Weather in Buenos Aires in January
January in Buenos Aires is warm outdoor weather. Days are long enough to be useful. Shade starts to matter at midday.
In Argentina, this is how Buenos Aires actually wears January, not how a country centroid would. January is high summer in the southern year. Do not pack Buenos Aires as if it were a northern winter. January is the peak of the warm side of the year in Buenos Aires. If you wanted the gentlest heat, this is not that month.
- Average temp
- 25°C
21–29°C
- Rainfall
- 135 mm
Showers likely
- Sunshine
- 9.4 h
hours per day
What to expect
Daytime
Warm days in Buenos Aires in January. A hat starts to earn its keep at midday. Evenings are the comfortable part of the clock.
You can walk at more hours than in the fierce months. Still build in a pause when the sun is high. Nights are easy.
Rain
Mixed skies in Buenos Aires in January. Dry days and wet days share the month. Outdoor plans need a backup, not a cancellation policy.
Pack a shell you will actually carry. The monthly table is the place for totals. This is the feel: usable, interrupted.
Evening
Evenings stay warm.
What to pack
Sun protection
Rain jacket
Where to stay in Buenos Aires
Dates are a starting point for January.
Travel guides for Buenos Aires
What to read before you book.
Average weather in Buenos Aires
TemperatureRainfall
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FAQs about Buenos Aires
Climate averages for Buenos Aires, 1991–2020.
The best time to visit Buenos Aires is between February and April, the most comfortable stretch of the year on these averages.
January is the hottest month, with an average around 25°C.
January is the wettest month, with about 135 mm of rain.
No. These are 1991–2020 climate normals from Meteostat, not a live forecast. Actual weather in any given week can differ.
