Buenos Aires Weather: September
 |
Average Day Temperature: | 63.8°F |
|
Average Night Temperature: | 54.5°F |
|
Sea Water Temperature: | 62.7°F |
|
Number of Sunny Days: | 17 days |
| Sunshine Hours: | 11.4 - 12.4 hours | |
|
Number of Rainy Days: | 3 days |
| Precipitation Totals: | 2.7 in | |
| detailed information | ||
forecast
| Buenos Aires |
Temperature
| Buenos Aires |
Air Temperature in September, °F
The highest day temperature in September 2025 was 72°F. The lowest night temperature was 41°F. The average values for day and night temperatures during September were 61.4°F и 54.2°F respectivly.
Buenos Aires Water Sea Temperature in September, °F
The average sea surface temperature in September 2025 for Buenos Aires was 64.0°F. The maximum and minimum values were 60.6°F and 68.6°F respectively.
Most of the days in September are sunny but you can also expect cloudy and gloomy days.
Precipitation Totals in September, in
Precipitation total in September for Buenos Aires is 2.7 in.
The average wind speed in September is 10.6 mph. This value is relatively stable throughout the year.
We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Buenos Aires in September is 8.1 hours.
Buenos Aires on the Weather Map
| Bahia Blanca |  |
+70 |
| Buenos Aires | |
+78 |
| Comodoro Rivadavia | |
+52 |
| Cordoba | |
+74 |
| Corrientes | |
+70 |
| El Chalten |  |
+34 |
| Mar del Plata |  |
+62 |
| Mendoza | |
+78 |
| Miramar | |
+60 |
| Puerto Madryn | |
+64 |
| Rio Gallegos | |
+40 |
| Salta |  |
+62 |
| San Carlos de Bariloche | |
+36 |
| San Juan | |
+84 |
| Ushuaia | |
+28 |
| 0600 |  |
76°F | NE 4 mph |
| 0900 |  |
82°F | S 6 mph |
| 1200 | |
84°F | S 10 mph |
| 1500 | |
90°F | SW 11 mph |
| 1800 | |
92°F | S 9 mph |
| 2100 |  |
86°F | SE 6 mph |
| 0000 |  |
82°F | NE 5 mph |
| 0300 | |
76°F | NW 6 mph |