January Weather in Altos, Brazil

Last updated: August 22, 2025

In January, the average temperature in Altos, Brazil is a warm 27°C (81°F), with daily fluctuations ranging from a comfortable 21°C (71°F) to a sizzling 38°C (101°F). Be prepared for a rather wet month, as precipitation totals around 199 mm (7.8 in), typically spread over 20 days. Expect high humidity levels, averaging around 90%, which can make the warmth feel even more intense!

January Temperature in Altos

In January in Altos, the average temperature is 27°C (81°F). Maximums can reach 38°C (101°F), while minimums can be as low as 21°C (71°F). This means you can expect warm and sunny weather, making it an ideal time for outdoor activities and exploration.

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

The chart illustrates January temperature patterns in Altos, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Altos, January typically has an average temperature of 27°C (81°F), with highs reaching up to 38°C (101°F) and lows dropping to around 21°C (71°F).

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

January Precipitation in Altos

In Altos in January, the total precipitation amount is 199 mm (7.8 in), occurring over a span of 20 days.

January Precipitation Trends in Altos

The chart displays monthly precipitation patterns in Altos, 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 Altos, January typically receives around 199 mm (7.8 inches) of precipitation spread over approximately 20 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 Altos

In Altos in January, humidity is 90%. With an average temperature of 27°C (81°F), this humidity feels like walking through a heavy fog, making outdoor activities uncomfortable and exhausting, and leaving travelers drenched in sweat within minutes.

January Average Humidity in Altos

This chart illustrates the average monthly humidity levels in Altos, 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 Altos is approximately 90%, 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 Altos

In Altos in January, the maximum UV index is 14, which corresponds to an extreme Exposure Category. The time to burn is just 10 minutes, so it's crucial to take precautions. For the detailed hourly UV index in Altos, you can check here.

Maximum UV Index Levels in Altos for January

The chart shows the monthly maximum UV Index (UVI) for Altos 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 Altos typically reaches 14, which falls under the extreme exposure category.

Data source: Altos 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 Altos Compares to Other Months

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

This table compares monthly weather conditions in Altos, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	27°C (81°F)	199 mm (7.8 inches)	90%	extreme
February Weather	27°C (80°F)	366 mm (14.4 inches)	91%	extreme
March Weather	26°C (80°F)	387 mm (15.2 inches)	92%	extreme
April Weather	27°C (80°F)	294 mm (11.6 inches)	93%	extreme
May Weather	27°C (81°F)	81 mm (3.2 inches)	88%	extreme
June Weather	28°C (83°F)	9 mm (0.3 inches)	75%	extreme
July Weather	28°C (83°F)	12 mm (0.5 inches)	52%	extreme
August Weather	29°C (85°F)	3 mm (0.1 inches)	42%	extreme
September Weather	31°C (87°F)	2 mm (0.1 inches)	36%	extreme
October Weather	31°C (88°F)	11 mm (0.4 inches)	35%	extreme
November Weather	30°C (86°F)	45 mm (1.8 inches)	43%	extreme
December Weather	29°C (84°F)	95 mm (3.7 inches)	76%	extreme