January Weather in El Rosario, El Salvador

Last updated: August 23, 2025

In January, the average temperature in El Rosario, El Salvador is a pleasant 26°C (79°F), with minimums dipping to 20°C (68°F) and maximums reaching a warm 33°C (91°F). Rainfall is minimal, with only 3 mm (0.1 in) of precipitation over 0 days. The average humidity sits at a comfortable 63%, making it an ideal time to enjoy all that El Rosario has to offer!

January Temperature in El Rosario

In January in El Rosario, the average temperature is 26°C (79°F). Maximum temperatures can reach 33°C (91°F), while minimums may drop to as low as 20°C (68°F). This pleasant and warm climate makes El Rosario an ideal destination for travelers seeking comfortable weather.

January Weather in El Rosario: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in El Rosario, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In El Rosario, January typically has an average temperature of 26°C (79°F), with highs reaching up to 33°C (91°F) and lows dropping to around 20°C (68°F).

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

January Precipitation in El Rosario

In El Rosario in January, the precipitation amount is 3 mm (0.1 in) during a total of 0 days.

January Precipitation Trends in El Rosario

The chart displays monthly precipitation patterns in El Rosario, with values for each month alongside January’s data, which is highlighted for easy comparison. It shows the amount of precipitation, providing insights into how January’s conditions compare to those of other months. In El Rosario, January typically receives around 3 mm (0.1 inches) of precipitation spread over approximately 0 days.

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

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Millimeters (mm) Inches (in)

January Humidity in El Rosario

In El Rosario in January humidity is 63%. With average temperature 26°C (79°F), this humidity feels like a warm embrace, making it perfect for leisurely strolls or exploring local attractions, though be prepared for a slight stickiness that may prompt you to seek shade or refreshing beverages along the way.

January Average Humidity in El Rosario

This chart illustrates the average monthly humidity levels in El Rosario, with January’s data highlighted for easy comparison. It shows the fluctuation in humidity throughout the year, helping you understand how conditions vary by season. In January, average humidity in El Rosario is approximately 63%, offering insight into how humid the weather typically is during this month.

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

January UV Index in El Rosario

In El Rosario in January, the maximum UV index reaches 11, which corresponds to an extreme Exposure Category. With a time to burn of just 10 minutes, it's essential to take precautions. For more details, you can check the Hourly UV Index in El Rosario.

Maximum UV Index Levels in El Rosario for January

The chart shows the monthly maximum UV Index (UVI) for El Rosario in January, 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 January, the maximum UV index in El Rosario typically reaches 11, which falls under the extreme exposure category.

Data source: El Rosario January 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 January Weather in El Rosario Compares to Other Months

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

This table compares monthly weather conditions in El Rosario, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	26°C (79°F)	3 mm (0.1 inches)	63%	extreme
February Weather	26°C (80°F)	5 mm (0.2 inches)	62%	extreme
March Weather	27°C (81°F)	7 mm (0.3 inches)	59%	extreme
April Weather	27°C (81°F)	45 mm (1.8 inches)	59%	extreme
May Weather	27°C (80°F)	287 mm (11.3 inches)	59%	extreme
June Weather	26°C (80°F)	316 mm (12.4 inches)	68%	extreme
July Weather	27°C (81°F)	145 mm (5.7 inches)	77%	extreme
August Weather	27°C (80°F)	256 mm (10.1 inches)	79%	extreme
September Weather	26°C (79°F)	290 mm (11.4 inches)	77%	extreme
October Weather	26°C (79°F)	349 mm (13.7 inches)	77%	extreme
November Weather	26°C (79°F)	74 mm (2.9 inches)	75%	very high
December Weather	26°C (79°F)	7 mm (0.3 inches)	66%	very high