Your trips
Organize your trips easily with tabs
New York
San Carlos de Bariloche
Any date
+ Search
background

San Carlos de Bariloche in September: Weather, Average temperature and Climate

Take a look at past year’s weather for San Carlos de Bariloche in September and see if it is worth visiting.
Check flight prices to San Carlos de Bariloche on Avionero:
September

Weather in San Carlos de Bariloche in September 2025

OK Weather
Chill
☁️
Cloudy
San Carlos de Bariloche in September usually sees fair weather conditions, with an average daily high temperature of +46°F and roughly 4 sunny days. However, you should prepare for about 8 rainy days with an average precipitation of 57 mm. The weather is changeable so pack for every eventuality. Search flights in one click on Avionero.

Average weather

☀️
+46°F
Avg. max. temperature
+14°F
Min.
+68°F
Max.
57 mm
Total precipitation
80%
Avg. humidity
3 m/s
Avg. wind
4 ☀️
Sunny Days
12 ⛅️
Cloudy
8 🌦
Rainy
Our opinion: San Carlos de Bariloche has OK weather in September.

Average temperature in San Carlos de Bariloche in September

Here are the expected maximum, average and minimum temperatures in San Carlos de Bariloche for September based on the historical data.
Last Year
Historical Data

The temperature in September is +43°F on average, with a range between a maximum of +54°F during the day and a minimum of +23°F at night.

The average maximum temperature goes up 47% by the end of the month, compared with the beginning of the month, from +39°F to +54°F.

Is San Carlos de Bariloche warm or cold in September?

San Carlos de Bariloche is typically chill in September.

Maximum temperatures go up compared to the previous month from +43°F to +46°F. The minimum temperature also goes up from +30°F to +32°F.

Pack a jumper and a jacket as there will be cooler temperatures.

Take a look at how September is compared to other months in San Carlos de Bariloche:

Climate in San Carlos de Bariloche in September

San Carlos de Bariloche weather looks like this, on average, in September and the surrounding months.
AugustSeptemberOctober
Avg. temperature
+43°F+46°F+54°F
Min. temperature
+12°F+14°F+21°F
Max. temperature
+59°F+68°F+77°F
Rainfall
93 mm57 mm60 mm
Wind
3 m/s3 m/s3 m/s
Humidity
85%80%76%
Air pressure
1017 HPa1018 HPa1016 HPa
Sunny days
246
Cloudy days
101212
Rainy days
8810
Snowy days
1163

September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +43°F to +46°F during the day. As September arrives, the amount of rainfall goes down. On average, the rainfall volume decreases from 93 mm to 57 mm. It feels drier, as humidity decreases from 85% to 80%. The average wind speed doesn’t change much during September, staying around 3 m/s. The good news is there are likely to be more sunny days in September, from 2 to 4.

October brings much the same weather, it remains ok.

Wind

Wind speed in San Carlos de Bariloche in September based on historical data.
Last Year
Historical Data

The average wind speed is 4 m/s getting up to 9 m/s which is a medium breeze. You can feel it, especially getting out of the water.

The average wind speed in San Carlos de Bariloche is gradually decreasing during September, going from 8 m/s to 2 m/s over the course of the month.

Rain

Amount of rainfall in mm during September in San Carlos de Bariloche based on historical data.
Last Year
Historical Data
A chance of rain on a typical day in September stands at 47%, leading to total precipitation of around 148 mm. The maximum amount of rainfall per day is around 52 mm, which is considered heavy rain. September is a pretty wet month with over 14 rainy days, so don’t forget to pack an umbrella, raincoat, and a pair of wellies.
Here’s how September is compared with other months in the amount of precipitation, total mm:
San Carlos de Bariloche wettest month is June, where a typical day has a 33% chance of precipitation and 130 mm of rainfall per day. January, on the other hand, is the driest month with a mere 29% chance of precipitation and 31 mm of rainfall per day.

Snow

Amount of snow in mm during September in San Carlos de Bariloche based on historical data.
Last Year
Historical Data
The chance of snow on a typical day in September is 7%, for a monthly total of around 29 mm.

Here’s how September is compared with other months in the amount of snow, total mm:

How was the weather last September in San Carlos de Bariloche?

This is the weather in San Carlos de Bariloche in September 2023:
1 September
🌨️
+39°F
2 September
☁️
+40°F
3 September
☁️
+38°F
4 September
☁️
+41°F
5 September
☁️
+41°F
6 September
☁️
+43°F
7 September
🌧️
+40°F
8 September
☁️
+45°F
9 September
☁️
+44°F
10 September
🌧️
+41°F
11 September
🌧️
+40°F
12 September
☁️
+43°F
13 September
☁️
+43°F
14 September
🌧️
+46°F
15 September
🌧️
+46°F
16 September
🌨️
+35°F
17 September
☁️
+37°F
18 September
☁️
+41°F
19 September
☀️
+42°F
20 September
☁️
+39°F
21 September
☁️
+42°F
22 September
🌧️
+43°F
23 September
☁️
+45°F
24 September
☁️
+45°F
25 September
☀️
+47°F
26 September
☀️
+42°F
27 September
🌧️
+42°F
28 September
☀️
+47°F
29 September
☀️
+50°F
30 September
☀️
+54°F
In September 2023 San Carlos de Bariloche had 6 sunny days, 15 cloudy days, and 7 rainy days. The average maximum temperature was +43°F, with an absolute maximum of +54°F and a minimum of +36°F. The average humidity was 84%, with a maximum of 100% and a minimum of 42%. The average wind speed was 4 m/s, with a maximum of 15 m/s and a minimum of 0 m/s.
Are you planning a trip in September?

Climate Change Over the Years

This is how San Carlos de Bariloche climate has changed over the last 43 years.

The climate in San Carlos de Bariloche in September has not changed that much over the last 43 years.

The average temperature was the lowest in 1984 (+51°F) and the highest in 2021 (+59°F). The driest year was 1998 with only 484 mm of rainfall, and the wettest year was 2002 with 1138 mm.

FAQ

Frequently asked questions about the weather in San Carlos de Bariloche in September:

Is September a good time to visit San Carlos de Bariloche?

It’s always a good time to visit San Carlos de Bariloche, but the weather is changeable in September, so plan a mix of indoor and outdoor activities and exploring, and pack for every eventuality.

Can you sunbathe in San Carlos de Bariloche in September?

Not really, September is not the best time to sunbathe, unless you visit a local solarium.

Is San Carlos de Bariloche rainy in September?

San Carlos de Bariloche is often rainy in September. You may get a bit damp when outside, so pack an umbrella, and maybe even a raincoat.

Is it sunny in San Carlos de Bariloche in September?

Usually, it’s not very sunny in San Carlos de Bariloche in September, often it’s pretty cloudy. Pack for any eventuality; layering can help reduce the number of bulky items needed.

Other cities in Argentina

Check out the weather for other cities in Argentina.

Monthly weather in San Carlos de Bariloche

Source of the data

For this page, we’ve looked at the typical weather in San Carlos de Bariloche, based on historical hourly weather data from January 1, 1979, to December 31, 2023.

For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.