August weather forecast
Brazil

In August, the winter season persists in Brazil. However, the northeastern regions and the Amazon Basin begin to experience a slight rise in temperatures, with values typically exceeding 30°C (86°F). While the nights continue to be cool, the increasing daytime temperatures hint at the approaching end of the winter season.

The coastal cities, including Rio de Janeiro, remain in a stable temperature range of 22.8°C (73°F) to 27.2°C (81°F). The sea temperatures along the north-central coast begin to warm up subtly, making coastal activities increasingly enjoyable as the month progresses.

In contrast, southern Brazil continues to experience the chill of winter. The highlands and mountainous regions south of the Tropic of Capricorn record low temperatures, with frosts and occasional snowfall. Though not as cold as July, August still presents a predominantly cold climate in the south.

In terms of precipitation, Brazil sees a transition in August. The Amazon region's rainfall remains steady but less than in the earlier winter months. Meanwhile, the northeastern regions maintain their dry conditions, but the signs of the imminent wet season begin to surface. The cooler temperatures coupled with the gradual increase in rainfall across the country set the stage for the transition from winter to spring in the ensuing month of September.

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• São Paulo - August »
  The month with the least rainfall in São Paulo is August, when the rain falls for 4 days and typically collects 40mm (1.57") of precipitation. With the arrival of August, São Paulo's average high-temperature registers at a warm 23.3°C (73.9°F), indicating a subtle variation from the previous month.
• Rio de Janeiro - August »
  The least humid month in Rio de Janeiro is August, with an average relative humidity of 76%. On the first day of August in Rio de Janeiro sunrise is at 06:26 and sunset at 17:31.
• Brasília - August »
  Brasília transitions into August recording an average high-temperature of a still warm 28.3°C (82.9°F), closely aligning with the preceding month's temperature. The month with the most sunshine in Brasília is August, with an average of 9.9h of sunshine.
• Salvador - August »
  August is the month with the coldest seawater in Salvador with an average sea temperature of 25.7°C (78.3°F). On the first day of August in Salvador sunrise is at 05:53 and sunset at 17:27.
• Fortaleza - August »
  The month with the most sunshine in Fortaleza is August, with an average of 9.5h of sunshine. The average sunshine duration in August in Fortaleza is 9.5h.
• Belo Horizonte - August »
  The least humid month in Belo Horizonte is August, with an average relative humidity of 64.5%. On the first day of August in Belo Horizonte, sunrise is at 06:24 and sunset at 17:39.
• Manaus - August »
  The month with the least rainfall in Manaus is August, when the rain falls for 6 days and typically collects 47mm (1.85") of precipitation. On the first day of August in Manaus sunrise is at 06:06 and sunset at 18:05.
• Curitiba - August »
  The month with the least rainfall in Curitiba is August, when the rain falls for 7 days and typically collects 73mm (2.87") of precipitation. The month with the least rainfall in Curitiba is August, when the rain falls for 7 days and typically collects 73mm (2.87") of precipitation.
• Recife - August »
  August and September, with an average sea temperature of 26.4°C (79.5°F), are months with the coldest seawater in Recife, Brazil. In Recife, Brazil, during August, the rain falls for 17 days and regularly aggregates up to 205mm (8.07") of precipitation.
• Porto Alegre - August »
  August is the month with the coldest seawater in Porto Alegre, Brazil, with an average sea temperature of 15.8°C (60.4°F). An average minimum temperature of 11.9°C (53.4°F) is recorded in Porto Alegre during the month of August.
• Goiânia - August »
  August is the least humid month in Goiânia, with an average relative humidity of 47%. As August takes its course, Goiânia's average high-temperature registers at a tropical 31.2°C (88.2°F), closely aligning with the preceding month.
• Guarulhos - August »
  On the last day of August, in Guarulhos, sunrise is at 06:17 and sunset at 17:55 -03. Guarulhos registers an average high-temperature of a still pleasant 22°C (71.6°F) at the commencement of August, closely related to the preceding month.