San Luis Weather & Climate: Best Time to Visit
Average temperatures, rainfall, sunshine and the best time to visit San Luis.
Climate overview of San Luis
San Luis, San Luis Province, Argentina, sees big temperature differences between seasons, with January peaking at 31°C (88°F) and July dropping to 17°C (63°F).
San Luis sees a moderate amount of rainfall, totalling around 693 mm (27 in) per year. It experiences a distinct dry season from May to September, with very warm summers and mild winters, creating some seasonal variation.
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.
Monthly Temperature in San Luis
Visitors to San Luis can expect significant temperature changes throughout the year. Average maximum daytime temperatures range from a very warm 31°C (88°F) in January, the warmest time of the year, to a moderate 17°C (63°F) during cooler months like July.
At night, you can expect temperatures ranging from 19°C (66°F) in January to around 4°C (39°F) during July.
Check out our detailed temperature page for more information.
Temperature ranges by month
Rainfall in San Luis
Generally, San Luis experiences moderate precipitation patterns, averaging 693 mm (27 in) yearly. Significant seasonal changes in precipitation occur throughout the year. In the wettest month, January it receives high rainfall, averaging 102 mm (4 in) of precipitation, recorded across 10 rainy days. In contrast, the driest month June brings less rainfall, with 11 mm (0.4 in) over 2 rainy days. For more details, please visit our San Luis Precipitation page.
The mean monthly precipitation over the year, including rain, hail, and snow
The average number of days each month with precipitation
Best Time to Visit San Luis
Monthly ratings reflect general weather comfort, based on daytime temperature and rainfall. Swimming and winter conditions are highlighted separately where relevant.
- Best overall: March, April, May, June, August, September, October and November
- Warmest weather: January, February and December
- Fewer rainy days: May, June, July, August and September
- Seasonal pattern: A distinct dry season from May to September, with very warm summers and mild winters
Frequently asked questions about the climate in San Luis
What is the best time to visit San Luis?
March, April, May, June, August, September, October and November typically offer the most optimal weather in San Luis. In contrast, January and December tend to have less optimal conditions. San Luis has a distinct dry season from May to September, with very warm summers and mild winters.
What temperatures can I expect in San Luis?
Daytime highs range from 17°C (63°F) in July to 31°C (88°F) in January. Nighttime lows range from 4°C (39°F) to 19°C (66°F). Temperatures vary considerably through the year.
How much rain does San Luis get?
Annual rainfall is around 693 mm (27 in). January is the wettest month with 102 mm (4 in), while June is the driest with 11 mm (0.4 in).
San Luis 3-Day Forecast
San Luis 3-Day Forecast
San Luis on the map
San Luis is highlighted - select any city to see its climate.
Popular this month
Where to go in July - average daytime high across popular destinations.
Córdoba
18°C (64°F) Salta
17°C (63°F) Buenos Aires16°C (61°F) Villa Carlos Paz16°C (61°F) Mendoza14°C (57°F) Mar del Plata13°C (55°F) San Carlos de Bariloche
4°C (39°F) San Martín de los Andes4°C (39°F) 
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