January Weather in Sao Jose, Brazil

Last updated: August 22, 2025

In Sao Jose, Brazil, the average temperature in January hovers around 23°C (74°F), offering a pleasant climate. However, be prepared for extremes, as temperatures can dip to a minimum of 14°C (57°F) and soar to a sweltering 37°C (99°F). On top of that, expect about 273 mm (10.7 in) of precipitation spread over 19 days, contributing to a notably high average humidity of 85%.

January Temperature in Sao Jose

In January in Sao Jose, the average temperature is 23°C (74°F). The maximum can reach 37°C (99°F), while the minimum can drop as low as 14°C (57°F). It's a great time to visit for warm weather activities, but be prepared for occasional heatwaves and cooler evenings.

January Weather in Sao Jose: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Sao Jose, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Sao Jose, January typically has an average temperature of 23°C (74°F), with highs reaching up to 37°C (99°F) and lows dropping to around 14°C (57°F).

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

January Precipitation in Sao Jose

In Sao Jose in January, the precipitation amount is 273 mm (10.7 in) over a span of 19 days.

January Precipitation Trends in Sao Jose

The chart displays monthly precipitation patterns in Sao Jose, 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 Sao Jose, January typically receives around 273 mm (10.7 inches) of precipitation spread over approximately 19 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 Sao Jose

In Sao Jose in January humidity is 85%. With an average temperature of 23°C (74°F), this humidity feels like a thick, steamy blanket wrapping around you, making outdoor activities draining and sweaty, and leaving you longing for a cool breeze or a refreshing drink to ease the discomfort while traveling.

January Average Humidity in Sao Jose

This chart illustrates the average monthly humidity levels in Sao Jose, 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 Sao Jose is approximately 85%, 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 Sao Jose

In Sao Jose 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 Sao Jose.

Maximum UV Index Levels in Sao Jose for January

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

Data source: Sao Jose 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 Sao Jose Compares to Other Months

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

This table compares monthly weather conditions in Sao Jose, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
	Temperature	Precipitation	Humidity	UV
January Weather	23°C (74°F)	273 mm (10.7 inches)	85%	extreme
February Weather	23°C (73°F)	198 mm (7.8 inches)	84%	extreme
March Weather	22°C (71°F)	192 mm (7.6 inches)	84%	extreme
April Weather	19°C (67°F)	94 mm (3.7 inches)	83%	very high
May Weather	17°C (62°F)	133 mm (5.2 inches)	86%	high
June Weather	15°C (60°F)	138 mm (5.4 inches)	82%	moderate
July Weather	14°C (58°F)	62 mm (2.4 inches)	80%	moderate
August Weather	15°C (60°F)	66 mm (2.6 inches)	81%	high
September Weather	18°C (65°F)	147 mm (5.8 inches)	86%	very high
October Weather	19°C (66°F)	136 mm (5.3 inches)	87%	extreme
November Weather	20°C (68°F)	165 mm (6.5 inches)	87%	extreme
December Weather	22°C (72°F)	231 mm (9.1 inches)	88%	extreme