The best time to go to Portillo, Valparaíso, Chile is during the Southern Hemisphere's winter, specifically from June to September, when the ski season is in full swing.During these months, you'll experience optimal snow conditions for skiing and snowboarding, with regular fresh powder. The weather is generally crisp and sunny, great for enjoying the slopes and the stunning Andean scenery. This period also coincides with the resort's full operation, meaning all lifts, restaurants, and activities are available.For those looking for a lively option and excellent snow, July and August are particularly popular, often featuring events and a bustling resort experience.