Argentina weather in September

Planning a getaway to Argentina this September and curious about the weather you should prepare for? Discover all the vital details you need on this page, solving your puzzle:

What is the weather like in Argentina in September?

The weather in Argentina in September can be quite varied, with temperatures that range from very cold to very warm and precipitation levels ranging from low to heavy.

Based on our climate data spanning from 1990-2020, the average maximum temperature is very cold in Los Penitentes at -5°C to very warm in Tartagal at 30°C. Nighttime temperatures generally drop to 15°C in Tartagal and -14°C in Los Penitentes.

In September, precipitation varies across different areas. From low rainfall in La Quiaca with an average of 8.7 mm to heavy rainfall in Chilecito with 241 mm. The city Buenos Aires usually sees around 186 hours of sunlight, indicating a moderately sunny period.

For specific regional insights in Argentina for September, refer to the map provided below. For an in-depth overview of the yearly weather conditions, do visit our Argentina climate page.

Where to go in Argentina in September

Find the average weather conditions in September for the most popular destinations in Argentina on the map below. Click on a destination dot for more detailed information.

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Legend perfect weather pleasant tolerable unpleasant poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C and 29°C and not too much precipitation (less than 90 mm a month).

Popular destinations in Argentina

What is the weather like in September for the 5 most popular destinations in Argentina?

Average weather in Buenos Aires

In September Buenos Aires generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 9°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Buenos Aires
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
18°C 
7°C 
177 hours 
65 mm 
7 days 
20°C 
9°C 
186 hours 
76 mm 
7 days 
October   >> October
>>  
23°C 
12°C 
226 hours 
111 mm 
10 days 
Climate in Buenos Aires

Average weather in San Carlos de Bariloche

In September San Carlos de Bariloche generally has low temperatures with maximum daytime temperatures around 8°C, minimum nighttime temperatures around -2°C and moderate monthly snow/rainfall. So on average the conditions are poor that month.

San Carlos de Bariloche
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly snow/rainfall precipitationSnow/rainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
6°C 
-2°C 
147 hours 
154 mm 
13 days 
poor 
8°C 
-2°C 
191 hours 
87 mm 
10 days 
poor 
October   >> October
>>  
11°C 
0°C 
241 hours 
85 mm 
8 days 
Climate in San Carlos de Bariloche

Average weather in Mar del Plata

In September Mar del Plata generally has moderate temperatures with maximum daytime temperatures around 16°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are tolerable that month.

Mar del Plata
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
15°C 
6°C 
171 hours 
61 mm 
8 days 
16°C 
7°C 
177 hours 
64 mm 
7 days 
October   >> October
>>  
18°C 
10°C 
212 hours 
84 mm 
10 days 
Climate in Mar del Plata

Average weather in Mendoza

In September Mendoza generally has pleasant temperatures with maximum daytime temperatures around 20°C, minimum nighttime temperatures around 7°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Mendoza
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
17°C 
4°C 
217 hours 
30 mm 
2 days 
20°C 
7°C 
221 hours 
38 mm 
3 days 
October   >> October
>>  
24°C 
10°C 
275 hours 
58 mm 
3 days 
Climate in Mendoza

Average weather in Salta

In September Salta generally has pleasant temperatures with maximum daytime temperatures around 21°C, minimum nighttime temperatures around 8°C and moderate monthly rainfall. So on average the conditions are perfect that month.

Salta
minimum temparatureMax temperature minimum temparatureMax temp
maximum temparatureMin temperature maximum temparatureMin temp
sun hoursMonthly sun hours sun hoursSun hours
precipitationMonthly rainfall precipitationRainfall
rain daysMonthly rainy days rain daysRainy days
conditionsWeather conditions conditionsWeather
<<   August August
<<  
20°C 
6°C 
207 hours 
50 mm 
2 days 
21°C 
8°C 
197 hours 
76 mm 
3 days 
October   >> October
>>  
23°C 
12°C 
202 hours 
156 mm 
5 days 
Climate in Salta

Is your destination not in the list? Have a look at other destinations in Argentina.

Is September the best time to visit Argentina?

We believe that September is one of the best times to visit Argentina with overall perfect weather in Buenos Aires. It's worth noting that weather conditions might differ depending on the location you visit.

On average, the best time to visit Argentina is in March, April, May, September, November and December with generally perfect weather in Buenos Aires. The weather in June and July, on the other hand, tends to be tolerable.

Interested in more climate information?

We have much more information about the climate in Argentina. Interested in the weather conditions in a specific month? Select the month below.

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  • Weather and climate has detailed information for every country in the world. Are you going to Argentina? Get detailed historical weather averages for many cities in Argentina.

    Not sure yet where to go? We now have a tool which recommends destinations that suit your ideal climate conditions. Find out where to go with our weather planner.