Buenos Aires weather in October
In October, Buenos Aires has an average high of 20 °C68 °F and an average low of 14 °C58 °F, with about 110 mm4.3 in of precipitation. It is the 7th warmest month of the year and ranks 3rd for precipitation.
How October compares with other months
Compared with September, October is 3 °C5.4 °F warmer on average and wetter by 27 mm1.0 in. Compared with November, October is 3.1 °C5.7 °F cooler on average and wetter by 9 mm0.4 in. Daylight lasts about 13.0 hours around the middle of the month. Average relative humidity is 76% and the average cloud amount 53%.
Is October a good time to visit Buenos Aires?
October is not among the most comfortable months by our comfort score: it is cool (average high 20 °C68 °F) and it is fairly wet (110 mm4.3 in). The most comfortable months in Buenos Aires are November–January and April.
What to wear in October
For Buenos Aires in October, pack light layers — T-shirts plus a light sweater or jacket and an umbrella or light rain jacket.
October in nearby places
| Place | High °C°F | Low °C°F | Precip. mmin |
|---|---|---|---|
| Buenos Aires | 2068 | 1458 | 1104.3 |
| Berazategui | 2171 | 1151 | 1084.2 |
| Laferrere | 2272 | 1050 | 1104.3 |
| Merlo | 2373 | 1151 | 1134.5 |
| La Plata | 2171 | 1151 | 1084.2 |
| Montevideo | 1865 | 1355 | 1034.1 |
| San Nicolás de los Arroyos | 2476 | 1151 | 1365.4 |
| Rosario | 2578 | 1153 | 1234.8 |
| Tandil | 2068 | 744 | 843.3 |
Nearby places that are more than 1 °C1.8 °F warmer in October: Rosario; cooler: Berazategui, Laferrere, La Plata and Montevideo.
Other months in Buenos Aires
- January28 °C82 °F / 22 °C71 °F
- February27 °C80 °F / 21 °C70 °F
- March25 °C76 °F / 19 °C67 °F
- April21 °C70 °F / 16 °C61 °F
- May17 °C63 °F / 13 °C55 °F
- June14 °C58 °F / 10 °C50 °F
- July13 °C56 °F / 9 °C48 °F
- August15 °C59 °F / 10 °C50 °F
- September17 °C62 °F / 12 °C53 °F
- October20 °C68 °F / 14 °C58 °F
- November23 °C74 °F / 17 °C63 °F
- December26 °C79 °F / 20 °C68 °F
Frequently asked questions
How warm is Buenos Aires in October?
In October the average high in Buenos Aires is 20 °C (68 °F) and the average low is 14 °C (58 °F).
Does it rain a lot in Buenos Aires in October?
On average about 110 mm (4.3 in) of precipitation falls in October; it ranks 3rd of the 12 months.
Is October the warmest month in Buenos Aires?
No. The warmest month in Buenos Aires is January, with an average high of 28 °C (82 °F). The coldest month is July, with an average low of 9 °C (48 °F).
How long is the day in Buenos Aires in October?
In the middle of October the day in Buenos Aires lasts about 13.0 hours from sunrise to sunset. The value is calculated from the position of the city and the sun.
How humid is Buenos Aires in October?
The average relative humidity in October is about 76%. This is a long-term average for the whole day.
How cloudy is Buenos Aires in October?
On average about 53% of the sky is covered by cloud in October. This is the mean cloud amount from satellite data, not the number of sunny days.
About this data
All figures are 25-year averages (January 2001 – December 2025) from the NASA POWER project. Temperature, humidity, wind and precipitation come from the MERRA-2 reanalysis (precipitation is the bias-corrected MERRA-2 product), cloud and solar values from CERES satellite data. They describe a grid cell of roughly 50–70 km, not a single weather station, so they can differ from airport records — most of all on coasts, in mountains and for rainfall. Average highs and lows are the monthly mean temperature plus/minus half of the average daily temperature range. Counts of rainy days are not part of this dataset.