Weather in San Carlos de Bariloche in September 2025
Average weather
Average temperature in San Carlos de Bariloche in September
Going from a maximum of +12°C during the day to a minimum of -5°C during the night, the temperature in September averages around +6°C.
The average maximum temperature goes up 47% by the end of the month, compared with the beginning of the month, from +4°C to +12°C.
Is San Carlos de Bariloche warm or cold in September?
San Carlos de Bariloche is typically cool in September.
Maximum temperatures go up compared to the previous month from +6°C to +8°C. The minimum temperature also goes up from -1°C to 0°C.
Pack a sweater 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
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +6°C | +8°C | +12°C | ||||
| Min. temperature | ||||||
| -11°C | -10°C | -6°C | ||||
| Max. temperature | ||||||
| +15°C | +20°C | +25°C | ||||
| Rainfall | ||||||
| 93 mm | 57 mm | 60 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Humidity | ||||||
| 85% | 80% | 76% | ||||
| Air pressure | ||||||
| 1017 HPa | 1018 HPa | 1016 HPa | ||||
| Sunny days | ||||||
| 2 | 4 | 6 | ||||
| Cloudy days | ||||||
| 10 | 12 | 12 | ||||
| Rainy days | ||||||
| 8 | 8 | 10 | ||||
| Snowy days | ||||||
| 11 | 6 | 3 | ||||
September often has better weather than August. It’s getting warmer as September arrives. The average maximum temperature goes up from +6°C to +8°C 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
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
Snow
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?
Climate Change over Years
The climate in San Carlos de Bariloche in September has not changed much over the last 43 years.
The average temperature was the lowest in 1984 (+10°C) and the highest in 2021 (+15°C). The driest year was 1998 with only 484 mm of rainfall, and the wettest year was 2002 with 1138 mm.
FAQ
Is September a good time to visit San Carlos de Bariloche?
Can you sunbathe in San Carlos de Bariloche in September?
Is San Carlos de Bariloche rainy in September?
Is it sunny in San Carlos de Bariloche in September?
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.