365190162237420439464
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in El Rosario

In El Rosario in September, humidity is 53%. With an average temperature of 23°C (73°F), this humidity feels like a comfortable embrace, making it ideal for leisurely strolls or exploring the sights without feeling overwhelmed.

September Average Humidity in El Rosario

This chart illustrates the average monthly humidity levels in El Rosario, 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 Rosario is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%66%74%83%93%93%84%61%53%67%78%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in El Rosario

In El Rosario 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 El Rosario.

Maximum UV Index Levels in El Rosario for September

The chart shows the monthly maximum UV Index (UVI) for El Rosario 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 Rosario typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec161618181614141515161413
Data source: El Rosario 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 Rosario Compares to Other Months

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

This table compares monthly weather conditions in El Rosario, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (71°F)352 mm (13.8 inches)72%extreme
February Weather21°C (71°F)375 mm (14.8 inches)66%extreme
March Weather21°C (71°F)442 mm (17.4 inches)74%extreme
April Weather22°C (71°F)489 mm (19.3 inches)83%extreme
May Weather22°C (71°F)501 mm (19.7 inches)93%extreme
June Weather22°C (72°F)365 mm (14.4 inches)93%extreme
July Weather23°C (74°F)190 mm (7.5 inches)84%extreme
August Weather23°C (74°F)162 mm (6.4 inches)61%extreme
September Weather23°C (73°F)237 mm (9.3 inches)53%extreme
October Weather22°C (71°F)420 mm (16.5 inches)67%extreme
November Weather21°C (70°F)439 mm (17.3 inches)78%extreme
December Weather21°C (70°F)464 mm (18.3 inches)85%extreme

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