Santiago del Estero Weather in September
Santiago del Estero in September averages 29°C (84°F) during the day and 14°C (57°F) at night. Some rainfall is typical for this time of year.
Rainfall in Santiago del Estero in September
Climate statistics over the past 30 years suggest around 3 days of rain, with 31 mm (1.2 in) average for the month. When rain does fall this month, it tends to come down hard. The low number of rain days makes each shower more significant.
Temperature in Santiago del Estero in September
Weather in Santiago del Estero is at its perfect in September. Highs reach 29°C (84°F), while nights settle around 14°C (57°F). The days can feel warmer than the evenings, so packing for both parts of the day is a good idea. At 14°C (57°F) overnight, it can feel quite a bit cooler after dark. Worth packing something warmer for evenings, but the cooler temperatures are ideal for sleeping.
Sunshine in Santiago del Estero in September
Enjoy a sunny month with about 191 hours of sunshine, the clear skies make Santiago del Estero even more beautiful.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit Santiago del Estero.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Santiago del Estero's climate page.
Santiago del Estero Temperature in September
Min Temperature
14°C (57°F)
Max Temperature
29°C (84°F)
Chance of Rain
10%
Precipitation
31 mm (1.2 in)
Rainy days
3 days
Humidity
51%
Sunshine
191 hours
Percentage Sunshine
53%
Daily Historical Temperatures
50-year average (1976-2025)
Based on our historical records, temperatures in Santiago del Estero typically rise from around 25°C (77°F) at the start of September to approximately 28°C (82°F) by the end. Nights are cool, with lows typically ranging from 9°C (48°F) to 14°C (57°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 for Santiago del Estero in September
Browse day-by-day weather records for Santiago del Estero spanning 51 years. Select any month and year to see actual temperatures, rainfall, and conditions recorded on each day.
Santiago del Estero historical weather extremes in September
Based on 49 years of weather observations in Santiago del Estero between 1976 and 2025, these are the recorded extremes.
- The warmest day in September was on September 19, 1994, with a maximum of 42°C (108°F).
- Santiago del Estero registered its coldest September night on September 6, 2008, with temperatures dropping to -4°C (25°F).
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
What to Wear in Santiago del Estero in September
Warm weather calls for comfortable, breathable clothing in September. Cotton t-shirts, shorts, light dresses, and sandals are perfect. You might still want a light layer for evenings or air-conditioned places (for example buses). Some rain is possible, so pack something to handle light showers. And with plenty of sunshine hours, don’t forget sunglasses, sunscreen, and maybe a sun hat.What To Do in Santiago del Estero in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
Check the conditions for any month of the year.
For a detailed overview over the year and the best time to visit Argentina, check out our Santiago del Estero's climate page.
Temperature Rainfall Sunshine Humidity
See the full Santiago del Estero climate overview or explore weather in Argentina.
