nomadseason

September Weather in Columbia, United States

Last updated: June 24, 2025

In September, the average temperature in Columbia, United States hovers around 26°C (79°F). Temperatures can range from a cool 11°C (51°F) to a sweltering 38°C (101°F). Expect 110 mm (4.3 in) of precipitation spread over 11 days, with an average humidity level of 80%, adding to the tropical feel of the region.

September Temperature in Columbia

In September in Columbia, the average temperature is 26°C (79°F), with maximums reaching 38°C (101°F) and minimums dropping as low as 11°C (51°F). This pleasant weather makes Columbia an ideal destination for travelers looking to enjoy both warm days and cooler evenings.

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

The chart illustrates September temperature patterns in Columbia, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Columbia, September typically has an average temperature of 26°C (79°F), with highs reaching up to 38°C (101°F) and lows dropping to around 11°C (51°F).
JanFebMarAprMayJunJulAugSepOctNovDec505662667579818078715754
Data source: Temperature data for Columbia generated using information from the Copernicus Climate Change Service.
Choose your preferred temperature unit
The average of daily temperatures (24 hours) calculated across all days in the month.

September Precipitation in Columbia

In Columbia in September, the precipitation amount is 110 mm (4.3 in) spread over 11 days.

September Precipitation Trends in Columbia

The chart displays monthly precipitation patterns in Columbia, 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 Columbia, September typically receives around 110 mm (4.3 inches) of precipitation spread over approximately 11 days.
JanFebMarAprMayJunJulAugSepOctNovDec11812010713915416514718611010286146
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
Choose your preferred precipitation unit

September Humidity in Columbia

In Columbia in September humidity is 80%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket, making outdoor activities feel sticky and exhausting, potentially dampening the travel experience and necessitating frequent breaks to cool down and hydrate.

September Average Humidity in Columbia

This chart illustrates the average monthly humidity levels in Columbia, 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 Columbia is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec82%80%80%78%73%71%79%78%80%76%83%87%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Columbia

In Columbia in September, the maximum UV index reaches 10, which corresponds to a very high Exposure Category. With a time to burn of just 15 minutes, it's crucial to take precautions. For more detailed information, you can check the Hourly UV Index in Columbia.

Maximum UV Index Levels in Columbia for September

The chart shows the monthly maximum UV Index (UVI) for Columbia 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 Columbia typically reaches 10, which falls under the very high exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec589111112111110864
Data source: Columbia 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 Columbia Compares to Other Months

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

This table compares monthly weather conditions in Columbia, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather10°C (51°F)118 mm (4.6 inches)82%moderate
February Weather13°C (56°F)120 mm (4.7 inches)80%very high
March Weather17°C (63°F)107 mm (4.2 inches)80%very high
April Weather19°C (66°F)139 mm (5.5 inches)78%extreme
May Weather24°C (75°F)154 mm (6.1 inches)73%extreme
June Weather26°C (80°F)165 mm (6.5 inches)71%extreme
July Weather27°C (81°F)147 mm (5.8 inches)79%extreme
August Weather27°C (81°F)186 mm (7.3 inches)78%extreme
September Weather26°C (79°F)110 mm (4.3 inches)80%very high
October Weather22°C (71°F)102 mm (4.0 inches)76%very high
November Weather14°C (58°F)86 mm (3.4 inches)83%high
December Weather12°C (54°F)145 mm (5.7 inches)87%moderate

Compare Columbia's Climate with Cities Worldwide