When planning a visit to San Luis Province in Argentina, it helps to know that temperatures typically range from 15°C (59°F) in July up to 28°C (82°F) during the peak of January. Our detailed climate overview is based on data from Merlo, the region's most well-known city. For more detailed climate information about other cities in the area, please see the section beneath the map further down the page.
The weather in San Luis Province during February, March, April, September, October and November is comfortably warm, with average temperatures ranging from 21°C (70°F) to 27°C (81°F).
When it comes to rainfall, San Luis Province sees significant variations throughout the year. January tends to be the wettest, receiving 127 mm (5 in) of rain, while July is much drier with just 13 mm (0.5 in). The driest conditions can be found during June, July and August, with rainfall staying below 17 mm (0.7 in).
