Chillán climate

Name: Chillán
Address: CL

Chillán is warmest in January, with average highs of 28 °C, and coldest in July, when nights average 3.9 °C. June is the wettest month (263 mm) and January the driest (9.5 mm). Figures are 1991–2020 climate normals.

Across a full year Chillán averages 1,164 mm of rain, 91 days above 25 °C and 10 days below freezing.

Chile · population 150,396 · 1991–2020 normals

Temperature below 0 °C to above 30 °C Rain band height is that month’s share of the wettest month

Warmest month January 28 °C
Coldest month July 3.9 °C
Driest month January 9 mm
Wettest month June 263 mm
Least cloud January 16 % cloud
Hottest on record January 41 °C
Coldest on record July -5.1 °C

What to expectChillán through the year

Chillán has a clear annual cycle: average daily highs run from 13 °C in July to 28 °C in January, a swing of 13 °C in mean temperature across the year.

Counted across a normal year, 91 days a year reach 25 °C, 15 of them reach 30 °C, 10 nights drop below freezing. The warmest reading in the 1991–2020 record is 41 °C, in January.

Rain is strongly seasonal. June averages 263 mm against 9 mm in January — 28 times as much. Planning around the dry months matters more here than planning around temperature.

Month by month

Month	Avg high	Rainfall	Cloud
January	27.9 °C	9 mm	16 %
February	27.3 °C	24 mm	16 %
March	24.8 °C	23 mm	24 %
April	19.9 °C	75 mm	43 %
May	15.8 °C	192 mm	62 %
June	13.1 °C	263 mm	66 %
July	12.7 °C	201 mm	61 %
August	14.1 °C	166 mm	60 %
September	16.4 °C	96 mm	52 %
October	18.9 °C	63 mm	48 %
November	22.4 °C	30 mm	34 %
December	25.6 °C	22 mm	24 %

Temperature month by month

Month	Avg high	Avg low	Mean	Record high	Record low	Days above 25 °C	Days above 30 °C	Days below 0 °C
January	27.9 °C	13.4 °C	20.5 °C	40.9 °C	6.6 °C	26	6	0
February	27.3 °C	13.2 °C	19.9 °C	35.7 °C	7.7 °C	21	5	0
March	24.8 °C	11.6 °C	17.7 °C	34.4 °C	4.4 °C	15	1	0
April	19.9 °C	8.8 °C	13.7 °C	29.1 °C	0.0 °C	2	0	0
May	15.8 °C	6.8 °C	10.7 °C	23.7 °C	-3.6 °C	0	0	1
June	13.1 °C	5.3 °C	8.7 °C	20.9 °C	-4.6 °C	0	0	2
July	12.7 °C	3.9 °C	7.7 °C	21.4 °C	-5.1 °C	0	0	4
August	14.1 °C	4.5 °C	8.8 °C	23.2 °C	-5.0 °C	0	0	3
September	16.4 °C	5.6 °C	10.6 °C	25.6 °C	-2.4 °C	0	0	0
October	18.9 °C	7.2 °C	12.8 °C	31.6 °C	0.2 °C	1	0	0
November	22.4 °C	9.4 °C	15.7 °C	33.3 °C	2.1 °C	6	0	0
December	25.6 °C	11.8 °C	18.6 °C	33.7 °C	5.0 °C	19	3	0

Rain, sun and wind month by month

Month	Rainfall	Wet days	Daylight	Cloud cover	Humidity	Wind
January	9 mm	1	14 h/day	16 %	57 %	19 km/h
February	24 mm	2	13 h/day	16 %	60 %	18 km/h
March	23 mm	3	12 h/day	24 %	66 %	17 km/h
April	75 mm	5	11 h/day	43 %	75 %	16 km/h
May	192 mm	10	10 h/day	62 %	83 %	16 km/h
June	263 mm	14	9.7 h/day	66 %	84 %	18 km/h
July	201 mm	12	9.9 h/day	61 %	83 %	17 km/h
August	166 mm	12	11 h/day	60 %	81 %	18 km/h
September	96 mm	7	12 h/day	52 %	77 %	18 km/h
October	63 mm	7	13 h/day	48 %	74 %	18 km/h
November	30 mm	4	14 h/day	34 %	67 %	19 km/h
December	22 mm	3	15 h/day	24 %	60 %	19 km/h

How Chillán compares

The same four figures for nearby destinations, so the numbers above have something to be read against. Summer high is the warmest month's average high; winter low is the coldest month's average low.

Destination	Summer high	Winter low	Rain per year	Days above 25 °C
Chillán	28 °C	3.9 °C	1,164 mm	91
Concepción · Chile	24 °C	6.0 °C	846 mm	34
Talcahuano · Chile	22 °C	6.8 °C	836 mm	7
Talca · Chile	30 °C	4.3 °C	773 mm	127
Temuco · Chile	24 °C	4.0 °C	1,409 mm	33

Where Chillán ranks

Ranking	Position	Value
The coolest places in South America in June	7th of 50	13 °C
The coolest places in South America in July	8th of 50	13 °C
The coolest places in South America in August	9th of 50	14 °C
Places with the best weather in South America in March	10th of 50	93/100
The coolest places in South America in May	12th of 50	16 °C
The coolest places in South America in September	12th of 50	16 °C

Planning a trip? See the best time to visit Chillán.

QuestionsCommon questions about Chillán’s climate

When is the best time to visit Chillán?

That depends on what you want, so the honest answer is a comparison rather than a single month. January, February, December sit closest to 20 °C on average, January is the warmest month and January the driest. The month-by-month table above has the full picture.

How hot does Chillán get?

In January, the warmest month, daily highs average 28 °C. About 15 days a year pass 30 °C. The highest value in the 1991–2020 record is 41 °C.

How cold does it get in winter?

Nights average 3.9 °C in July, the coldest month. A normal year has 10 nights below freezing.

Which month is wettest in Chillán?

June, averaging 263 mm over 14 days with rain. The driest month is January with 9 mm. The year as a whole averages 1,164 mm.

Are these figures a forecast?

No. They are 1991–2020 climate normals: the average of thirty years, which describes what a month is usually like in Chillán rather than what any particular week will bring. Individual years can differ substantially from the normal.

Data sources and method

ERA5 / ERA5-Land reanalysis — Copernicus Climate Change Service (C3S), ECMWF. Copernicus Licence
Open-Meteo — Open-Meteo.com. CC BY 4.0
NOAA OISST v2.1 — NOAA Physical Sciences Laboratory. Public domain
GeoNames — GeoNames.org. CC BY 4.0

Normal period: 1991–2020
Data point: -36.607°, -72.103° (the coordinates the reanalysis values are taken for)
Dataset version: era5-1991-2020-scores1.1
Last processed: 1 August 2026

Measured values come from ERA5 reanalysis and are reproduced unchanged. Calculated by us: monthly rankings, daylight hours, beach and comfort scores. Full formulas are on the methodology page.

Contains modified Copernicus Climate Change Service information 2026. Neither the European Commission nor ECMWF is responsible for any use that may be made of the Copernicus information or data it contains.