Buenos Aires has a humid subtropical climate with warm summers, mild winters, and plenty of humidity year-round. Here’s a month-by-month breakdown so you know what to expect:
- January – Peak summer. Hot and humid with average highs around 30°C (86°F). Many locals leave the city for vacation, so it feels quieter.
- February – Still hot and muggy, similar to January, with frequent afternoon thunderstorms. Carnival celebrations take place this month.
- March – Late summer. Warm days (around 27°C/81°F) but evenings start cooling down. A good month for outdoor exploring.
- April – Early autumn. Pleasant and mild with highs around 23°C (73°F). Parks and trees change color, making it a beautiful time to visit.
- May – Cooler autumn weather. Highs around 20°C (68°F), lows near 12°C (54°F). Generally dry and comfortable.
- June – Start of winter. Mild to cool, with highs near 16°C (61°F) and chilly nights around 8°C (46°F). Rarely extreme cold.
- July – Midwinter. The coolest month. Daytime highs around 15°C (59°F), nights around 7°C (45°F). Occasional damp, gray days.
- August – End of winter. Still cool but slowly warming. Highs about 17°C (63°F). A windy month.
- September – Early spring. Days warm up to 19°C (66°F). Flowers start blooming, making the city lively again.
- October – Spring in full swing. Pleasant temperatures (around 22°C/72°F). Sometimes windy or rainy, but very green.
- November – Late spring. Warm, with highs around 26°C (79°F). Jacaranda trees bloom, painting the city purple. One of the most scenic months.
- December – Start of summer. Hot and humid, highs around 29°C (84°F). Busy festive season with lots of events.
In short:
-
Best weather: April–May and September–November (mild, comfortable, scenic).
-
Hottest months: December–February.
-
Coolest months: June–August (but still mild compared to many cities).
