January Weather in San Juan Opico, El Salvador

Last updated: August 23, 2025

In January, the average temperature in San Juan Opico, El Salvador hovers around 26°C (78°F). Expect a comfortable range, with minimums dipping to 14°C (58°F) and highs soaring up to 36°C (98°F). During this period, precipitation is minimal at just 1 mm (0.1 in) over 0 days, while the average humidity sits at a pleasant 63%.

January Temperature in San Juan Opico

In January in San Juan Opico, the average temperature is 26°C (78°F). Maximums can reach 36°C (98°F), while minimums can drop to as low as 14°C (58°F). This pleasant climate makes San Juan Opico an ideal destination for outdoor activities and sightseeing during this time of year.

January Weather in San Juan Opico: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in San Juan Opico, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In San Juan Opico, January typically has an average temperature of 26°C (78°F), with highs reaching up to 36°C (98°F) and lows dropping to around 14°C (58°F).

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

January Precipitation in San Juan Opico

In San Juan Opico in January, the precipitation amount is 1 mm (0.1 in) during 0 days, indicating a very dry period.

January Precipitation Trends in San Juan Opico

The chart displays monthly precipitation patterns in San Juan Opico, 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 San Juan Opico, January typically receives around 1 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.

Choose your preferred precipitation unit

Millimeters (mm) Inches (in)

January Humidity in San Juan Opico

In San Juan Opico in January humidity is 63%. With an average temperature of 26°C (78°F), this humidity feels like a warm, tropical embrace, making outdoor activities pleasantly refreshing yet slightly sticky, perfect for leisurely strolls and beachside adventures.

January Average Humidity in San Juan Opico

This chart illustrates the average monthly humidity levels in San Juan Opico, 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 San Juan Opico 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 San Juan Opico

In San Juan Opico 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 San Juan Opico.

Maximum UV Index Levels in San Juan Opico for January

The chart shows the monthly maximum UV Index (UVI) for San Juan Opico 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 San Juan Opico typically reaches 11, which falls under the extreme exposure category.

Data source: San Juan Opico 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 San Juan Opico Compares to Other Months

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

This table compares monthly weather conditions in San Juan Opico, 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 (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