The 10 most alternative cities in South America
Discover South America's top 10 alternative cities! From Valparaíso's vibrant streets to La Paz's high-altitude charm and Medellín's innovative spirit.
San Luis Weather in September
September is one of the excellent months to visit San Luis, with daytime temperatures of 23°C (73°F) and lows of 9°C (48°F) at night. Some rainfall is typical for this time of year.
Rainfall in San Luis in September
Typically around 4 days of rainfall are expected, averaging 32 mm (1.3 in) for the month. Showers tend to be short but heavy rather than persistent drizzle. When it rains, it usually means it, but it doesn't last long.
Temperature in San Luis in September
San Luis in September has excellent weather. Days reach 23°C (73°F) and nights cool to 9°C (48°F). Overall, the month follows a fairly predictable daily temperature pattern. Nights drop to 9°C (48°F). Cold nights like these are actually great for sleeping well, as long as you have a warm enough duvet.If you favor pleasant temperatures and minimal rainfall, September is one of the best months to visit San Luis.
San Luis Temperature in September
Min Temperature
9°C (48°F)
Max Temperature
23°C (73°F)
Chance of Rain
13%
Precipitation
32 mm (1.3 in)
Rainy days
4 days
San Luis Weather by Month
Pick a month to see the average temperature, rainfall and sunshine in San Luis - and find the best time to visit.
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 San Luis in September
Comfortable temperatures call for an easy wardrobe in September. Pack summer basics like t-shirts and shorts, but include a light jacket for cooler moments. A pair of comfortable walking shoes is essential. Light rain is possible, so consider bringing a small umbrella or rain jacket.
What To Do in San Luis in September
We rated the following activities from 1 (least suitable) to 10 (best) to do.
-
Cycling10/10 -
Walking10/10 -
Camping5/10 -
Outdoor sports10/10
San Luis 3-Day Forecast
More climate data for San Luis
See the full San Luis 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
Need travel inspiration? Check out our bucket list articles and be inspired.
The 10 most alternative cities in South America
Warm Days, Cool Nights: 8 Destinations With the Perfect Day-Night Temperature
Prefer warm sunny days but cool evenings? Compare eight destinations with daytime temperatures of around 25–30°C, cooler nights, low rainfall and plenty of sunshine.
Be amazed by Buenos Aires
The city of beautiful museums, cute streets, green parks, lots of good food, interesting local neighborhoods and impressive historical buildings.
Argentina in November: Where to Go for the Best Weather
Compare November weather in Mendoza, Buenos Aires, Cafayate, Bariloche and Ushuaia to find Argentina's warmest, sunniest and driest places.