September Weather in Guazapa, El Salvador

Last updated: August 23, 2025

In September, the average temperature in Guazapa, El Salvador is a warm 27°C (81°F), with lows of 20°C (69°F) and highs reaching up to 37°C (100°F). Expect 155 mm (6.1 in) of precipitation spread over 21 days, contributing to an average humidity of 77%. Prepare for a mix of warmth and moisture!

September Temperature in Guazapa

In September, in Guazapa, the average temperature is 27°C (81°F), with maximums that can reach 37°C (100°F) and minimums as low as 20°C (69°F). This pleasantly warm climate makes Guazapa an ideal destination for travelers seeking a comfortable getaway.

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

The chart illustrates September temperature patterns in Guazapa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Guazapa, September typically has an average temperature of 27°C (81°F), with highs reaching up to 37°C (100°F) and lows dropping to around 20°C (69°F).

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

September Precipitation in Guazapa

In Guazapa in September, the precipitation amount is 155 mm (6.1 in) spread over 21 days.

September Precipitation Trends in Guazapa

The chart displays monthly precipitation patterns in Guazapa, 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 Guazapa, September typically receives around 155 mm (6.1 inches) of precipitation spread over approximately 21 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 Guazapa

In Guazapa in September, humidity is 77%. With an average temperature of 27°C (81°F), this humidity feels like a warm blanket, making travel feel sticky and heavy, as sweat clings to the skin and the air becomes thick, causing you to long for refreshing breezes and cool shade.

September Average Humidity in Guazapa

This chart illustrates the average monthly humidity levels in Guazapa, 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 Guazapa is approximately 77%, 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 Guazapa

In Guazapa 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 Guazapa.

Maximum UV Index Levels in Guazapa for September

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

Data source: Guazapa 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 Guazapa Compares to Other Months

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

This table compares monthly weather conditions in Guazapa, showing how September’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (78°F)	1 mm (0.1 inches)	63%	extreme
February Weather	27°C (81°F)	2 mm (0.1 inches)	62%	extreme
March Weather	28°C (82°F)	1 mm (0.0 inches)	59%	extreme
April Weather	29°C (84°F)	16 mm (0.6 inches)	59%	extreme
May Weather	28°C (83°F)	125 mm (4.9 inches)	59%	extreme
June Weather	27°C (80°F)	171 mm (6.7 inches)	68%	extreme
July Weather	28°C (83°F)	58 mm (2.3 inches)	77%	extreme
August Weather	28°C (82°F)	91 mm (3.6 inches)	79%	extreme
September Weather	27°C (81°F)	155 mm (6.1 inches)	77%	extreme
October Weather	26°C (80°F)	128 mm (5.1 inches)	77%	extreme
November Weather	26°C (79°F)	35 mm (1.4 inches)	75%	very high
December Weather	26°C (79°F)	2 mm (0.1 inches)	66%	very high