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Buenos Aires vs Rio de Janeiro: weather compared

Across the year, Buenos Aires has the better travel weather in 9 months and Rio de Janeiro in 3 — based purely on climate data, not opinion. Best months: Buenos Aires in February–May & September–December, Rio de Janeiro in May–September.

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Buenos Aires · Argentina

January: 89 mm rainFebruary: 76 mm rainMarch: 162 mm rainApril: 91 mm rainMay: 54 mm rainJune: 63 mm rainJuly: 49 mm rainAugust: 58 mm rainSeptember: 56 mm rainOctober: 87 mm rainNovember: 85 mm rainDecember: 72 mm rainJanuary high: 28°CFebruary high: 27°CMarch high: 25°CApril high: 21°CMay high: 17°CJune high: 15°CJuly high: 14°CAugust high: 16°CSeptember high: 18°COctober high: 21°CNovember high: 25°CDecember high: 27°CJanuary low: 21°CFebruary low: 20°CMarch low: 19°CApril low: 15°CMay low: 10°CJune low: 9°CJuly low: 7°CAugust low: 8°CSeptember low: 11°COctober low: 13°CNovember low: 17°CDecember low: 19°CJFMAMJJASOND Avg high Avg low Rainfall

Rio de Janeiro · Brazil

January: 134 mm rainFebruary: 140 mm rainMarch: 138 mm rainApril: 89 mm rainMay: 66 mm rainJune: 35 mm rainJuly: 43 mm rainAugust: 75 mm rainSeptember: 75 mm rainOctober: 93 mm rainNovember: 117 mm rainDecember: 150 mm rainJanuary high: 30°CFebruary high: 29°CMarch high: 29°CApril high: 27°CMay high: 26°CJune high: 25°CJuly high: 25°CAugust high: 25°CSeptember high: 26°COctober high: 26°CNovember high: 27°CDecember high: 28°CJanuary low: 24°CFebruary low: 24°CMarch low: 23°CApril low: 22°CMay low: 20°CJune low: 19°CJuly low: 18°CAugust low: 18°CSeptember low: 20°COctober low: 21°CNovember low: 21°CDecember low: 22°CJFMAMJJASOND Avg high Avg low Rainfall

At a glance

MetricBuenos AiresRio de Janeiro
Hottest month high28°C30°C
Coldest month low7°C18°C
Annual rainfall943 mm1154 mm
Avg sunshine9.8 h/day9.8 h/day
Best monthsFebruary–May & September–DecemberMay–September

Travel score, month by month

MonthBuenos AiresRio de JaneiroBetter weather
January 8.4 · Good 5.8 · Fair Buenos Aires
February 9.7 · Excellent 5.6 · Fair Buenos Aires
March 9.5 · Excellent 6.7 · Fair Buenos Aires
April 9.7 · Excellent 8.8 · Excellent Buenos Aires
May 9.7 · Excellent 9.6 · Excellent Buenos Aires
June 7.7 · Good 9.5 · Excellent Rio de Janeiro
July 7.5 · Good 9.8 · Excellent Rio de Janeiro
August 8.8 · Excellent 9.3 · Excellent Rio de Janeiro
September 10.0 · Excellent 9.4 · Excellent Buenos Aires
October 9.8 · Excellent 8.1 · Good Buenos Aires
November 9.7 · Excellent 8.0 · Good Buenos Aires
December 9.8 · Excellent 6.3 · Fair Buenos Aires

More comparisons

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Frequently asked questions

Which has better weather, Buenos Aires or Rio de Janeiro?

Buenos Aires has the better travel weather in 9 of 12 months, versus 3 for Rio de Janeiro — based on temperature, rainfall and sunshine.

When is the best time to visit Buenos Aires?

The best months to visit Buenos Aires are February–May & September–December, based on six years of climate data.

When is the best time to visit Rio de Janeiro?

The best months to visit Rio de Janeiro are May–September, based on six years of climate data.

Where should you go next month?

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