Climate in Buenos Aires — Annual Weather Overview
Buenos Aires has a subtropical climate — hot summers, mild winters, rainfall spread throughout the year. The hottest month is January (average high 28.6°C) and the coolest is July (14.2°C). There is a noticeable seasonal temperature shift of 14.4°C between January and July. Annual rainfall totals around 843mm. March is the wettest month at 139.4mm, while June averages just 30.5mm. Average daily sunshine is 10.0 hours.
**Spring (September, October, November):** average highs 21.2°C, 218mm rain. **Summer (December, January, February):** average highs 27.6°C, 229mm rain. **Autumn (March, April, May):** average highs 21.4°C, 281mm rain. **Winter (June, July, August):** average highs 14.8°C, 115mm rain.
Buenos Aires — Monthly Temperatures
Buenos Aires — Monthly Rainfall
✅ Best months to visit
All year
ℹ️ No months to avoid
Weather in Buenos Aires stays reasonable all year.
Buenos Aires weather by month
| Month | High | Low | Rain | Sun/day | Rainy days | Rating |
|---|---|---|---|---|---|---|
| January | 28.6°C | 21.0°C | 82.7mm | 11.9h | 9 | 10/10 |
| February | 27.1°C | 19.2°C | 73.7mm | 11.7h | 7 | 10/10 |
| March | 25.6°C | 19.3°C | 139.4mm | 10.2h | 9 | 9/10 |
| April | 21.2°C | 14.8°C | 87.6mm | 9.3h | 7 | 10/10 |
| May | 17.5°C | 10.6°C | 54.2mm | 8.5h | 4 | 10/10 |
| June | 14.3°C | 7.9°C | 30.5mm | 7.6h | 6 | 10/10 |
| July | 14.2°C | 7.8°C | 50.3mm | 7.8h | 8 | 10/10 |
| August | 16.0°C | 8.6°C | 33.8mm | 8.9h | 5 | 10/10 |
| September | 17.6°C | 10.7°C | 74.3mm | 8.8h | 6 | 10/10 |
| October | 21.1°C | 12.9°C | 64.3mm | 10.7h | 7 | 10/10 |
| November | 24.8°C | 16.8°C | 79.5mm | 11.5h | 8 | 10/10 |
| December | 27.0°C | 19.2°C | 73.0mm | 12.6h | 7 | 10/10 |
For the full verdict on when to go, see the best time to visit Buenos Aires. Seasonal breakdowns: spring, summer, autumn and winter.
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Frequently Asked Questions
What type of climate does Buenos Aires have?
Buenos Aires has a subtropical climate — hot summers, mild winters, rainfall spread throughout the year. Average highs range from 14.2°C in July to 28.6°C in January.
What is the hottest month in Buenos Aires?
January is the hottest month in Buenos Aires, with average highs of 28.6°C and lows of 21.0°C.
What is the coldest month in Buenos Aires?
July is the coolest month, with average highs of 14.2°C and lows of 7.8°C.
What is the wettest month in Buenos Aires?
March is the wettest month, averaging 139.4mm of rainfall over around 9 rainy days.
How much rain does Buenos Aires get per year?
Buenos Aires receives around 843mm of rain per year. The driest month is June (30.5mm).
When is the best time to visit Buenos Aires?
The best time to visit Buenos Aires is All year. See the full month-by-month guide →
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For the packing side of things, our sister site has a ready-made checklist: Buenos Aires packing list at 247PackingList. For currency, language and country facts see the Argentina guide at 247CountryInfo. Some travellers fund a longer stay in Buenos Aires by teaching English along the way — a TEFL certificate is usually all it takes.
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Climate data sourced from Open-Meteo (open source, open data licence). Monthly averages calculated from 2020–2023 historical data. Weather can be unpredictable — always check a live forecast before travelling.