Buenos Aires in December
In December, Buenos Aires averages 29°C (84°F) during the day and 19°C (66°F) at night, with around 8 days of rain (130 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
December is a great month to visit Buenos Aires: pleasant temperatures and relatively few wet days.
How December compares to the rest of the year in Buenos Aires
December is one of the warmest months in Buenos Aires (3rd of 12) and moderately rainy compared to the rest of the year (4th of 12). Daytime temperature runs 7°C above the annual average (23°C). December runs 3°C warmer than November (26°C) and warms a further 1°C into January (30°C).
December sunrise & sunset in Buenos Aires
Times shown for Buenos Aires local time (America/Argentina/Buenos_Aires), calculated for the 15th of December. They shift by a few minutes day to day across the month.
Photography light in Buenos Aires — December
Golden-hour and blue-hour windows for the 15th of December, in Buenos Aires's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Buenos Aires in December
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on December's tier (High season) and Buenos Aires's popularity.
Crowds & pricing — December in Buenos Aires
This is a busy month in Buenos Aires — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: comfortable tourism weather
Sun & mosquito risk — December in Buenos Aires
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Buenos Aires in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 30°C / 86°F | 20°C / 68°F | 130 mm | 8 | — |
| February | 29°C / 84°F | 20°C / 68°F | 125 mm | 7 | — |
| March | 27°C / 81°F | 18°C / 64°F | 150 mm | 7 | — |
| April | 22°C / 72°F | 15°C / 59°F | 110 mm | 7 | — |
| May | 19°C / 66°F | 11°C / 52°F | 85 mm | 6 | — |
| June | 15°C / 59°F | 8°C / 46°F | 65 mm | 6 | — |
| July | 15°C / 59°F | 7°C / 45°F | 65 mm | 7 | — |
| August | 17°C / 63°F | 9°C / 48°F | 75 mm | 6 | — |
| September | 19°C / 66°F | 11°C / 52°F | 85 mm | 7 | — |
| October | 22°C / 72°F | 14°C / 57°F | 125 mm | 8 | — |
| November | 26°C / 79°F | 17°C / 63°F | 125 mm | 8 | — |
| December | 29°C / 84°F | 19°C / 66°F | 130 mm | 8 | — |
Other cities with similar December weather
🌍 See the full ranked list of climate twins for Buenos Aires in December →
Frequently asked questions
How hot is Buenos Aires in December?
In December, Buenos Aires averages a high of 29°C (84°F) and a low of 19°C (66°F) — generally warm.
Does it rain a lot in Buenos Aires in December?
December sees occasional rain in Buenos Aires, with about 8 rainy days on average.
Is December a good time to visit Buenos Aires?
December is warm. It suits travelers who are comfortable with warm weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Buenos Aires in December?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full December packing list for Buenos Aires for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.