Weather in Buenos Aires in January 2025
- January is usually the hottest month of the year in Buenos Aires;
- January is usually the driest month of the year in Buenos Aires
Average weather
Average temperature in Buenos Aires in January
The temperature in January is +31°C on average, with a range between a maximum of +36°C during the day and a minimum of +17°C at night.
The average maximum temperature goes up 21% by the end of the month, compared with the beginning of the month, from +26°C to +30°C.
Is Buenos Aires warm or cold in January?
Buenos Aires is typically warm in January.
Maximum temperatures go up compared to the previous month from +27°C to +28°C. The minimum temperature also goes up from +19°C to +20°C.
It’s generally warm, but pack a long-sleeve shirt for evenings.
January is the hottest month in Buenos Aires, here is the comparison with other months:
Water temperature in Buenos Aires in January
Water in Buenos Aires in January is Comfortable. It varies from +23°C to +25°C, with an average of +24°C. This is almost similar to the air temperature, which averages +28°C.
The water temperature in January is one of the warmest of the entire year:
Can you swim in Buenos Aires in January?
Travel to Buenos Aires
Climate in Buenos Aires in January
| December | January | February | ||||
|---|---|---|---|---|---|---|
| Avg. temperature | ||||||
| +27°C | +28°C | +27°C | ||||
| Min. temperature | ||||||
| +9°C | +11°C | +8°C | ||||
| Max. temperature | ||||||
| +39°C | +41°C | +38°C | ||||
| Rainfall | ||||||
| 86 mm | 87 mm | 98 mm | ||||
| Wind | ||||||
| 3 m/s | 3 m/s | 3 m/s | ||||
| Avg. water temperature | ||||||
| +22°C | +24°C | +23°C | ||||
| Humidity | ||||||
| 66% | 66% | 70% | ||||
| Air pressure | ||||||
| 1010 HPa | 1010 HPa | 1012 HPa | ||||
| Sunny days | ||||||
| 12 | 12 | 11 | ||||
| Cloudy days | ||||||
| 5 | 6 | 5 | ||||
| Rainy days | ||||||
| 8 | 8 | 8 | ||||
| Snowy days | ||||||
| 0 | 0 | 0 | ||||
January weather is still as good as in December. It’s getting warmer as January arrives. The average maximum temperature goes up from +27°C to +28°C during the day. Prepare for more rain. Average rainfall goes from 86 mm to 87 mm. Humidity levels don’t change as the month goes on, averaging around 66%. The average wind speed doesn’t change much during January, staying around 3 m/s. The amount of sunny days stay about the same, averaging 12 sunny days during the month.
February brings much the same weather, it remains good.
Wind
The average wind speed is 4 m/s getting up to 7 m/s which is a medium breeze. You can feel it, especially getting out of the water.
The average wind speed in Buenos Aires is gradually increasing during January, going from 5 m/s to 5 m/s over the course of the month.
Rain
How was the weather last January in Buenos Aires?
Climate Change over Years
The climate in Buenos Aires in January has not changed much over the last 43 years.
The average temperature was the lowest in 1983 (+20°C) and the highest in 2017 (+22°C). The driest year was 2008 with only 468 mm of rainfall, and the wettest year was 2014 with 1388 mm.
FAQ
Is January a good time to visit Buenos Aires?
Can you sunbathe in Buenos Aires in January?
Can you swim in Buenos Aires in January?
Is Buenos Aires rainy in January?
Is it sunny in Buenos Aires in January?
How much does it cost to fly to Buenos Aires in January?
Monthly weather in Buenos Aires
Source of the data
For this page, we’ve looked at the typical weather in Buenos Aires, based on historical hourly weather data from January 1, 1979, to December 31, 2023.
For past dates, we show actual recorded data at the location at that time. Forecasts are based on recorded weather during that day of the year, averaged over the total years for which we have records (unless stated otherwise). The daily temperature is the highest recorded temperature in the shadow during that day.