Best time to visit Rio de Janeiro: September–November & April–June.
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September–November & April–June is the best window to visit Rio de Janeiro. Pleasant temperatures with fewer crowds and lower prices than the December–February peak.
December–February is the stretch to avoid if possible. Peak heat, humidity, and the highest prices and crowds of the year around Carnival and New Year.
Not necessarily — weather and crowd timing don't always match the cheapest airfare windows. Check our Best Time to Book Flights tool separately for pricing.
Usually yes — the weeks just before or after Rio de Janeiro's best window often have nearly as good weather with noticeably fewer crowds and lower prices.