Buenos Aires in January
In January, Buenos Aires averages 30°C (86°F) during the day and 20°C (68°F) at night, with around 8 days of rain (130 mm total).
High seasonConditions are warm and beach-friendly. Occasional showers are likely but won't dominate.
January is a great month to visit Buenos Aires: pleasant temperatures and relatively few wet days.
How January compares to the rest of the year in Buenos Aires
January is one of the warmest months in Buenos Aires (1st of 12) and one of the wettest months (1st of 12). Daytime temperature runs 8°C above the annual average (23°C). January runs 1°C warmer than December (29°C) and cools 1°C in February (29°C).
January sunrise & sunset in Buenos Aires
Times shown for Buenos Aires local time (America/Argentina/Buenos_Aires), calculated for the 15th of January. They shift by a few minutes day to day across the month.
Photography light in Buenos Aires — January
Golden-hour and blue-hour windows for the 15th of January, in Buenos Aires's local time. Use these for soft warm light (golden) or cool architectural twilight (blue).
📅 When to book — Buenos Aires in January
Travel writers usually only tell you when to go. Here's when to book flights and lodging for the best mix of price and availability, based on January's tier (High season) and Buenos Aires's popularity.
Crowds & pricing — January in Buenos Aires
This is a busy month in Buenos Aires — not the absolute peak, but tourist numbers are clearly elevated. You'll feel it at headline attractions on weekends and in the historic centre, though side streets and lesser-known sights stay manageable. Prices are above off-season but not at their summit. A good week for first-time visitors who want everything open without the worst of the crush.
Why this tier: Southern Hemisphere summer holidays
Sun & mosquito risk — January in Buenos Aires
UV is a clear-sky sea-level estimate — clouds, altitude, and reflective surfaces (snow, water) shift it ±30%. Mosquito risk is climate-derived only; for current disease advisories (dengue, malaria, zika) check the CDC or WHO travel pages before your trip.
Buenos Aires in other months
| Month | Avg high | Avg low | Rainfall | Rain days | Snow days |
|---|---|---|---|---|---|
| January | 30°C / 86°F | 20°C / 68°F | 130 mm | 8 | — |
| February | 29°C / 84°F | 20°C / 68°F | 125 mm | 7 | — |
| March | 27°C / 81°F | 18°C / 64°F | 150 mm | 7 | — |
| April | 22°C / 72°F | 15°C / 59°F | 110 mm | 7 | — |
| May | 19°C / 66°F | 11°C / 52°F | 85 mm | 6 | — |
| June | 15°C / 59°F | 8°C / 46°F | 65 mm | 6 | — |
| July | 15°C / 59°F | 7°C / 45°F | 65 mm | 7 | — |
| August | 17°C / 63°F | 9°C / 48°F | 75 mm | 6 | — |
| September | 19°C / 66°F | 11°C / 52°F | 85 mm | 7 | — |
| October | 22°C / 72°F | 14°C / 57°F | 125 mm | 8 | — |
| November | 26°C / 79°F | 17°C / 63°F | 125 mm | 8 | — |
| December | 29°C / 84°F | 19°C / 66°F | 130 mm | 8 | — |
Other cities with similar January weather
🌍 See the full ranked list of climate twins for Buenos Aires in January →
Frequently asked questions
How hot is Buenos Aires in January?
In January, Buenos Aires averages a high of 30°C (86°F) and a low of 20°C (68°F) — generally hot.
Does it rain a lot in Buenos Aires in January?
January sees occasional rain in Buenos Aires, with about 8 rainy days on average.
Is January a good time to visit Buenos Aires?
January is hot. It suits travelers who are comfortable with hot weather; check the month-by-month ranking to compare it against the rest of the year.
What should I pack for Buenos Aires in January?
Pack lightweight, breathable clothing, sunglasses and sunscreen. See the full January packing list for Buenos Aires for a complete, climate-based checklist.
Check the live 10-day forecast and sunrise/sunset.