Climate in Chillán, Chile

Chillán, Chile has a semi-arid climate. The annual average temperature is about 18.5°C and the city receives roughly 400 mm of precipitation across 43 rainy days a year, with around 3016 hours of sunshine. The warmest month is Jan (highs near 29.1°C) and the coldest is Jul (lows near 7.9°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.

Chillán is classified as Semi-Arid. This reflects its annual temperature range and the seasonal pattern of its rainfall.

Chillán receives about 400 mm of precipitation a year over roughly 43 rainy days. The wettest month is Jun and the driest is Jan.

Chillán sees an estimated 3016 hours of sunshine a year, concentrated in the warmer months around Jan.

By temperature and rainfall, the most comfortable months in Chillán are Oct, Nov, Jan. Conditions vary year to year — verify with a current forecast before booking.

Chillán has a climate comfort score of 93/100, 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.