Climate in Buenos Aires

Buenos Aires, Argentina has a humid subtropical climate. The annual average temperature is about 20°C and the city receives roughly 901 mm of precipitation across 99 rainy days a year, with around 1693 hours of sunshine. The warmest month is Jan (highs near 30.4°C) and the coldest is Jul (lows near 9.5°C). These are deterministic, latitude- and region-based planning estimates — not a forecast or measured station data; check current conditions with an official meteorological service before travel.

Data year 2025; last updated 2026-05-16.

Buenos Aires is classified as Humid Subtropical. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Buenos Aires receives about 901 mm of precipitation a year over roughly 99 rainy days. The wettest month is Jan and the driest is Jul.

Buenos Aires sees an estimated 1693 hours of sunshine a year, concentrated in the warmer months around Jan.

By temperature and rainfall, the most comfortable months in Buenos Aires are May, Apr, Oct. Conditions vary year to year — verify with a current forecast before booking.

Buenos Aires has a climate comfort score of 85/100, a very comfortable year-round climate by this measure. The score weights mild temperatures most, then rainfall balance, sunshine, low seasonality, and the absence of extreme winter cold or summer heat.

• Climate in São Paulo — Temperate, comfort 83/100
• Climate in Santiago — Semi-Arid, comfort 90/100
• Climate in Mexico City — Semi-Arid, comfort 72/100