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January Weather in Santa Rosa, Brazil

Last updated: August 22, 2025

In Santa Rosa, Brazil, the average temperature in January hovers around 26°C (79°F), with a minimum dipping to 15°C (59°F) and a scorching maximum reaching up to 40°C (104°F). Visitors can expect a precipitation total of 148 mm (5.8 in) over approximately 13 days, while the average humidity settles at a comfortable 79%. 🌞🌧️

January Temperature in Santa Rosa

In January in Santa Rosa, the average temperature is 26°C (79°F). Maximum temperatures can reach 40°C (104°F), while minimums can drop to as low as 15°C (59°F). It's an ideal time for travelers to enjoy warm weather, but be prepared for hot days and cooler nights.

January Weather in Santa Rosa: Daily Temperature Highs, Lows, and Averages

The chart illustrates January temperature patterns in Santa Rosa, showcasing daily minimum, maximum, and average temperatures. It highlights the typical range of temperatures throughout the month, providing insights into weather trends. In Santa Rosa, January typically has an average temperature of 26°C (79°F), with highs reaching up to 40°C (104°F) and lows dropping to around 15°C (59°F).
JanFebMarAprMayJunJulAugSepOctNovDec797775706461596368717578
Data source: Temperature data for Santa Rosa generated using information from the Copernicus Climate Change Service.
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The average of daily temperatures (24 hours) calculated across all days in the month.

January Precipitation in Santa Rosa

In Santa Rosa in January, the precipitation amount is 148 mm (5.8 in) occurring over the course of 13 days.

January Precipitation Trends in Santa Rosa

The chart displays monthly precipitation patterns in Santa Rosa, 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 Santa Rosa, January typically receives around 148 mm (5.8 inches) of precipitation spread over approximately 13 days.
JanFebMarAprMayJunJulAugSepOctNovDec148104115113198126987711617412483
Data source: Precipitation data for January generated using information from the Copernicus Climate Change Service.
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January Humidity in Santa Rosa

In Santa Rosa in January humidity is 79%. With an average temperature of 26°C (79°F), this humidity feels like a warm, sticky embrace that can make outdoor activities feel exhausting. Travelers should be prepared for a heavy air that clings to the skin, making hydration essential while navigating the sights and sounds of the city.

January Average Humidity in Santa Rosa

This chart illustrates the average monthly humidity levels in Santa Rosa, 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 Santa Rosa is approximately 79%, offering insight into how humid the weather typically is during this month.
JanFebMarAprMayJunJulAugSepOctNovDec79%74%72%78%82%78%73%59%62%65%76%85%
Data source: Humidity data for January generated using information from the Copernicus Climate Change Service.

January UV Index in Santa Rosa

In Santa Rosa 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 Santa Rosa.

Maximum UV Index Levels in Santa Rosa for January

The chart shows the monthly maximum UV Index (UVI) for Santa Rosa 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 Santa Rosa typically reaches 15, which falls under the extreme exposure category.
JanFebMarAprMayJunJulAugSepOctNovDec15141210656710131414
Data source: Santa Rosa 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 Santa Rosa Compares to Other Months

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

This table compares monthly weather conditions in Santa Rosa, showing how January’s temperature, precipitation, humidity, and UV index levels differ from those of other months.
 TemperaturePrecipitationHumidityUV
January Weather26°C (79°F)148 mm (5.8 inches)79%extreme
February Weather25°C (77°F)104 mm (4.1 inches)74%extreme
March Weather24°C (75°F)115 mm (4.5 inches)72%extreme
April Weather21°C (71°F)113 mm (4.5 inches)78%very high
May Weather18°C (64°F)198 mm (7.8 inches)82%high
June Weather16°C (61°F)126 mm (5.0 inches)78%moderate
July Weather15°C (60°F)98 mm (3.9 inches)73%high
August Weather17°C (63°F)77 mm (3.0 inches)58%high
September Weather20°C (69°F)116 mm (4.5 inches)62%very high
October Weather22°C (72°F)174 mm (6.9 inches)65%extreme
November Weather24°C (75°F)124 mm (4.9 inches)76%extreme
December Weather26°C (79°F)83 mm (3.3 inches)85%extreme

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