Weather in Salta in September 2025
Average weather
Average temperature in Salta in September
Going from a maximum of +35°C during the day to a minimum of +3°C during the night, the temperature in September averages around +24°C.
The average maximum temperature goes down 28% by the end of the month, compared with the beginning of the month, from +29°C to +20°C.
Is Salta warm or cold in September?
Salta is typically mild in September.
Maximum temperatures go up compared to the previous month from +20°C to +22°C. The minimum temperature also goes up from +7°C to +9°C.
Pack a light jacket as it will be warm in the day and cool in the evenings.
Take a look at how September is compared to other months in Salta:
Climate in Salta in September
| August | September | October | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +20°C | +22°C | +24°C | ||||
| Min. temperature | ||||||
| -3°C | -4°C | +3°C | ||||
| Max. temperature | ||||||
| +34°C | +35°C | +37°C | ||||
| Rainfall | ||||||
| 52 mm | 81 mm | 167 mm | ||||
| Wind | ||||||
| 1 m/s | 1 m/s | 1 m/s | ||||
| Humidity | ||||||
| 71% | 72% | 76% | ||||
| Air pressure | ||||||
| 1015 HPa | 1014 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 14 | 11 | 5 | ||||
| Cloudy days | ||||||
| 5 | 3 | 3 | ||||
| Rainy days | ||||||
| 12 | 16 | 21 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
September weather is still as good as in August. It’s getting warmer as September arrives. The average maximum temperature goes up from +20°C to +22°C during the day. Prepare for more rain. Average rainfall goes from 52 mm to 81 mm. Humidity rises from 71% to 72%. The average wind speed doesn’t change much during September, staying around 1 m/s. The days becoming less sunny, going from 14 sunny days in August to 11 in September.
Next month (October) brings a further decline in the weather.
Wind
The average wind speed is 3 m/s getting up to 4 m/s which is a light breeze; barely moving the tree leaves.
The average wind speed in Salta is gradually increasing during September, going from 2 m/s to 2 m/s over the course of the month.
Rain
How was the weather last September in Salta?
Climate Change over Years
The climate in Salta in September has not changed much over the last 43 years.
The average temperature was the lowest in 1992 (+21°C) and the highest in 2023 (+24°C). The driest year was 2020 with only 1490 mm of rainfall, and the wettest year was 1985 with 3034 mm.
FAQ
Is September a good time to visit Salta?
Can you sunbathe in Salta in September?
Is Salta rainy in September?
Is it sunny in Salta in September?
Other cities in Argentina
Monthly weather in Salta
Source of the data
For this page, we’ve looked at the typical weather in Salta, 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.