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September Weather in Valparaiso, Colombia

Last updated: August 23, 2025

In September, the average temperature in Valparaiso, Colombia is a comfortable 18°C (64°F), with temperatures ranging from a cool 10°C (50°F) to a warm 28°C (83°F). However, be prepared for some rain, as the area receives about 326 mm (12.8 in) of precipitation over 27 days. With an average humidity of 80%, it's advisable to embrace the tropical feel while exploring this stunning destination!

September Temperature in Valparaiso

In September in Valparaiso, the average temperature is 18°C (64°F), with a maximum reaching 28°C (83°F) and a minimum dropping as low as 10°C (50°F). This pleasant weather makes Valparaiso an ideal destination for travelers looking to enjoy mild and comfortable temperatures.

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

The chart illustrates September temperature patterns in Valparaiso, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Valparaiso, September typically has an average temperature of 18°C (64°F), with highs reaching up to 28°C (83°F) and lows dropping to around 10°C (50°F).
JanFebMarAprMayJunJulAugSepOctNovDec636463636463646464636363
Data source: Temperature data for Valparaiso 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 Valparaiso

In Valparaiso in September, the total precipitation amount is 326 mm (12.8 in) over the course of 27 days.

September Precipitation Trends in Valparaiso

The chart displays monthly precipitation patterns in Valparaiso, 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 Valparaiso, September typically receives around 326 mm (12.8 inches) of precipitation spread over approximately 27 days.
JanFebMarAprMayJunJulAugSepOctNovDec178314510445522339246263326468454286
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Valparaiso

In Valparaiso in September humidity is 80%. With an average temperature of 18°C (64°F), this humidity feels like a warm, damp blanket wrapping around you, making travel a bit more exhausting as the air thickens and the heat clings to your skin.

September Average Humidity in Valparaiso

This chart illustrates the average monthly humidity levels in Valparaiso, 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 Valparaiso is approximately 80%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%77%80%83%88%87%85%80%80%85%87%83%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Valparaiso

In Valparaiso 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 Valparaiso, you can check here.

Maximum UV Index Levels in Valparaiso for September

The chart shows the monthly maximum UV Index (UVI) for Valparaiso 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 Valparaiso typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec131516161514141414141312
Data source: Valparaiso 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 Valparaiso Compares to Other Months

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

This table compares monthly weather conditions in Valparaiso, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather17°C (63°F)178 mm (7.0 inches)78%extreme
February Weather18°C (64°F)314 mm (12.4 inches)77%extreme
March Weather17°C (63°F)510 mm (20.1 inches)80%extreme
April Weather17°C (64°F)445 mm (17.5 inches)83%extreme
May Weather18°C (64°F)522 mm (20.5 inches)87%extreme
June Weather17°C (64°F)339 mm (13.4 inches)87%extreme
July Weather18°C (64°F)246 mm (9.7 inches)85%extreme
August Weather18°C (64°F)263 mm (10.3 inches)80%extreme
September Weather18°C (64°F)326 mm (12.8 inches)80%extreme
October Weather17°C (63°F)468 mm (18.4 inches)85%extreme
November Weather17°C (63°F)454 mm (17.9 inches)87%extreme
December Weather17°C (63°F)286 mm (11.3 inches)83%extreme

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