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September Weather in San Juan del Cesar, Colombia

Last updated: August 23, 2025

In September, the average temperature in San Juan del Cesar, Colombia is a pleasant 24°C (76°F). Expect temperatures to range from a cool 19°C (67°F) to a warm 33°C (92°F). With 245 mm (9.6 in) of precipitation spread over 29 days, be prepared for some wet weather. Humidity levels are high, averaging around 84%, making it a humid yet vibrant time to explore!

September Temperature in San Juan del Cesar

In September in San Juan del Cesar, the average temperature is 24°C (76°F). Maximums can reach 33°C (92°F), while minimums can be as low as 19°C (67°F). This mild climate makes San Juan del Cesar an ideal destination for travelers seeking pleasant weather and outdoor activities.

September Weather in San Juan del Cesar: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Juan del Cesar, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan del Cesar, September typically has an average temperature of 24°C (76°F), with highs reaching up to 33°C (92°F) and lows dropping to around 19°C (67°F).
JanFebMarAprMayJunJulAugSepOctNovDec737474757676767675747474
Data source: Temperature data for San Juan del Cesar 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 Juan del Cesar

In San Juan del Cesar in September, the precipitation amount is 245 mm (9.6 in) spread over a period of 29 days.

September Precipitation Trends in San Juan del Cesar

The chart displays monthly precipitation patterns in San Juan del Cesar, 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 Juan del Cesar, September typically receives around 245 mm (9.6 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec554913422538220820023524531722370
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Juan del Cesar

In San Juan del Cesar in September humidity is 84%. With an average temperature of 24°C (76°F), this humidity feels like a warm, damp embrace that can make outdoor activities feel sticky and uncomfortable, requiring frequent breaks in the shade and plenty of hydration for travelers.

September Average Humidity in San Juan del Cesar

This chart illustrates the average monthly humidity levels in San Juan del Cesar, 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 Juan del Cesar is approximately 84%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec65%65%64%64%65%77%85%85%84%82%79%69%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Juan del Cesar

In San Juan del Cesar in September, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in San Juan del Cesar, you can check here.

Maximum UV Index Levels in San Juan del Cesar for September

The chart shows the monthly maximum UV Index (UVI) for San Juan del Cesar 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 Juan del Cesar typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121315151513131414141111
Data source: San Juan del Cesar 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 Juan del Cesar Compares to Other Months

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

This table compares monthly weather conditions in San Juan del Cesar, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather23°C (73°F)55 mm (2.1 inches)65%extreme
February Weather23°C (74°F)49 mm (1.9 inches)65%extreme
March Weather23°C (74°F)134 mm (5.3 inches)64%extreme
April Weather24°C (75°F)225 mm (8.9 inches)64%extreme
May Weather24°C (76°F)382 mm (15.0 inches)65%extreme
June Weather24°C (76°F)208 mm (8.2 inches)77%extreme
July Weather25°C (76°F)200 mm (7.9 inches)85%extreme
August Weather25°C (76°F)235 mm (9.2 inches)85%extreme
September Weather24°C (76°F)245 mm (9.6 inches)84%extreme
October Weather24°C (75°F)317 mm (12.5 inches)82%extreme
November Weather23°C (74°F)223 mm (8.8 inches)79%extreme
December Weather23°C (74°F)70 mm (2.8 inches)69%extreme

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