Annual mean 22°C · wettest around April · prevailing wind W
Warmest
27.0 °C
Coldest
24.9 °C
Wettest
9%
Windiest
2.8 m/s
Prevailing
W
2.2 m/s average
When this place is good five ratings · thirty-six ten-day sections · click a cell to read it
never good
never good
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec
Every reading
bars actual · line feels-like, °Cchance of rain, %wind speed, m/ssky covered, %
The average temperature in Buenos Aires over the whole year is 22°C. September is the hottest month, with highs of about 27°C; July is the coldest, with lows of about 18°C. Buenos Aires has no sharply defined rainy season: the chance of rain on a given day runs from 4% in August, the driest month, to 14% in April, the wettest. Winds in Buenos Aires are highest in September, averaging 2.0 m/s (7 km/h), and lightest in March, at 1.6 m/s (6 km/h). The prevailing wind is from the W. The clearest skies in Buenos Aires come in September, when the sky is typically 64% covered; March is the cloudiest month, at 77%.
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
26°C
18°C
27°C
7%
70%
1.7 m/s
49
47
26
February
26°C
19°C
27°C
8%
72%
1.7 m/s
48
44
26
March
25°C
19°C
27°C
14%
77%
1.6 m/s
49
42
27
April
26°C
19°C
27°C
14%
74%
1.6 m/s
49
47
22
May
26°C
19°C
28°C
14%
75%
1.6 m/s
48
47
22
June
25°C
18°C
27°C
10%
72%
1.6 m/s
49
46
26
July
26°C
18°C
27°C
5%
69%
1.9 m/s
48
48
25
August
26°C
18°C
27°C
4%
67%
1.9 m/s
49
49
23
September
27°C
18°C
28°C
7%
64%
2.0 m/s
46
50
21
October
26°C
18°C
27°C
12%
71%
1.6 m/s
50
49
22
November
25°C
19°C
27°C
12%
74%
1.6 m/s
50
46
27
December
25°C
19°C
27°C
8%
70%
1.6 m/s
48
49
25
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 25°C at their warmest in March, its coolest month, and 27°C in September, its warmest; the coolest hours of the day run from 18°C to 19°C through the year, and the average temperature over the year is 22°C around the clock. Rain is most likely around April and least likely around August. 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 winterDecember to February
High 26°CLow 19°CRain 8%
Winter in Buenos Aires has typical daily highs of about 26°C and lows of about 19°C, with a 8% chance of rain on a given day.
Buenos Aires weather in springMarch to May
High 25°CLow 19°CRain 14%
Spring in Buenos Aires has typical daily highs of about 25°C and lows of about 19°C, with a 14% chance of rain on a given day.
Buenos Aires weather in summerJune to August
High 26°CLow 18°CRain 6%
Summer in Buenos Aires has typical daily highs of about 26°C and lows of about 18°C, with a 6% chance of rain on a given day.
Buenos Aires weather in autumnSeptember to November
High 26°CLow 18°CRain 10%
Autumn in Buenos Aires has typical daily highs of about 26°C and lows of about 18°C, with a 10% 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 4% in August, the driest month, to 14% in April, the wettest.
What time of year is Buenos Aires windiest?
Winds in Buenos Aires are highest in September, averaging 2.0 m/s (7 km/h), and lightest in March, at 1.6 m/s (6 km/h). The prevailing wind is from the W.
What is the average temperature in Buenos Aires year round?
The average temperature in Buenos Aires over the whole year is 22°C. September is the hottest month, with highs of about 27°C; July is the coldest, with lows of about 18°C.