September Weather in Columbia, United States

Last updated: June 24, 2025

In Columbia, United States during September, the average temperature hovers around 25°C (77°F). However, you can expect a minimum of 11°C (51°F) and a maximum of 36°C (98°F). With an average precipitation of 100 mm (4.0 in) spread over 8 days, the air tends to be quite humid, with levels reaching 83%.

September Temperature in Columbia

In September, in Columbia, the average temperature is 25°C (77°F). The maximum can reach 36°C (98°F), and the minimum can be as low as 11°C (51°F). This climate makes Columbia a great destination for travelers seeking warm weather and outdoor activities.

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 25°C (77°F), with highs reaching up to 36°C (98°F) and lows dropping to around 11°C (51°F).

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

September Precipitation in Columbia

In Columbia in September, the precipitation amount is 100 mm (4.0 in) distributed over a span of 8 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 100 mm (4.0 inches) of precipitation spread over approximately 8 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Columbia

In Columbia in September humidity is 83%. With an average temperature of 25°C (77°F), this humidity feels like a warm, enveloping blanket, making it essential for travelers to stay hydrated and seek shade to enjoy their adventures comfortably.

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 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 Columbia

In Columbia in September, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For 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 9, which falls under the very high exposure category.

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.
	Temperature	Precipitation	Humidity	UV
January Weather	9°C (48°F)	86 mm (3.4 inches)	86%	moderate
February Weather	12°C (53°F)	103 mm (4.1 inches)	81%	high
March Weather	14°C (58°F)	75 mm (2.9 inches)	81%	very high
April Weather	18°C (65°F)	108 mm (4.2 inches)	79%	very high
May Weather	23°C (74°F)	105 mm (4.1 inches)	75%	very high
June Weather	26°C (79°F)	110 mm (4.3 inches)	75%	extreme
July Weather	27°C (82°F)	139 mm (5.5 inches)	80%	extreme
August Weather	27°C (80°F)	134 mm (5.3 inches)	81%	extreme
September Weather	25°C (77°F)	100 mm (4.0 inches)	83%	very high
October Weather	20°C (69°F)	73 mm (2.9 inches)	78%	very high
November Weather	13°C (55°F)	66 mm (2.6 inches)	85%	high
December Weather	10°C (51°F)	130 mm (5.1 inches)	87%	moderate