September Weather in Monterrey, Honduras

Last updated: August 23, 2025

In September, the average temperature in Monterrey, Honduras hovers around 27°C (80°F), with lows of 20°C (69°F) and highs reaching 35°C (96°F). Expect a fair amount of rain, with 159 mm (6.3 in) spread over 25 days. The average humidity during this time is a comfortable 71%, making it a notable time to visit this destination!

September Temperature in Monterrey

In September in Monterrey, the average temperature is 27°C (80°F), with maximums reaching 35°C (96°F) and minimums dipping as low as 20°C (69°F). This comfortable climate makes Monterrey an ideal destination for travelers seeking warm weather and outdoor adventures.

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

The chart illustrates September temperature patterns in Monterrey, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Monterrey, September typically has an average temperature of 27°C (80°F), with highs reaching up to 35°C (96°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Monterrey

In Monterrey in September, the precipitation amount is 159 mm (6.3 in) spread over 25 days.

September Precipitation Trends in Monterrey

The chart displays monthly precipitation patterns in Monterrey, 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 Monterrey, September typically receives around 159 mm (6.3 inches) of precipitation spread over approximately 25 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 Monterrey

In Monterrey in September, humidity is 71%. With an average temperature of 27°C (80°F), this humidity feels like a warm, thick blanket enveloping you, making outdoor activities more challenging and requiring frequent breaks to stay hydrated.

September Average Humidity in Monterrey

This chart illustrates the average monthly humidity levels in Monterrey, 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 Monterrey 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 Monterrey

In Monterrey 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 Monterrey.

Maximum UV Index Levels in Monterrey for September

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

Data source: Monterrey 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 Monterrey Compares to Other Months

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

This table compares monthly weather conditions in Monterrey, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	22°C (72°F)	125 mm (4.9 inches)	80%	very high
February Weather	23°C (75°F)	81 mm (3.2 inches)	72%	extreme
March Weather	24°C (76°F)	76 mm (3.0 inches)	61%	extreme
April Weather	26°C (80°F)	61 mm (2.4 inches)	53%	extreme
May Weather	27°C (82°F)	123 mm (4.9 inches)	51%	extreme
June Weather	27°C (81°F)	223 mm (8.8 inches)	52%	extreme
July Weather	26°C (80°F)	164 mm (6.5 inches)	58%	extreme
August Weather	26°C (80°F)	161 mm (6.4 inches)	63%	extreme
September Weather	27°C (80°F)	159 mm (6.3 inches)	71%	extreme
October Weather	26°C (79°F)	228 mm (9.0 inches)	79%	extreme
November Weather	24°C (75°F)	304 mm (12.0 inches)	79%	very high
December Weather	23°C (73°F)	130 mm (5.1 inches)	74%	very high