Buenos Aires in september: average Weather, Temperature and Climate
Weather in Buenos Aires in september 2025
The weather in Buenos Aires in september comes from statistical datas on the last years. You can view the weather statistics for all the month, but also by using the tabs for the beginning, the middle and the end of the month.
Average weather throughout september
good weather
Weather at 6am
54°F
Clear/Sunny
47% of time
23%
11%
10%
Weather at 12pm
61°F
Clear/Sunny
53% of time
21%
12%
11%
Weather at 6pm
61°F
Clear/Sunny
54% of time
18%
12%
10%
Weather at 3am
56°F
52%
24%
14%
5%
Evolution of daily average temperature and precipitation in Buenos Aires in september
These charts show the evolution of average minimum/maximum temperatures as well as average daily precipitation volume in Buenos Aires in september.
The climate of Buenos Aires in september is good
the weather in Buenos Aires in september is relatively dry (with 4.3in of precipitation over 5 days). The weather is worst than the previous month since in august there is an average of 4.2in of precipitation over 4 days.
The climate is fairly cool here september, but it is liveable by dressing hot. The thermometer averaged maximum of 65°F. On average, the recorded minimum temperature is 54°F. Thus, the mean temperature average on this month of september in Buenos Aires is 59°F. Note that seasonal normals are in contrast with those observed in Buenos Aires in september with a maximum record of 81°F in 2013 and a minimum record of 38°F in 2009. You can expect to have about 15 days with temperatures over 65°F, or 50% of the month.
On this month of september, day length in Buenos Aires is generally 11:53. The sun rises at 06:52 and sets at 18:45.
With a good weather, the month of september is a good time to go in this locality.
Seasonal average climate and temperature of Buenos Aires in september
Check below seasonal norms These statistics are generated from the weather statements earlier years of september.
| September | |||||
| Outside temperature | |||||
| Average temperature | 59°F | ||||
| Highest temperature | 65°F | ||||
| Lowest temperature | 54°F | ||||
| Highest record temperature | 81°F (2013) | ||||
| Lowest record temperature | 38°F (2009) | ||||
| Number of days at +65°F | 15 day(s) (50%) | ||||
| Sea temperature | |||||
| Average sea temperature | 58°F | ||||
| Lowest sea temperature | 54°F | ||||
| Highest sea temperature | 62°F | ||||
| Wind | |||||
| Wind speed | 22km/h | ||||
| Wind temperature | 50°F | ||||
| Precipitation (rainfall) | |||||
| Rainfall | 4.3in | ||||
| Number of days with rainfall | 5 day(s) (16%) | ||||
| Record daily rainfall | 2.6in (2021) | ||||
| Other climate data | |||||
| Humidity | 82% | ||||
| Visibility | 9.48km | ||||
| Cloud cover | 34% | ||||
| UV index | 5 | ||||
| Daily sunshine hours | 11 | ||||
| Sunrise and sunset | |||||
| Time of sunrise | 06:52 | ||||
| Time of sunset | 18:45 | ||||
| Length of day | 11:53 | ||||
| Our opinion about the weather in september | |||||
| Our opinion at whereandwhen.net | good | ||||
How was the weather last september?
Here is the day by day recorded weather in Buenos Aires in september 2024:
50°F to 58°F
52°F to 61°F
54°F to 63°F
52°F to 63°F
47°F to 56°F
52°F to 61°F
54°F to 63°F
56°F to 63°F
54°F to 63°F
59°F to 65°F
54°F to 61°F
52°F to 58°F
52°F to 59°F
50°F to 63°F
50°F to 59°F
54°F to 65°F
58°F to 65°F
58°F to 68°F
61°F to 65°F
56°F to 70°F
58°F to 68°F
61°F to 68°F
56°F to 67°F
54°F to 65°F
54°F to 67°F
54°F to 58°F
56°F to 63°F
58°F to 68°F
61°F to 72°F
65°F to 72°F
Map: other cities in Argentina in september
Cities near Buenos Aires:
| Quilmes in september | good weather |
| Almte. Brown in september | good weather |
| La Plata in september | good weather |
| Magdalena in september | good weather |
| San Antonio de Areco in september | tolerable weather |
| Concepción del Uruguay in september | good weather |
| San Clemente del Tuyu in september | tolerable weather |
| Azul in september | tolerable weather |
| Rosario in september | good weather |
| Tandil in september | tolerable weather |
| Villa Gesell in september | tolerable weather |
| Concordia in september | good weather |
Click over cities on the map for information about the weather in september.
Buenos Aires
perfect weather
good
tolerable
bad
very bad
Weather data for Buenos Aires in september:
Weather data for Buenos Aires for september are derived from an average of the weather forecast since 2009 in Buenos Aires. There is a margin of error and these forecasts are to be considered as general information only. The weather in Buenos Aires can vary slightly from year to year, but this data should limit surprises. So you can pack your bags or check for the best time in year to go to Buenos Aires.