What to pack for Buenos Aires in December
- t-shirts and light layers
- a light jacket for evenings
- a packable rain layer
Humidity averages 63%; max daily wind around 24 km/h.
How December compares
Best months in Buenos Aires: February–May & September–December. See the full best time to visit Buenos Aires guide.
Buenos Aires in December: the details
In December, Buenos Aires sees average daytime highs of 27°C (80°F) and overnight lows of 19°C (66°F). Rainfall totals roughly 72 mm across 7.7 rainy days, and the sun shines about 12.4 hours per day with 14.3 hours of daylight mid-month. Relative humidity averages 63%.
In context: December is the third-warmest month and the 7th-wettest in Buenos Aires. The sunniest month is December (12.4 h/day).
| Metric | December average |
|---|---|
| Daytime high | 27°C / 80°F |
| Overnight low | 19°C / 66°F |
| Rainfall | 72 mm over 7.7 rainy days |
| Sunshine | 12.4 h/day (14.3 h daylight) |
| Humidity | 63% |
| Travel score | 9.8 / 10 |
These figures are climate normals computed from the ERA5 weather reanalysis (2019–2024) for Buenos Aires, Argentina (-34.61, -58.38) — see our methodology. Actual conditions vary year to year.
Not set on Buenos Aires? Browse the best places to visit in December ranked by travel score.
Frequently asked questions
How hot is Buenos Aires in December?
Daytime highs in Buenos Aires in December average 27°C (80°F); nights drop to about 19°C.
Does it rain in Buenos Aires in December?
Expect around 7.7 rainy days and 72 mm of rainfall in December.
Is December a good time to visit Buenos Aires?
December is one of the best months to visit Buenos Aires. Overall travel score: 9.8/10. The best months are February–May & September–December.
Also good in December, near Buenos Aires
Where should you go next month?
Get one email a month with the destinations at their seasonal best. Double opt-in, unsubscribe anytime.