July is winter time in the Southern Hemisphere. The
Brazilian winter, at São Paulo and Rio de Janeiro, is similar to spring or
autumn in many parts of the United States or Europe. You should check the
weather forecast and plan your baggage content accordingly.
In summer (January through March), the mean low
temperature in São Paulo city is about 17 °C (63 °F) and the mean high
temperatures is near 28 °C (82 °F). In winter, temperatures tend to range
between 11 and 23 °C (52 and 73 °F).
Monthly mean temperatures and rain in São Paulo city
Temperature averages are similar to those of Sydney
and Los Angeles. The Tropic of Capricorn, at about 23°27' S, passes through
north of São Paulo and roughly marks the boundary between the tropical and
temperate areas of South America. Because of its elevation of 760 m (2,490
ft) above sea level, however, São Paulo enjoys a temperate climate.
Due to the altitude of the city, there are few hot
nights in São Paulo even in the summer months, with minimum temperatures rarely
exceeding 21 °C (69 °F). In winter, however, the strong inflow of cold fronts
accompanied by excessive cloudiness and polar air cause very low temperatures,
even in the afternoon.
São Paulo is known for its rapidly changing
weather. Locals say that all four seasons can be experienced in one day. In the
morning, when winds blow from the ocean, the weather can be cool or sometimes
even cold. When the sun hits its peak, the weather can be extremely dry and hot.
When the sun sets, the cold wind comes back bringing cool temperatures. This
phenomenon happens usually in the winter.
You can check the weather forecast for São Paulo,
Rio de Janeiro and most Brazilian cities using international weather sites,
such as these: