Climate in Santa Rosa, Argentina

Santa Rosa, Argentina has a humid subtropical climate. The annual average temperature is about 19°C and the city receives roughly 901 mm of precipitation across 99 rainy days a year, with around 1688 hours of sunshine. The warmest month is Jan (highs near 29.7°C) and the coldest is Jul (lows near 8.3°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.

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

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

Santa Rosa sees an estimated 1688 hours of sunshine a year, concentrated in the warmer months around Jan.

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

Santa Rosa has a climate comfort score of 87/100, 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.