Argentina Buenos Aires Weather in January (Summer · Best) — Climate Guide
January (Summer · Best) in Buenos Aires is high
Buenos Aires Weather in January (Summer · Best) — Quick Answer
As of 2026- Avg temp
- 30° / 21°
- Rainfall
- 120mm · 9 days
- Crowds
- Very busy
As of 2026, Buenos Aires in January (Summer · Best) averages a high of 30°C and low of 21°C with 120mm of rain over about 9 days. Summer. Short sleeves.
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
Planning a January (Summer · Best) trip to Buenos Aires?
You've checked the weather — next come the budget and the route.
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.