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September Weather in Puerto Rico, Colombia

Last updated: August 23, 2025

In September, the average temperature in Puerto Rico, Colombia is a pleasant 21°C (69°F). You can expect a minimum of 14°C (57°F) and a maximum of 28°C (82°F) during this time. Be prepared for some rain, as the area receives an average precipitation of 89 mm (3.5 in) over 16 days. With an average humidity of 53%, the climate remains quite comfortable for outdoor activities.

September Temperature in Puerto Rico

In September in Puerto Rico, the average temperature is 21°C (69°F), with maximums reaching up to 28°C (82°F) and minimums dropping to as low as 14°C (57°F). This pleasant weather makes it an ideal time for exploring and enjoying outdoor activities in Puerto Rico.

September Weather in Puerto Rico: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Puerto Rico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Puerto Rico, September typically has an average temperature of 21°C (69°F), with highs reaching up to 28°C (82°F) and lows dropping to around 14°C (57°F).
JanFebMarAprMayJunJulAugSepOctNovDec697169696867666869697069
Data source: Temperature data for Puerto Rico 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 Puerto Rico

In Puerto Rico in September, the precipitation amount is 89 mm (3.5 in) over the course of 16 days.

September Precipitation Trends in Puerto Rico

The chart displays monthly precipitation patterns in Puerto Rico, 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 Puerto Rico, September typically receives around 89 mm (3.5 inches) of precipitation spread over approximately 16 days.
JanFebMarAprMayJunJulAugSepOctNovDec10310222820121924521210889161233112
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in Puerto Rico

In Puerto Rico in September, humidity is 53%. With an average temperature of 21°C (69°F), this humidity feels like a refreshing embrace; perfect for exploring the sights without feeling too sticky or uncomfortable.

September Average Humidity in Puerto Rico

This chart illustrates the average monthly humidity levels in Puerto Rico, 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 Puerto Rico is approximately 53%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%66%74%83%93%93%84%61%53%67%78%85%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Puerto Rico

In Puerto Rico in September, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Puerto Rico.

Maximum UV Index Levels in Puerto Rico for September

The chart shows the monthly maximum UV Index (UVI) for Puerto Rico 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 Puerto Rico typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec141517171513141515151413
Data source: Puerto Rico 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 Puerto Rico Compares to Other Months

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

This table compares monthly weather conditions in Puerto Rico, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather21°C (70°F)103 mm (4.0 inches)72%extreme
February Weather22°C (71°F)102 mm (4.0 inches)66%extreme
March Weather21°C (70°F)228 mm (9.0 inches)74%extreme
April Weather21°C (69°F)201 mm (7.9 inches)83%extreme
May Weather20°C (68°F)219 mm (8.6 inches)93%extreme
June Weather20°C (68°F)245 mm (9.6 inches)93%extreme
July Weather19°C (67°F)212 mm (8.3 inches)84%extreme
August Weather20°C (68°F)108 mm (4.3 inches)61%extreme
September Weather21°C (69°F)89 mm (3.5 inches)53%extreme
October Weather21°C (69°F)161 mm (6.3 inches)67%extreme
November Weather21°C (70°F)233 mm (9.2 inches)78%extreme
December Weather21°C (70°F)112 mm (4.4 inches)85%extreme

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