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September Weather in San Carlos, Bolivia

Last updated: August 22, 2025

In San Carlos, Bolivia, the average temperature in September is a pleasant 25°C (77°F). However, be prepared for fluctuations, as temperatures can dip to a minimum of 9°C (49°F) and soar to a maximum of 36°C (97°F). During this month, expect about 37 mm (1.5 in) of precipitation spread over 6 days, with an average humidity of 39%.

September Temperature in San Carlos

In September in San Carlos, the average temperature is 25°C (77°F). Maximums can reach 36°C (97°F), while minimums can dip as low as 9°C (49°F). It's advisable to pack for warm days and cooler nights when traveling during this time.

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 25°C (77°F), with highs reaching up to 36°C (97°F) and lows dropping to around 9°C (49°F).
JanFebMarAprMayJunJulAugSepOctNovDec787777757067687176787878
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 precipitation amount is 37 mm (1.5 in) over the course of 6 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 37 mm (1.5 inches) of precipitation spread over approximately 6 days.
JanFebMarAprMayJunJulAugSepOctNovDec2151851181059675585737112184245
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 39%. With an average temperature of 25°C (77°F), this humidity feels like a comfortable embrace, making it pleasant for traveling as you can enjoy the outdoors without feeling too sticky or weighed down.

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 39%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec86%84%86%86%79%64%47%40%39%39%70%83%
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.
JanFebMarAprMayJunJulAugSepOctNovDec1515141310891013151616
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 Weather25°C (78°F)215 mm (8.4 inches)86%extreme
February Weather25°C (78°F)185 mm (7.3 inches)84%extreme
March Weather25°C (77°F)118 mm (4.6 inches)85%extreme
April Weather24°C (75°F)105 mm (4.1 inches)86%extreme
May Weather21°C (71°F)96 mm (3.8 inches)79%very high
June Weather20°C (68°F)75 mm (3.0 inches)64%very high
July Weather20°C (68°F)58 mm (2.3 inches)47%very high
August Weather22°C (71°F)57 mm (2.3 inches)40%very high
September Weather25°C (77°F)37 mm (1.5 inches)39%extreme
October Weather26°C (78°F)112 mm (4.4 inches)39%extreme
November Weather26°C (78°F)184 mm (7.2 inches)70%extreme
December Weather25°C (78°F)245 mm (9.7 inches)83%extreme

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