February is the hottest month in Rio de Janeiro with an average temperature of 27°C (81°F) and the coldest is July at 21°C (70°F) with the most daily sunshine hours at 7 in August. The wettest month is December with an average of 169mm of rain. The best month to swim in the sea is in March when the average sea temperature is 26°C (79°F).
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Sunrise 05:00
Sunset 18:18
Sunrise 05:00
Sunset 18:18