Argentina in september: average Weather, Temperature and Climate, Where to go?
Weather in Argentina in september 2025
Here, check out the weather forecast for september for most popular cities in Argentina. These predictions are probabilities for the month of september from weather reports for many years. The percentage indicates the probability of having the weather indicated.
Average weather in september in Buenos Aires
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%
More information about the weather in Buenos Aires in september
Where to go in Argentina in september?
Where to go in Argentina in september: destination map
Where to go in each region in september?
| Cuyo (Mendoza, La Rioja, San Rafael...) | 31°F to 72°F | 0 à 4 days | good weather* | |
| North West of Argentina (Salta, Purmamarca (Seven Colors Mountain), Catamarca (San Fernando del Valle de Catamarca)...) | 67°F to 86°F | 1 à 4 days | good weather* | |
| Northeast of Argentina (Cordoba, Iguazú, Rosario...) | 70°F to 83°F | 2 à 7 days | good weather* | |
| Pampas (Buenos Aires, Mar del Plata, Bahía Blanca...) | 58°F to 68°F | 3 à 5 days | 52°F to 59°F | tolerable weather* |
| Patagonia (El Calafate, Puerto Madryn, San Carlos de Bariloche...) | 25°F to 67°F | 0 à 21 days | 41°F to 52°F | very bad weather* |
| Tierra del Fuego (Ushuaia, Rio Grande, Isla de los Estados...) | 43°F to 45°F | 3 à 7 days | very bad weather |
Where should you go in Argentina in september when it comes to the weather?
Remember:
The climate in Argentina in september ranges from good to very bad depending on the region and city.
Although it is not perfect the weather in Argentina in september is, according to seasonal norms, quite good in Tilcara, Rosario, Salta, Mendoza, Iguazú, Buenos Aires, Cordoba, Bahía Blanca and La Rioja. I allows to appreciate tours in these locations. And even why not take a little time to relax under the sun!
If you do not go to spend your time in a lounger by the pool, but, for example to go sightseeing, the cities of Mar del Plata, Comodoro Rivadavia and Valdés have a ok but correct weather for it in september. Eventually, avoid going in the cities of Patagonia, El Calafate, Ushuaia, Río Gallegos and San Carlos de Bariloche in september because the climate is frankly bad.
Climate in Argentina in september
Climate in Buenos Aires in september
In the month of september, the mean temperature in Buenos Aires is 59°F (maximum temperature is 65°F and minimum temperature is 54°F). The climate is rather cold here in this month, but it is livable when dressing cosy. With 4.3in over 5 days, you risk getting wet slightly throughout your journey. But this is rather moderate and it will not be continuous.
With a good climate, september is an advisable month to go in that area.
| September | |||
| Average temperature | 59°F | ||
| Highest temperature | 65°F | ||
| Lowest temperature | 54°F | ||
| Sea temperature | 58°F | ||
| Rainfall | 4.3in | ||
| Number of days with rainfall | 5 day(s) (16%) | ||
| Humidity | 82% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 34% | ||
| Length of day | 11:53 | ||
| Our opinion at whereandwhen.net | good |
Climate in Cordoba in september
In the month of september, the mean temperature in Cordoba is 63°F (maximum temperature is 74°F and minimum temperature is 52°F). The climate quite pleasant here in this month. With just 1.7in over 3 days, rainfall is infrequent during your vacations.
With good weather conditions, september is a recommended month to go in Cordoba in Argentina.
| September | |||
| Average temperature | 63°F | ||
| Highest temperature | 74°F | ||
| Lowest temperature | 52°F | ||
| Rainfall | 1.7in | ||
| Number of days with rainfall | 3 day(s) (9%) | ||
| Humidity | 69% | ||
| Daily sunshine hours | 12 | ||
| Cloud cover | 21% | ||
| Length of day | 11:54 | ||
| Our opinion at whereandwhen.net | good |
Climate in El Calafate in september
In the month of september, the mean temperature in El Calafate is 38°F (maximum temperature is 43°F and minimum temperature is 32°F). The climate is quite cold here in this month. Plan a sweater! With about 1.7in over 3 days, rainfall is infrequent for your stay.
| September | |||
| Average temperature | 38°F | ||
| Highest temperature | 43°F | ||
| Lowest temperature | 32°F | ||
| Rainfall | 1.7in | ||
| Number of days with rainfall | 3 day(s) (9%) | ||
| Humidity | 81% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 33% | ||
| Length of day | 11:44 | ||
| Our opinion at whereandwhen.net | very bad |
Climate in Iguazú in september
In the month of september, maximum temperature is 83°F and minimum temperature is 63°F (for an average temperature of 74°F). The climate good in that locality in the month of september. With 5.9in over 6 days, rain may occur throughout your trip. But this is moderate and it will not be continuous.
With a good climate, the month of september is a good time to go in this locality in Argentina.
| September | |||
| Average temperature | 74°F | ||
| Highest temperature | 83°F | ||
| Lowest temperature | 63°F | ||
| Rainfall | 5.9in | ||
| Number of days with rainfall | 6 day(s) (20%) | ||
| Humidity | 86% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 28% | ||
| Length of day | 11:57 | ||
| Our opinion at whereandwhen.net | good |
Climate in Mar del Plata in september
In the month of september, maximum temperature is 58°F and minimum temperature is 49°F (for an average temperature of 54°F). The climate is rather cool in that area in september, but it is endurable by dressing warm. With 3.3in over 4 days, you risk getting wet slightly during your vacations. But this is pretty moderate and you will not be too bothered by it.
With a correct climate, the month of september is okay (but not good time) for traveling in Mar del Plata.
| September | |||
| Average temperature | 54°F | ||
| Highest temperature | 58°F | ||
| Lowest temperature | 49°F | ||
| Sea temperature | 51°F | ||
| Rainfall | 3.3in | ||
| Number of days with rainfall | 4 day(s) (14%) | ||
| Humidity | 84% | ||
| Daily sunshine hours | 11 | ||
| Cloud cover | 36% | ||
| Length of day | 11:51 | ||
| Our opinion at whereandwhen.net | tolerable |
All cities in Argentina in september
| Buenos Aires in september | good weather |
| Cordoba in september | good weather |
| El Calafate in september | very bad weather |
| Iguazú in september | good weather |
| Mar del Plata in september | tolerable weather |
| Mendoza in september | good weather |
| Patagonia in september | very bad weather |
| Salta in september | good weather |
| Ushuaia in september | very bad weather |
| Bahía Blanca in september | tolerable weather |
| Isla de los Estados in september | very bad weather |
| La Rioja in september | perfect weather |
| Puerto Madryn in september | good weather |
| Purmamarca (Seven Colors Mountain) in september | tolerable weather |
| Reconquista in september | good weather |
| Rio Grande in september | very bad weather |
| Rosario in september | good weather |
| San Carlos de Bariloche in september | very bad weather |
| Catamarca (San Fernando del Valle de Catamarca) in september | tolerable weather |
| San Rafael in september | tolerable weather |
| Santiago del Estero in september | perfect weather |
| Aconcagua in september | very bad weather |
| Almte. Brown in september | good weather |
| Cabo San Pablo in september | very bad weather |
Weather data for Argentina in september:
Weather data for Argentina in september is derived from an average of the weather forecast since 2009 in Argentina. There is a margin of error and these forecasts are to be considered as general information only. The weather in Argentina can vary slightly from year to year, but these predictions should limit surprises. So you can pack your bags and check when is the best time to go to Argentina.