September Weather in Las Mercedes, Honduras

Last updated: August 23, 2025

In September, the average temperature in Las Mercedes, Honduras is a pleasant 21°C (71°F). You'll experience mild lows of 14°C (58°F) and warm highs reaching 31°C (88°F). However, be prepared for some rain, as 281 mm (11.1 in) of precipitation can fall over 24 days, resulting in an average humidity of 71%. Enjoy the unique climate and bring your umbrella!

September Temperature in Las Mercedes

In September in Las Mercedes, the average temperature is 21°C (71°F). The maximum can reach 31°C (88°F), and the minimum can be as low as 14°C (58°F). This pleasant climate makes it an ideal time for travelers to explore and enjoy outdoor activities.

September Weather in Las Mercedes: Daily Temperature Highs, Lows, and Averages

The chart illustrates September temperature patterns in Las Mercedes, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Las Mercedes, September typically has an average temperature of 21°C (71°F), with highs reaching up to 31°C (88°F) and lows dropping to around 14°C (58°F).

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

September Precipitation in Las Mercedes

In Las Mercedes in September, the precipitation amount is 281 mm (11.1 in) spread over 24 days, indicating a significant frequency of rainy weather during that period.

September Precipitation Trends in Las Mercedes

The chart displays monthly precipitation patterns in Las Mercedes, 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 Las Mercedes, September typically receives around 281 mm (11.1 inches) of precipitation spread over approximately 24 days.

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

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

September Humidity in Las Mercedes

In Las Mercedes in September humidity is 71%. With an average temperature of 21°C (71°F), this humidity feels like a warm embrace, making it important for travelers to stay hydrated and seek shade during the hottest parts of the day.

September Average Humidity in Las Mercedes

This chart illustrates the average monthly humidity levels in Las Mercedes, 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 Las Mercedes is approximately 71%, 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 Las Mercedes

In Las Mercedes 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 Las Mercedes, you can check here.

Maximum UV Index Levels in Las Mercedes for September

The chart shows the monthly maximum UV Index (UVI) for Las Mercedes 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 Las Mercedes typically reaches 14, which falls under the extreme exposure category.

Data source: Las Mercedes 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 Las Mercedes Compares to Other Months

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

This table compares monthly weather conditions in Las Mercedes, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	19°C (66°F)	13 mm (0.5 inches)	80%	extreme
February Weather	20°C (68°F)	8 mm (0.3 inches)	72%	extreme
March Weather	21°C (70°F)	13 mm (0.5 inches)	61%	extreme
April Weather	23°C (73°F)	54 mm (2.1 inches)	53%	extreme
May Weather	22°C (72°F)	283 mm (11.1 inches)	51%	extreme
June Weather	21°C (71°F)	301 mm (11.8 inches)	52%	extreme
July Weather	22°C (71°F)	93 mm (3.6 inches)	58%	extreme
August Weather	21°C (71°F)	194 mm (7.7 inches)	63%	extreme
September Weather	21°C (71°F)	281 mm (11.1 inches)	71%	extreme
October Weather	21°C (69°F)	301 mm (11.8 inches)	79%	extreme
November Weather	19°C (67°F)	88 mm (3.5 inches)	79%	very high
December Weather	19°C (66°F)	16 mm (0.6 inches)	74%	very high