The most comfortable time to visit Buenos Aires is from late September to December, and again from mid March to early May. For sun, aim for January; for walking, go from April to early November.
When to go five ratings · thirty-six ten-day sections · click a cell to read it
For sun, go in January. It peaks in early January, at 62. Avoid May to early October for this: it falls to 0, mostly because it is too cool. The clearest skies come in January, when the sky is typically 47% covered at midday (partly cloudy).
The being outside season here runs from late September to December, with a second spell from mid March to early May. It peaks in mid April, at 79. The weakest stretch is from late June to mid July, when it drops to 16, mostly because it is too cold.
For walking, go from April to early November. It peaks in mid September, at 84. Avoid January to early February for this: it falls to 15, mostly because it is too warm.
The year, measured
The average temperature in Buenos Aires over the whole year is 18°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 8°C. Buenos Aires has no sharply defined rainy season: the chance of rain on a given day runs from 20% in June, the driest month, to 39% in April, the wettest. Winds in Buenos Aires are highest in November, averaging 3.9 m/s (14 km/h), and lightest in June, at 2.7 m/s (10 km/h). The prevailing wind is from the NE. The clearest skies in Buenos Aires come in February, when the sky is typically 43% covered; July is the cloudiest month, at 58%.
Month by month Buenos Aires climate by month: average temperatures year round · click a month to read it
| Month | High | Low | Feels like | Chance of rain | Cloud | Wind | Being outside | Sun | Walking |
|---|---|---|---|---|---|---|---|---|---|
| January | 28°C | 22°C | 27°C | 28% | 44% | 3.7 m/s | 48 | 60 | 17 |
| February | 27°C | 21°C | 27°C | 33% | 43% | 3.3 m/s | 47 | 53 | 21 |
| March | 25°C | 19°C | 24°C | 33% | 46% | 3.2 m/s | 62 | 39 | 37 |
| April | 21°C | 15°C | 20°C | 39% | 52% | 3.0 m/s | 77 | 15 | 66 |
| May | 17°C | 12°C | 15°C | 30% | 54% | 2.8 m/s | 49 | 2 | 79 |
| June | 14°C | 9°C | 11°C | 20% | 55% | 2.7 m/s | 26 | 1 | 75 |
| July | 14°C | 8°C | 10°C | 26% | 58% | 3.0 m/s | 18 | 0 | 70 |
| August | 15°C | 9°C | 12°C | 29% | 53% | 3.1 m/s | 28 | 2 | 74 |
| September | 18°C | 12°C | 15°C | 27% | 56% | 3.6 m/s | 48 | 2 | 79 |
| October | 20°C | 14°C | 18°C | 28% | 52% | 3.7 m/s | 64 | 11 | 71 |
| November | 24°C | 18°C | 22°C | 29% | 47% | 3.9 m/s | 72 | 30 | 50 |
| December | 26°C | 20°C | 25°C | 31% | 45% | 3.7 m/s | 63 | 44 | 36 |
High and low are the warmest and coolest of four readings a day — midnight, 6am, noon and 6pm — so a true overnight low can sit a degree or two under them. Chance of rain, cloud and wind are the day’s average; feels-like and the three ratings (each out of 100: Good from 55, Ideal from 80) are read at midday.
Seasons, and the year in short Buenos Aires weather by season
Year round, Buenos Aires has days of about 14°C at their warmest in July, its coolest month, and 28°C in January, its warmest; the coolest hours of the day run from 8°C to 22°C through the year, and the average temperature over the year is 18°C around the clock. Rain is most likely around April and least likely around June. Every figure here is a decade of observations blended into one representative year, so it reads as what this date is usually like, not a forecast for one particular day.
Buenos Aires weather in winterJune to August
Winter in Buenos Aires has typical daily highs of about 14°C and lows of about 9°C, with a 25% chance of rain on a given day.
Buenos Aires weather in springSeptember to November
Spring in Buenos Aires has typical daily highs of about 21°C and lows of about 14°C, with a 28% chance of rain on a given day.
Buenos Aires weather in summerDecember to February
Summer in Buenos Aires has typical daily highs of about 27°C and lows of about 21°C, with a 31% chance of rain on a given day.
Buenos Aires weather in autumnMarch to May
Autumn in Buenos Aires has typical daily highs of about 21°C and lows of about 15°C, with a 34% chance of rain on a given day.
When is the rainy season in Buenos Aires?
Buenos Aires has no sharply defined rainy season: the chance of rain on a given day runs from 20% in June, the driest month, to 39% in April, the wettest.
What time of year is Buenos Aires windiest?
Winds in Buenos Aires are highest in November, averaging 3.9 m/s (14 km/h), and lightest in June, at 2.7 m/s (10 km/h). The prevailing wind is from the NE.
What is the average temperature in Buenos Aires year round?
The average temperature in Buenos Aires over the whole year is 18°C. January is the hottest month, with highs of about 28°C; July is the coldest, with lows of about 8°C.
Where to go instead in early July, the weakest time here for being outside
How this is worked out
Every figure is a decade of weather-station observations blended into one typical year, in ten-day sections. The ratings, the chart and the feels-like column are read at midday local solar time. Being outside is the Easy outdoors rating, Sun is Sunbathing and Walking is Active outdoors, each out of 100: Good from 55, Ideal from 80. They describe what a time of year is usually like here, not a forecast. The dotted links open the map at that time of year; set its time of day to midday to see these numbers.