December Weather in Guazapa, El Salvador

Last updated: August 23, 2025

In December, the average temperature in Guazapa, El Salvador sits at a comfortable 26°C (79°F). Expect a minimum of 16°C (61°F) and a maximum soaring to 36°C (98°F). With an average humidity of 66%, the climate remains relatively pleasant. Notably, precipitation averages only 2 mm (0.1 in) over 0 days, making this a great time to enjoy outdoor activities without the worry of rain!

December Temperature in Guazapa

In December in Guazapa, the average temperature is 26°C (79°F), with maximums reaching 36°C (98°F) and minimums dropping as low as 16°C (61°F). This makes it an ideal time for travelers looking to enjoy warm weather while also having the option for cooler evenings.

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

The chart illustrates December 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, December typically has an average temperature of 26°C (79°F), with highs reaching up to 36°C (98°F) and lows dropping to around 16°C (61°F).

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

December Precipitation in Guazapa

In Guazapa in December, the precipitation amount is 2 mm (0.1 in) during a span of 0 days.

December Precipitation Trends in Guazapa

The chart displays monthly precipitation patterns in Guazapa, with values for each month alongside December’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how December’s conditions compare to those of other months. In Guazapa, December typically receives around 2 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

December Humidity in Guazapa

In Guazapa in December, humidity is 66%. With an average temperature of 26°C (79°F), this humidity feels like a warm, enveloping blanket, making outdoor activities invigorating yet requiring occasional breaks in the shade to stay comfortable while traveling.

December Average Humidity in Guazapa

This chart illustrates the average monthly humidity levels in Guazapa, with December’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In December, average humidity in Guazapa is approximately 66%, offering insight into how humid the weather typically is during this month.

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

December UV Index in Guazapa

In Guazapa in December, the maximum UV index is 9, which corresponds to a very high Exposure Category. The time to burn is just 15 minutes, so it's essential to take precautions. For detailed information, you can check the Hourly UV Index in Guazapa.

Maximum UV Index Levels in Guazapa for December

The chart shows the monthly maximum UV Index (UVI) for Guazapa in December, 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 December, the maximum UV index in Guazapa typically reaches 9, which falls under the very high exposure category.

Data source: Guazapa December 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 December 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 December’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 December’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