The month in detail
What to expect in December
Summer in Buenos Aires brings pleasant temperatures (81°F) and long sunny days (8.6h of sunshine). Rain risk remains low (19% of days), leaving good room for outdoor activities. A good balance between weather and crowds, even if January (8.9/10) remains theoretically better.
December ranks 2 out of 12 months in Buenos Aires. Compared to November: +5°F daytime.
This month's conditions
What it's like in December
UV index
9 · very high
protection essential
Feels like
comfortable
15°
Sea
25°C
pleasant for swimming
Daylight
14.3h of daylight
Air quality
good
AQI 25
Compare
Is December the right month?
The best month in Buenos Aires is January (8.9/10), 0.1 pt higher than December.
Book
Plan your trip
Hotels at their lowest outside peak season, highest on comfortable months. Shoulder seasons offer a good price/climate compromise.
Stay
Hotels & rentals · Buenos Aires
Expedia →
Activities
Tours, tickets, experiences
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Flights
Multi-airline comparator
Kiwi →
🎟️ Activities & tours · Buenos Aires
GetYourGuide selection · free cancellation
Practical info
What you need to know before you go
Three angles: the country (language, currency, safety, budget), the year-round climate, and the specifics of a beach trip.
Country · Argentina
🗣️LanguageSpanish
💶CurrencyArgentine Peso ($)
🚗DrivingRight-hand
🛡️Safety ⓘVery safe · 1/5
💰Cost of living ⓘCheap · 2/5
🌡️ Climate
🌍Climate typeTemperate oceanic
📈Climate trend ⓘStable
🔥Hottest monthJanuary · 82°F
❄️Coolest monthJune · 57°F
🌧️Rainiest month ⓘMarch · 23%
🏖️ Beach trip
📅Peak seasonJuin → Sept
🏖️Swell (Sept–Mar) ⓘModérée
Explore
Other destinations in December
If December doesn't convince you for this destination, compare with others.
Location
Where is Buenos Aires ?
Global position + regional geographic context.
🌍 World
🔍 Geographic context
ArgentinaTemperate oceanic climate with a 8.9 → 4.4 gap between best and worst month. 10 years of ERA5 data to choose by project.
34.61°S · 58.38°W
Questions
Frequently asked questions
What is the best time to visit Buenos Aires?
January is the best month with 82°F highs, 70°F lows, 8.8h of sunshine and 19.0% rainy days. The months of January & February offer comparable conditions.
How many hours of sunshine does Buenos Aires get in January?
Buenos Aires averages 8.8 sunshine hours per day in January. It is the sunniest month with a climate score of 8.5/10.
What is the rainiest month in Buenos Aires?
June is the most unfavourable month with June has the lowest climate score of the year and the lowest climate score of the year.
What are the temperatures at night in Buenos Aires in January?
In January, overnight lows reach 70°F, while afternoon highs average 82°F.
Is Buenos Aires good in winter?
In winter (December-February), Buenos Aires scores 8.4/10 on average — Acceptable conditions for cultural visits.. The best month overall remains January with a score of 8.5/10.
When should you avoid Buenos Aires?
June is the most difficult month to visit Buenos Aires, with June has the lowest climate score of the year. Climate conditions are at their lowest of the year during this period.
Can you swim in Buenos Aires in December?
In December, the sea averages 78°F in Buenos Aires: pleasant for swimming. Swimming is pleasant without a wetsuit.
Do you need sun protection in Buenos Aires in December?
The average UV index reaches 9 in December in Buenos Aires (very high), with about 14.3h of daylight. Protection essential.