January Weather in Merlo, Argentina

Last updated: August 22, 2025

In January, the average temperature in Merlo, Argentina is a pleasant 21°C (71°F), with extremes ranging from a cool 8°C (46°F) to a sweltering 36°C (97°F). Visitors can expect 113 mm (4.4 in) of precipitation spread over 13 days, complemented by an average humidity level of 40%, making it a comfortable time to explore.

January Temperature in Merlo

In January in Merlo, the average temperature is 21°C (71°F). Maximums can reach 36°C (97°F), while minimums can drop as low as 8°C (46°F). It's a great time for travelers to enjoy warm days and cool evenings while exploring the area.

January Weather in Merlo: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Merlo, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Merlo, January typically has an average temperature of 21°C (71°F), with highs reaching up to 36°C (97°F) and lows dropping to around 8°C (46°F).

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

January Precipitation in Merlo

In Merlo in January, the precipitation amount is 113 mm (4.4 in) over the course of 13 days.

January Precipitation Trends in Merlo

The chart displays monthly precipitation patterns in Merlo, 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 Merlo, January typically receives around 113 mm (4.4 inches) of precipitation spread over approximately 13 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 Merlo

In Merlo in January, humidity is 40%. With an average temperature of 21°C (71°F), this humidity feels like a pleasant and comfortable environment for traveling, making it ideal for exploring without the discomfort of excessive heat or mugginess.

January Average Humidity in Merlo

This chart illustrates the average monthly humidity levels in Merlo, 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 Merlo is approximately 40%, 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 Merlo

In Merlo in January, the maximum UV index reaches an alarming 15, which falls into the extreme Exposure Category. With a time to burn of just 10 minutes, it's crucial to take precautions. For detailed information, you can check the Hourly UV Index in Merlo.

Maximum UV Index Levels in Merlo for January

The chart shows the monthly maximum UV Index (UVI) for Merlo 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 Merlo typically reaches 15, which falls under the extreme exposure category.

Data source: Merlo 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 Merlo Compares to Other Months

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

This table compares monthly weather conditions in Merlo, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	21°C (71°F)	113 mm (4.4 inches)	40%	extreme
February Weather	20°C (67°F)	122 mm (4.8 inches)	48%	extreme
March Weather	18°C (64°F)	91 mm (3.6 inches)	53%	extreme
April Weather	15°C (60°F)	68 mm (2.7 inches)	63%	very high
May Weather	11°C (53°F)	23 mm (0.9 inches)	67%	high
June Weather	8°C (46°F)	14 mm (0.5 inches)	61%	moderate
July Weather	7°C (46°F)	10 mm (0.4 inches)	55%	moderate
August Weather	10°C (51°F)	5 mm (0.2 inches)	48%	high
September Weather	13°C (56°F)	29 mm (1.1 inches)	45%	very high
October Weather	16°C (60°F)	46 mm (1.8 inches)	43%	extreme
November Weather	18°C (65°F)	121 mm (4.8 inches)	45%	extreme
December Weather	21°C (69°F)	89 mm (3.5 inches)	40%	extreme