Buenos Aires weather in December
Buenos Aires in December averages 23°C (74°F), 107 mm of rain and 9.2 hours of sun a day.
Of the twelve months in Buenos Aires, December is the third warmest, the fourth wettest and the second sunniest.
- Average temp
- 23°C (74°F)
19–28°C · 65–82°F
- Rainfall
- 107 mm
Showers likely
- Sunshine
- 9.2 h
hours per day
What is Buenos Aires like in December?
Daytime
Days are warm, typically in the mid-20s°C or above.
Rain
Some rain is likely; pack for showers.
Evening
Evenings stay warm.
What should I pack for Buenos Aires in December?
High-factor sun cream
With 9.2 hours of sun a day, burn time is short even in shade.
Sunglasses and a brimmed hat
Midday glare is the part people underpack for, not the heat itself.
A light rain jacket
About 107 mm falls this month — showers rather than washouts.
December compared with November and January
December in Buenos Aires is 2.5°C warmer than November and 21 mm wetter than it, which averages 21°C (69°F).
December in Buenos Aires is 1.5°C cooler than January and 28 mm drier than it, which averages 25°C (76°F).
Daylight in Buenos Aires in December
On 15 December the sun is up for 14 hours 28 minutes in Buenos Aires, rising about 05:35 and setting about 20:02 local time.
No month in Buenos Aires has more daylight than December.
Where to stay in Buenos Aires
Dates are a starting point for December.
Travel guides for Buenos Aires
What to read before you book.
Buenos Aires weather by month
TemperatureRainfall
How December compares with the rest of the year
December is highlighted. Every other month links to its own page.
| Month | Average | Rainfall |
|---|---|---|
| January | 25°C / 76°F | 135 mm |
| February | 23°C / 74°F | 94 mm |
| March | 22°C / 72°F | 123 mm |
| April | 18°C / 65°F | 122 mm |
| May | 15°C / 60°F | 85 mm |
| June | 12°C / 54°F | 54 mm |
| July | 11°C / 53°F | 50 mm |
| August | 13°C / 56°F | 52 mm |
| September | 15°C / 58°F | 58 mm |
| October | 18°C / 64°F | 98 mm |
| November | 21°C / 69°F | 87 mm |
| December | 23°C / 74°F | 107 mm |
Check another month
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FAQs about Buenos Aires in December
December climate averages for Buenos Aires, 1991–2020.
Buenos Aires averages 23°C (74°F) in December, ranging from about 19°C (65°F) at night to 28°C (82°F) in the afternoon. That is a 1991–2020 average, so an individual week can run either side of it.
Some. About 107 mm falls across December, enough to need a light jacket but not enough to reshape a trip.
No. December averages 23°C (74°F) against 25°C (76°F) in January — 1.5°C cooler.
December is 2.5°C warmer than November, and 21 mm wetter.
It is outside the easiest window. The most comfortable stretch here is February to April; December sits outside it, which usually means more heat, more rain, or both — worth it if you would rather have the place to yourself.
About 9.2 hours of sun a day on the 1991–2020 average — among the brighter months anywhere.
This page does not show today's weather. It is a 1991–2020 climate normal from Meteostat — a long-run average of what December is usually like, which is what you want when booking months ahead. For today or the coming week, check a live forecast.
About 14 hours 28 minutes of daylight in mid-December, the most of any month in Buenos Aires.
On 15 December, sunrise is about 05:35 and sunset about 20:02 local time. Both shift across the month.
