Argentina Buenos Aires Weather in January (Summer · Best) — Climate Guide
January (Summer · Best) in Buenos Aires is high
January (Summer · Best) is high for Buenos Aires.
January is high summer and a peak season.
Travel score
Buenos Aires January (Summer · Best) Weather Stats
Avg High
30°C
Avg Low
21°C
Rainy Days
9
120mm 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
January (Summer · Best) Sunrise & Sunset
Air Quality
PM2.5
20 μg/m³
PM10
40 μg/m³
Status
moderate
Feels-Like Temperature & Wind
Feels like
Daytime
33°C
Nighttime
22°C
Humidity and wind affect how the actual temperature feels.
Wind
13 km/h
Max gust 26 km/h
Activities Recommended for January (Summer · Best)
January (Summer · Best) Travel Pros & Cons
Pros
- A great 30/21°C climate
- Peak visitor season
- Summer holidays
Cons
- Hotels run 1.5-2x — the Faena books out
- 70% humidity
January (Summer · Best) Events & Festivals
- Summer-holiday peak — tango travelers in force
Buenos Aires in January (Summer · Best) — Full Picture
January is high summer and a peak season.
What to Wear & What to Pack
Summer. Short sleeves.
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 January (Summer · Best) Hotel Picks
Frequently Asked Questions
Is January (Summer · Best) a good time to visit Buenos Aires?
Buenos Aires in January (Summer · Best) is high. Tourist crowds are very busy and flight/hotel prices are peak.
What's the average temperature in Buenos Aires in January (Summer · Best)?
Buenos Aires January (Summer · Best) averages a high of 30°C and a low of 21°C.
Does it rain much in Buenos Aires in January (Summer · Best)?
Buenos Aires January (Summer · Best) averages 120mm of rainfall over about 9 rainy days.
What should I wear in Buenos Aires in January (Summer · Best)?
Summer. Short sleeves.
What time are sunrise and sunset in Buenos Aires in January (Summer · Best)?
Buenos Aires January (Summer · Best) sunrise is 06:00 and sunset is 20:00, with 14h of daylight.
What's the air quality like in Buenos Aires in January (Summer · Best)?
Buenos Aires January (Summer · Best) air quality (AQI) averages 50, rated Good. PM2.5 averages 20μg/m³.
What activities are recommended in Buenos Aires in January (Summer · Best)?
In January (Summer · Best), Buenos Aires is great for Tango, Recoleta, Palermo.
Is January (Summer · Best) peak season in Buenos Aires?
Buenos Aires January (Summer · Best) 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.