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September Weather in San Carlos, Colombia

Last updated: August 23, 2025

In September, the average temperature in San Carlos, Colombia rises to a warm 28°C (82°F), with lows reaching 23°C (74°F) and highs soaring to 34°C (94°F). Expect about 179 mm (7.0 in) of precipitation spread over 26 days, coupled with a high average humidity of 87%. Whether you enjoy the warmth or the rain, this month offers a unique climate experience!

September Temperature in San Carlos

In September in San Carlos, the average temperature is 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F). This pleasant weather makes it an ideal time for outdoor activities and sightseeing, attracting travelers seeking warmth and sunshine.

September Weather in San Carlos: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Carlos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Carlos, September typically has an average temperature of 28°C (82°F), with highs reaching up to 34°C (94°F) and lows dropping to around 23°C (74°F).
JanFebMarAprMayJunJulAugSepOctNovDec838585848382828282818182
Data source: Temperature data for San Carlos 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 San Carlos

In San Carlos in September, the total precipitation amount is 179 mm (7.0 in) spread over 26 days.

September Precipitation Trends in San Carlos

The chart displays monthly precipitation patterns in San Carlos, 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 San Carlos, September typically receives around 179 mm (7.0 inches) of precipitation spread over approximately 26 days.
JanFebMarAprMayJunJulAugSepOctNovDec2584613522320018216917917213948
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Carlos

In San Carlos in September humidity is 87%. With an average temperature of 28°C (82°F), this humidity feels like a warm, thick blanket wrapping around you, making travel challenging as you navigate the air's heavy moisture.

September Average Humidity in San Carlos

This chart illustrates the average monthly humidity levels in San Carlos, 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 San Carlos is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec70%67%65%67%79%87%88%87%87%86%86%80%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Carlos

In San Carlos 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 San Carlos.

Maximum UV Index Levels in San Carlos for September

The chart shows the monthly maximum UV Index (UVI) for San Carlos 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 San Carlos typically reaches 13, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec111214151413131313131110
Data source: San Carlos 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 San Carlos Compares to Other Months

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

This table compares monthly weather conditions in San Carlos, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather28°C (83°F)25 mm (1.0 inches)70%extreme
February Weather30°C (85°F)8 mm (0.3 inches)67%extreme
March Weather29°C (85°F)46 mm (1.8 inches)65%extreme
April Weather29°C (84°F)135 mm (5.3 inches)67%extreme
May Weather28°C (83°F)223 mm (8.8 inches)79%extreme
June Weather28°C (83°F)200 mm (7.9 inches)87%extreme
July Weather28°C (83°F)182 mm (7.2 inches)88%extreme
August Weather28°C (82°F)169 mm (6.7 inches)87%extreme
September Weather28°C (82°F)179 mm (7.0 inches)87%extreme
October Weather27°C (81°F)171 mm (6.8 inches)86%extreme
November Weather27°C (82°F)139 mm (5.5 inches)86%extreme
December Weather28°C (83°F)48 mm (1.9 inches)80%very high

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