January weather forecast
Brazil

January marks the peak of summer in Brazil, with some of the highest temperatures of the year. It is one of the warmest months, with temperatures soaring above 37.8°C (100°F) in the northeastern regions. The Amazon Basin also experiences hot weather; however, temperatures rarely cross 32.2°C (90°F) due to the heavy humidity and dense foliage.

In contrast to the north, the Atlantic coast offers more moderate temperatures ranging from 22.8°C (73°F) to 27.2°C (81°F), a pleasant respite to those unaccustomed to the Brazilian heat. The city of Rio de Janeiro is a notable location, where people are drawn to the sandy beaches to revel in the warm sea waters and vibrant cultural festivities, despite the high humidity.

In the southern regions of Brazil, the temperate climate keeps the heat relatively mild. However, the heat is more intense when compared to the preceding month of December and the following month of February. The mountainous areas south of Rio de Janeiro and beyond the Tropic of Capricorn often experience a slight decrease in temperatures due to their higher altitudes.

January is also a time of substantial rainfall in Brazil. The Amazon region and other parts of the country experience frequent and intense rain showers. Cities like Manaus in the Amazon Basin witness high humidity and abundant rainfall, making it a challenging period for outdoor activities. In contrast, the northeastern part of the country remains drier due to its arid climate, despite the high evaporation rates.

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• São Paulo - January »
  The months with the highest humidity in São Paulo are January, March, April and December, with an average relative humidity of 80%. The month with the most rainfall in São Paulo is January, when the rain falls for 15 days and typically aggregates up to 237mm (9.33") of precipitation.
• Rio de Janeiro - January »
  Kicking off the year, January in Rio de Janeiro, Brazil is characterized by a tropically warm climate with high relative humidity. In Rio de Janeiro, in January, the average water temperature is 25.1°C (77.2°F).
• Brasília - January »
  In January, conditions in Brasília, Brazil can be described as particularly wet with significant rainfall of 145mm (5.71"), most occurring over the course of 25 days. January, March, August through November, with an average maximum UV index of 6, are months with the highest UV index in Brasília, Brazil.
• Salvador - January »
  On the first day of January in Salvador, Brazil, sunrise is at 05:11 and sunset at 18:03. The months with the highest UV index in Salvador are January through March, September through December, with an average maximum UV index of 12.
• Fortaleza - January »
  Kickstarting the year in Fortaleza January presents a striking mix of air, water and sunshine elements. In Fortaleza, in January, the average water temperature is 28.2°C (82.8°F).
• Belo Horizonte - January »
  With an average relative humidity of 79%, January is the most humid month in Belo Horizonte. In Belo Horizonte during January, the rain falls for 17 days and regularly aggregates up to 296mm (11.65") of precipitation.
• Manaus - January »
  In January, the average heat index, which factors the actual air temperature with the relative humidity, is calculated to be 41°C (105.8°F). In Manaus in January, during 19 rainfall days, 264mm (10.39") of precipitation is typically accumulated.
• Curitiba - January »
  The month with the most rainfall in Curitiba is January, when the rain falls for 15 days and typically aggregates up to 172mm (6.77") of precipitation. January through March, November and December, with an average maximum UV index of 12, are months with the highest UV index in Curitiba, Brazil.
• Recife - January »
  Peak temperatures in Recife are observed in January, February and December, averaging a high-temperature of 30.2°C (86.4°F). Balmy temperatures and high humidity mark the weather in January in Recife, Brazil.
• Porto Alegre - January »
  January is the month with the warmest seawater in Porto Alegre, with an average sea temperature of 24.7°C (76.5°F). The month with the warmest seawater in Porto Alegre is January, with an average sea temperature of 24.7°C (76.5°F).
• Goiânia - January »
  The average heat index, which takes the relative humidity and factors it into the air temperature reading, in January is computed to be 34°C (93.2°F). In Goiânia in January, during 18 rainfall days, 267mm (10.51") of precipitation is typically accumulated.
• Guarulhos - January »
  The month with the most rainfall days in Guarulhos is January, when the rain falls for 14 days. December's transformation into January witnesses an average high-temperature of a still moderately hot 27°C (80.6°F) in Guarulhos, Brazil, consistent with the conditions of the preceding month.