The best time to visit Buenos Aires is generally during spring (September–November) and autumn (March–May). Here’s why:
🌸 Spring (Sept–Nov) #
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Weather: Mild and pleasant (15–25°C / 59–77°F). 
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Atmosphere: Jacaranda trees bloom in November, painting the city purple—a stunning sight. 
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Crowds: Moderate, with fewer tourists than summer. 
🍂 Autumn (Mar–May) #
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Weather: Comfortable temperatures, low humidity (15–23°C / 59–73°F). 
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Events: Wine festivals, book fair, and cultural events. 
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Crowds: Quieter than peak summer months. 
☀️ Summer (Dec–Feb) #
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Weather: Hot and humid (30–35°C / 86–95°F), sometimes uncomfortable. 
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Good to know: Many porteños (locals) leave for the coast in January, so some shops/restaurants may close, but tourist areas stay active. 
❄️ Winter (Jun–Aug) #
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Weather: Mild compared to Europe/US winters (8–15°C / 46–59°F). 
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Vibe: Fewer tourists, lower prices. 
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Best for: Travelers who don’t mind cooler weather and want a quieter experience. 
✅ Best overall months: October–November and April–May → great weather, fewer crowds, and lots of cultural life.