Monthly climate guide
Buenos Aires weather in October
October in Buenos Aires is typically mild, with average daytime highs around 20°C (68°F) and night-time lows near 15°C (58°F). The month usually brings about 115 mm of rain (wet) and is often cloudy. Daytime highs are 3°C warmer than September and 4°C cooler than November.
What stands out in October
- Days and nights are close, only about 5°C apart.
- Temperatures are climbing — November is around 4°C warmer.
- October brings mid-spring to Buenos Aires — the seasons are reversed south of the equator.
- Buenos Aires is usually about 2°C cooler than Merlo, 30 km away, in October.
It's usually the wettest month of the year.
Avg high
20°C
68°F
Avg low
15°C
58°F
Rainfall
115 mm
wet
Humidity
77%
relative
Sky
56%
cloud · often cloudy
Buenos Aires weather by month
Show the monthly averages as a table
| Month | Avg high | Avg low | Rain | Humidity | Cloud cover |
|---|---|---|---|---|---|
| January | 28°C / 82°F | 22°C / 72°F | 94 mm | 69% | 44% |
| February | 27°C / 80°F | 22°C / 71°F | 109 mm | 71% | 45% |
| March | 25°C / 76°F | 19°C / 66°F | 89 mm | 71% | 40% |
| April | 22°C / 71°F | 17°C / 62°F | 105 mm | 76% | 50% |
| May | 18°C / 64°F | 13°C / 56°F | 83 mm | 80% | 57% |
| June | 15°C / 58°F | 10°C / 50°F | 52 mm | 80% | 54% |
| July | 13°C / 56°F | 9°C / 48°F | 81 mm | 81% | 58% |
| August | 15°C / 60°F | 10°C / 50°F | 79 mm | 80% | 53% |
| September | 17°C / 63°F | 12°C / 54°F | 92 mm | 77% | 51% |
| October | 20°C / 68°F | 15°C / 58°F | 115 mm | 77% | 56% |
| November | 24°C / 75°F | 18°C / 64°F | 106 mm | 71% | 45% |
| December | 27°C / 80°F | 20°C / 69°F | 100 mm | 67% | 42% |
What to pack for October
- T-shirts plus a light layer for the evening
- Comfortable trainers or sandals for long walks
- A compact umbrella or packable rain jacket
- Water-resistant shoes
Is October a good time to visit Buenos Aires?
Compare the months in the chart above to find your ideal window.
Best time to visit Buenos Aires →Other Argentina cities in October
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Buenos Aires weather in October. WeatherCompare, 2026 (NASA POWER / ERA5, 2011–2020 monthly averages). https://weathercompare.eu/weather/argentina/buenos-aires/october
<a href="https://weathercompare.eu/weather/argentina/buenos-aires/october">Buenos Aires weather in October</a> (WeatherCompare)
<iframe src="https://weathercompare.eu/embed/argentina/buenos-aires" width="300" height="160" style="border:0;border-radius:12px" loading="lazy" title="Buenos Aires weather in October"></iframe> <p style="font-size:12px"><a href="https://weathercompare.eu/weather/argentina/buenos-aires/october">Buenos Aires weather in October</a> – WeatherCompare</p>
Buenos Aires in October: quick answers
Is October a good time to visit Buenos Aires?
October is one of the wetter months in Buenos Aires, with about 115 mm of rain. You can still go: pack a rain jacket and keep plans flexible.
How warm is Buenos Aires in October?
Average highs are about 20°C (68°F) and average lows about 15°C (58°F), based on 10 years of daily data.
Does it rain a lot in Buenos Aires in October?
Buenos Aires typically gets around 115 mm of rain in October — wet. It's usually the wettest month of the year.
Figures are long-term averages for the area around Buenos Aires (NASA POWER / ERA5, 2011–2020), not a forecast for a specific year. For upcoming days, see the live multi-source forecast.