Buenos Aires climate at a glance
Buenos Aires sees average daytime highs ranging from 14°C in July to 28°C in January. Around 943 mm of precipitation falls over roughly 86 wet days a year, peaking in March (162 mm) and easing off in July (49 mm). December is the sunniest month at about 12 hours of sunshine.
Buenos Aires temperature & rainfall by month
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Weather seasons in Buenos Aires
Grouped by the monthly travel score — purely weather-based, not crowd or price data.
Buenos Aires climate, month by month
Averages computed from ERA5 reanalysis data, 2019–2024. Daylight on the 15th: 11.8 h in September. Reuse this data freely with attribution — download as JSON or CSV.
| Month | High | Low | Rain days | Rainfall | Sun/day | Humidity | Score |
|---|---|---|---|---|---|---|---|
| January | 28°C | 21°C | 9.5 | 89 mm | 11.9 h | 67% | 8.4 · Good |
| February | 27°C | 20°C | 6.7 | 76 mm | 11.5 h | 68% | 9.7 · Excellent |
| March | 25°C | 19°C | 9.2 | 162 mm | 10.3 h | 75% | 9.5 · Excellent |
| April | 21°C | 15°C | 7.3 | 91 mm | 8.8 h | 77% | 9.7 · Excellent |
| May | 17°C | 10°C | 4.8 | 54 mm | 8 h | 78% | 9.7 · Excellent |
| June | 15°C | 9°C | 7.8 | 63 mm | 7.3 h | 81% | 7.7 · Good |
| July | 14°C | 7°C | 6.5 | 49 mm | 7.9 h | 79% | 7.5 · Good |
| August | 16°C | 8°C | 5.2 | 58 mm | 8.4 h | 75% | 8.8 · Excellent |
| September | 18°C | 11°C | 5.5 | 56 mm | 9.2 h | 73% | 10.0 · Excellent |
| October | 21°C | 13°C | 7.8 | 87 mm | 10.2 h | 70% | 9.8 · Excellent |
| November | 25°C | 17°C | 8.2 | 85 mm | 11.5 h | 67% | 9.7 · Excellent |
| December | 27°C | 19°C | 7.7 | 72 mm | 12.4 h | 63% | 9.8 · Excellent |
Frequently asked questions
What is the best time to visit Buenos Aires?
The best time to visit Buenos Aires is February–May & September–December, when daytime highs average around 18°C with about 5.5 rainy days per month.
What is the hottest month in Buenos Aires?
January is the hottest month in Buenos Aires, with average highs of 28°C.
What is the rainiest month in Buenos Aires?
March is the rainiest month in Buenos Aires, with around 162 mm of rainfall over 9.2 rainy days.
Where should you go next month?
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