The highest day temperature in January 2026 was 90°F. The lowest night temperature was 61°F. The average values for day and night temperatures during January were 82.2°F и 72.5°F respectivly.

The average sea surface temperature in January 2026 for Buenos Aires was 82.6°F. The maximum and minimum values were 79.6°F and 88.0°F respectively.

Most of the days in January are sunny but you can also expect cloudy and gloomy days.

Precipitation total in January for Buenos Aires is 2.6 in.

The average wind speed in January is 10.5 mph. This value is relatively stable throughout the year.

We are using day length and cloud cover information for each day of the month to calculate averages for this chart. Average sunny hours for Buenos Aires in January is 11.6 hours.