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Salta Weather in September
September is one of the excellent months to visit Salta, with daytime temperatures of 21°C (70°F) and lows of 8°C (46°F) at night. Do note that quite a bit of rainfall is typical, averaging around 76 mm (3 in).
Rainfall in Salta in September
You can expect rain on around 3 days based on historical patterns, with 76 mm (3 in) average for the month. The rain this month typically falls in concentrated bursts rather than all-day showers. Expect a few heavier spells rather than constant grey skies.
Temperature in Salta in September
The temperature in Salta in September is excellent. Daytime highs reach 21°C (70°F), with nights dropping to 8°C (46°F). Temperatures can feel cooler in the morning and evening, so layering is often the best approach. Nights fall to 8°C (46°F), which is cold enough to feel it indoors too. A good thick duvet makes all the difference for a comfortable night's sleep.
Sunshine in Salta in September
Expect a lot of sunshine this month, with about 197 hours of sun. These sunny conditions add to the overall experience.If you're inclined towards comfortable temperatures and drier conditions, September is a good time to visit Salta.
Salta Temperature in September
Min Temperature
8°C (46°F)
Max Temperature
21°C (70°F)
Chance of Rain
9%
Precipitation
76 mm (3 in)
Rainy days
3 days
Humidity
58%
Sunshine
197 hours
Percentage Sunshine
45%
Salta Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in Salta - and find the best time to visit.
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Salta typically stay consistent throughout September, with daily highs averaging around 21°C (70°F). Nights are cool, with lows typically ranging from 6°C (43°F) to 10°C (50°F).
Average temperatures in September
Daily Historical Precipitation
50-year average (1976-2025)
Average daily rainfall for each day of the month based on long-term records.
Average precipitation in September
Historical weather records for Salta in September
Browse day-by-day weather records for Salta spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Salta historical weather extremes in September
According to our 50 years of weather records for Salta, the following extremes were recorded between 1976 and 2026.
- On September 30, 2024, temperatures climbed to 38°C (100°F), marking the warmest September day on record.
- Nighttime temperatures dropped to -3°C (27°F) on September 1, 2005, marking the coldest September night on record.
Best Places in Argentina in September
Find out more about the weather in Argentina and which places have the best travel conditions in this month. See all of Argentina in September →
perfect weather
pleasant
tolerable
unpleasant
poor
Perfect weather is subjective. On this map perfect weather has been defined with temperatures between 20°C (68°F) and 29°C (84°F) and not too much precipitation (less than 90 mm (3.5 in) a month).
What to Wear in Salta in September
Pleasant temperatures in September mean you can pack light but flexibel pieces. Think cotton t-shirts, comfortable walking shorts, and one warmer layer for evenings. A light sweater or denim jacket works well. Rain gear is recommended, you can expect wet weather on multiple days. Don't forget sun protection, sunglasses, sunscreen, and a hat. These are all good ideas with this much sunshine.
What To Do in Salta in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
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Swimming6/10 -
Cycling9/10 -
Walking9/10 -
Camping4/10 -
Outdoor sports9/10
Salta 3-Day Forecast
More climate data for Salta
Temperature Rainfall Sunshine Humidity
See the full Salta climate overview or explore weather in Argentina.
Popular in September
Where to go in September - average daytime high across popular destinations.
Córdoba
23°C (73°F) Salta21°C (70°F) Mendoza20°C (68°F) Buenos Aires
20°C (68°F) Mar del Plata16°C (61°F) San Martín de los Andes
8°C (46°F) San Carlos de Bariloche8°C (46°F) Bucket list
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