January Weather in Uniao, Brazil

Last updated: August 22, 2025

In January, the average temperature in Uniao, Brazil hovers around 27°C (81°F). Be prepared for a range of temperature extremes, with a minimum of 22°C (72°F) and a sizzling maximum reaching up to 38°C (100°F). During this month, expect 201 mm (7.9 in) of precipitation spread over 20 days, accompanied by a notably high average humidity of 90%.

January Temperature in Uniao

In January in Uniao, the average temperature is 27°C (81°F). Maximum temperatures can reach 38°C (100°F), while minimums can drop to as low as 22°C (72°F). This warm and pleasant weather makes Uniao an ideal destination for travelers seeking sunny days and comfortable evenings.

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

The chart illustrates January temperature patterns in Uniao, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Uniao, January typically has an average temperature of 27°C (81°F), with highs reaching up to 38°C (100°F) and lows dropping to around 22°C (72°F).

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

January Precipitation in Uniao

In Uniao in January, the precipitation amount is 201 mm (7.9 in) over the course of 20 days.

January Precipitation Trends in Uniao

The chart displays monthly precipitation patterns in Uniao, 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 Uniao, January typically receives around 201 mm (7.9 inches) of precipitation spread over approximately 20 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 Uniao

In Uniao 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 Uniao

This chart illustrates the average monthly humidity levels in Uniao, 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 Uniao 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 Uniao

In Uniao 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 Uniao, you can check here.

Maximum UV Index Levels in Uniao for January

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

Data source: Uniao 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 Uniao Compares to Other Months

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

This table compares monthly weather conditions in Uniao, 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)	201 mm (7.9 inches)	90%	extreme
February Weather	27°C (80°F)	325 mm (12.8 inches)	91%	extreme
March Weather	27°C (80°F)	385 mm (15.1 inches)	92%	extreme
April Weather	27°C (81°F)	301 mm (11.8 inches)	93%	extreme
May Weather	27°C (81°F)	109 mm (4.3 inches)	88%	extreme
June Weather	28°C (82°F)	15 mm (0.6 inches)	75%	extreme
July Weather	28°C (83°F)	17 mm (0.7 inches)	52%	extreme
August Weather	29°C (84°F)	3 mm (0.1 inches)	42%	extreme
September Weather	30°C (87°F)	2 mm (0.1 inches)	36%	extreme
October Weather	31°C (88°F)	5 mm (0.2 inches)	35%	extreme
November Weather	30°C (86°F)	48 mm (1.9 inches)	43%	extreme
December Weather	29°C (85°F)	87 mm (3.4 inches)	76%	extreme