August Weather in Cartagena, Chile

Last updated: August 22, 2025

In August, the average temperature in Cartagena, Chile hovers around 10°C (51°F), with a minimum of 3°C (37°F) and a maximum reaching 21°C (71°F). Be prepared for some rain, as 38 mm (1.5 in) of precipitation can be expected over about 4 days. With an average humidity level of 73%, you may feel the air a bit heavy, but the mild temperatures make for a pleasant experience overall!

August Temperature in Cartagena

In August in Cartagena, the average temperature is 10°C (51°F), with a maximum that can reach 21°C (71°F) and a minimum that can drop as low as 3°C (37°F). This makes it a great time to explore Cartagena, so be sure to dress in layers to comfortably enjoy the pleasant days and cooler evenings.

August Weather in Cartagena: Daily Temperature Highs, Lows, and Averages

The chart illustrates August temperature patterns in Cartagena, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Cartagena, August typically has an average temperature of 10°C (51°F), with highs reaching up to 21°C (71°F) and lows dropping to around 3°C (37°F).

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

August Precipitation in Cartagena

In Cartagena in August, the total precipitation amount is 38 mm (1.5 in) spread over the course of 4 days.

August Precipitation Trends in Cartagena

The chart displays monthly precipitation patterns in Cartagena, with values for each month alongside August’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how August’s conditions compare to those of other months. In Cartagena, August typically receives around 38 mm (1.5 inches) of precipitation spread over approximately 4 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

August Humidity in Cartagena

In Cartagena in August, humidity is 73%. With an average temperature of 10°C (51°F), this humidity feels like a chilly dampness that can make outdoor activities uncomfortable, causing your clothes to cling to your skin and a persistent coolness that seeps into your bones, which might deter long excursions without proper layering.

August Average Humidity in Cartagena

This chart illustrates the average monthly humidity levels in Cartagena, with August’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In August, average humidity in Cartagena is approximately 73%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for August generated using information from the Copernicus Climate Change Service.

August UV Index in Cartagena

In Cartagena in August, the maximum UV index is 6, which corresponds to a high Exposure Category. The time to burn is approximately 25 minutes. To find the hourly UV index in Cartagena, you can refer to this Hourly UV Index in Cartagena.

Maximum UV Index Levels in Cartagena for August

The chart shows the monthly maximum UV Index (UVI) for Cartagena in August, 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 August, the maximum UV index in Cartagena typically reaches 6, which falls under the high exposure category.

Data source: Cartagena August 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 August Weather in Cartagena Compares to Other Months

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

This table compares monthly weather conditions in Cartagena, showing how August’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	17°C (62°F)	6 mm (0.2 inches)	41%	extreme
February Weather	17°C (62°F)	3 mm (0.1 inches)	41%	extreme
March Weather	16°C (60°F)	3 mm (0.1 inches)	46%	extreme
April Weather	14°C (57°F)	9 mm (0.4 inches)	52%	very high
May Weather	12°C (54°F)	43 mm (1.7 inches)	64%	moderate
June Weather	11°C (51°F)	107 mm (4.2 inches)	71%	moderate
July Weather	10°C (50°F)	47 mm (1.9 inches)	75%	moderate
August Weather	10°C (51°F)	38 mm (1.5 inches)	73%	high
September Weather	11°C (53°F)	16 mm (0.6 inches)	56%	very high
October Weather	13°C (55°F)	14 mm (0.6 inches)	61%	extreme
November Weather	15°C (59°F)	3 mm (0.1 inches)	52%	extreme
December Weather	16°C (61°F)	1 mm (0.0 inches)	39%	extreme