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September Weather in San Bartolo, Panama

Last updated: August 27, 2025

In September, the average temperature in San Bartolo, Panama hovers around 25°C (77°F), providing a pleasant climate. Expect minimum temperatures of 21°C (69°F), while the maximum can reach up to 33°C (91°F). Be prepared for ample rainfall, with a total of 334 mm (13.2 in) spread across 29 days. The air is quite humid, with an average humidity level of 87%, making it essential to stay hydrated.

September Temperature in San Bartolo

In September in San Bartolo, the average temperature is 25°C (77°F). Maximums can reach 33°C (91°F) and minimums can be as low as 21°C (69°F). This comfortable climate makes San Bartolo an ideal destination for travelers looking to enjoy warm and pleasant weather.

September Weather in San Bartolo: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in San Bartolo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Bartolo, September typically has an average temperature of 25°C (77°F), with highs reaching up to 33°C (91°F) and lows dropping to around 21°C (69°F).
JanFebMarAprMayJunJulAugSepOctNovDec787980807878787777777678
Data source: Temperature data for San Bartolo 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 Bartolo

In San Bartolo in September, the precipitation amount is 334 mm (13.2 in) spread across 29 days.

September Precipitation Trends in San Bartolo

The chart displays monthly precipitation patterns in San Bartolo, 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 Bartolo, September typically receives around 334 mm (13.2 inches) of precipitation spread over approximately 29 days.
JanFebMarAprMayJunJulAugSepOctNovDec32769632229631029433436636080
Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.
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September Humidity in San Bartolo

In San Bartolo in September, humidity is 87%. With an average temperature of 25°C (77°F), this humidity feels like a thick, warm blanket enveloping you, making travel a challenge as sweat clings to your skin and the air feels heavy and stifling.

September Average Humidity in San Bartolo

This chart illustrates the average monthly humidity levels in San Bartolo, 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 Bartolo is approximately 87%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec72%71%69%70%73%90%89%87%87%86%86%79%
Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in San Bartolo

In San Bartolo 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 Bartolo, you can check here.

Maximum UV Index Levels in San Bartolo for September

The chart shows the monthly maximum UV Index (UVI) for San Bartolo 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 Bartolo typically reaches 14, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec121314151513141314141211
Data source: San Bartolo 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 Bartolo Compares to Other Months

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

This table compares monthly weather conditions in San Bartolo, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather25°C (78°F)32 mm (1.3 inches)72%extreme
February Weather26°C (79°F)7 mm (0.3 inches)71%extreme
March Weather27°C (80°F)6 mm (0.3 inches)69%extreme
April Weather27°C (80°F)96 mm (3.8 inches)70%extreme
May Weather26°C (78°F)322 mm (12.7 inches)73%extreme
June Weather25°C (78°F)296 mm (11.7 inches)90%extreme
July Weather25°C (78°F)310 mm (12.2 inches)88%extreme
August Weather25°C (78°F)294 mm (11.6 inches)87%extreme
September Weather25°C (77°F)334 mm (13.2 inches)87%extreme
October Weather25°C (77°F)366 mm (14.4 inches)86%extreme
November Weather25°C (77°F)360 mm (14.2 inches)86%extreme
December Weather25°C (78°F)80 mm (3.1 inches)79%extreme

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