Argentina Buenos Aires Weather in December (Early Summer · New Year) — Climate Guide
December (Early Summer · New Year) in Buenos Aires is very-high
December (Early Summer · New Year) is very-high for Buenos Aires.
December is early summer — New Year's Eve is the peak.
Travel score
Buenos Aires December (Early Summer · New Year) Weather Stats
Avg High
28°C
Avg Low
19°C
Rainy Days
8
100mm total
Sunshine
9h
Daily avg
Humidity
70%
comfortable
UV Index
11
Extreme
Wind
13 km/h
Gusts 26
Sea Temp
0°C
no swimming
Crowds
Very busy
At attractions
December (Early Summer · New Year) Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
40 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
30°C
Nighttime
20°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 26 km/h
Activities Recommended for December (Early Summer · New Year)
December (Early Summer · New Year) Travel Pros & Cons
Pros
- A great 28/19°C climate
- Great for New Year's Eve
- Summer holidays
Cons
- Hotels run 1.5-2x — the Faena books out
December (Early Summer · New Year) Events & Festivals
- Christmas and New Year's Eve — peak season
- Summer holidays
Buenos Aires in December (Early Summer · New Year) — Full Picture
December is early summer — New Year's Eve is the peak.
What to Wear & What to Pack
Summer begins.
Packing Checklist
Seasonal Weather Overview
Spring (Mar·Apr·May)
22°C
14.3°C
8/mo
Summer (Jun·Jul·Aug)
14.7°C
7.7°C
7/mo
Autumn (Sep·Oct·Nov)
21.7°C
12°C
8.7/mo
Winter (Dec·Jan·Feb)
Current29°C
20°C
8.3/mo
Buenos Aires Monthly Weather Comparison
| Month | High | Low | Rain | Sun | Humid | UV | Crowd | Price |
|---|---|---|---|---|---|---|---|---|
| January (Summer · Best) (Best) | 30° | 21° | 9d·120mm | 9h | 70% | 11 | Very busy | Peak |
| February (Summer) (Best) | 29° | 20° | 8d·110mm | 9h | 70% | 11 | Very busy | Peak |
| 26° | 18° | 9d·130mm | 8h | 75% | 9 | Busy | Peak | |
| April (Autumn · Best) (Best) | 22° | 14° | 8d·100mm | 7h | 75% | 6 | Busy | Peak |
| May (Late Autumn) (Best) | 18° | 11° | 7d·90mm | 6h | 80% | 4 | Moderate | Shoulder |
| 14° | 8° | 7d·60mm | 5h | 80% | 3 | Quiet | Low season | |
| 14° | 7° | 7d·60mm | 5h | 80% | 3 | Quiet | Low season | |
| 16° | 8° | 7d·70mm | 6h | 75% | 5 | Busy | Peak | |
| 18° | 9° | 8d·80mm | 7h | 70% | 7 | Busy | Peak | |
| October (Spring · Top Pick) (Best) | 22° | 12° | 9d·100mm | 8h | 70% | 9 | Very busy | Peak |
| 25° | 15° | 9d·110mm | 9h | 70% | 11 | Very busy | Peak | |
| 28° | 19° | 8d·100mm | 9h | 70% | 11 | Very busy | Peak |
View Other Months
Buenos Aires December (Early Summer · New Year) Hotel Picks
Frequently Asked Questions
Is December (Early Summer · New Year) a good time to visit Buenos Aires?
Buenos Aires in December (Early Summer · New Year) is very-high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Buenos Aires in December (Early Summer · New Year)?
Buenos Aires December (Early Summer · New Year) averages a high of 28°C and a low of 19°C.
Does it rain much in Buenos Aires in December (Early Summer · New Year)?
Buenos Aires December (Early Summer · New Year) averages 100mm of rainfall over about 8 rainy days.
What should I wear in Buenos Aires in December (Early Summer · New Year)?
Summer begins.
What time are sunrise and sunset in Buenos Aires in December (Early Summer · New Year)?
Buenos Aires December (Early Summer · New Year) sunrise is 05:45 and sunset is 19:55, with 14h 10min of daylight.
What's the air quality like in Buenos Aires in December (Early Summer · New Year)?
Buenos Aires December (Early Summer · New Year) air quality (AQI) averages 50, rated Good. PM2.5 averages 20μg/m³.
What activities are recommended in Buenos Aires in December (Early Summer · New Year)?
In December (Early Summer · New Year), Buenos Aires is great for New Year's Eve, Tango, Recoleta.
Is December (Early Summer · New Year) peak season in Buenos Aires?
Buenos Aires December (Early Summer · New Year) crowds are very busy and prices are peak. Advance reservations are strongly recommended.
Best Months to Visit Buenos Aires
View Other Months
Why you can trust weather guide
Based in Chiang Mai for 8+ years, with 30+ countries visited across Southeast Asia, Japan, and Europe. Every detail in this guide is primary-source verified as of April 2026, with prices auto-refreshed via live exchange rate APIs. This isn't AI-generated boilerplate — it's written from the perspective of someone who has actually been there.