September Weather in Rio Grande, Panama

Last updated: August 27, 2025

In Rio Grande, Panama, the average temperature in September hovers around 26°C (79°F), providing a warm and inviting climate. Expect minimum temperatures to dip to 23°C (74°F), while daytime peaks can reach a balmy 32°C (89°F). Be prepared for significant rain, with 308 mm (12.1 in) of precipitation spread over 30 days. With an average humidity of 78%, it's a perfect time to embrace the tropical vibe!

September Temperature in Rio Grande

In September in Rio Grande, the average temperature is 26°C (79°F), with maximums reaching 32°C (89°F) and minimums dropping to as low as 23°C (74°F). This pleasant weather makes Rio Grande an ideal destination for travelers seeking warmth and comfort during this time of year.

September Weather in Rio Grande: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Rio Grande, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Rio Grande, September typically has an average temperature of 26°C (79°F), with highs reaching up to 32°C (89°F) and lows dropping to around 23°C (74°F).

Data source: Temperature data for Rio Grande generated using information from the Copernicus Climate Change Service.

September Precipitation in Rio Grande

In Rio Grande in September, the total precipitation amount is 308 mm (12.1 in) recorded over a span of 30 days.

September Precipitation Trends in Rio Grande

The chart displays monthly precipitation patterns in Rio Grande, 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 Rio Grande, September typically receives around 308 mm (12.1 inches) of precipitation spread over approximately 30 days.

Data source: Precipitation data for September generated using information from the Copernicus Climate Change Service.

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Millimeters (mm) Inches (in)

September Humidity in Rio Grande

In Rio Grande in September, humidity is 78%. With an average temperature of 26°C (79°F), this humidity feels like a heavy blanket wrapping around you, making travel a bit sluggish as the air hangs thick, leaving you in need of frequent breaks to hydrate and find shade.

September Average Humidity in Rio Grande

This chart illustrates the average monthly humidity levels in Rio Grande, 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 Rio Grande is approximately 78%, offering insight into how humid the weather typically is during this month.

Data source: Humidity data for September generated using information from the Copernicus Climate Change Service.

September UV Index in Rio Grande

In Rio Grande 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 Rio Grande.

Maximum UV Index Levels in Rio Grande for September

The chart shows the monthly maximum UV Index (UVI) for Rio Grande 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 Rio Grande typically reaches 13, which falls under the extreme exposure category.

Data source: Rio Grande 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 Rio Grande Compares to Other Months

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

This table compares monthly weather conditions in Rio Grande, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (80°F)	49 mm (1.9 inches)	76%	extreme
February Weather	27°C (81°F)	13 mm (0.5 inches)	75%	extreme
March Weather	28°C (83°F)	12 mm (0.5 inches)	74%	extreme
April Weather	28°C (82°F)	158 mm (6.2 inches)	76%	extreme
May Weather	27°C (81°F)	360 mm (14.2 inches)	78%	extreme
June Weather	27°C (80°F)	352 mm (13.9 inches)	83%	extreme
July Weather	26°C (80°F)	329 mm (12.9 inches)	79%	extreme
August Weather	26°C (80°F)	355 mm (14.0 inches)	79%	extreme
September Weather	26°C (79°F)	308 mm (12.1 inches)	78%	extreme
October Weather	26°C (79°F)	497 mm (19.6 inches)	77%	extreme
November Weather	26°C (79°F)	345 mm (13.6 inches)	79%	extreme
December Weather	26°C (80°F)	127 mm (5.0 inches)	79%	extreme