Chillán weather in October

In October, Chillán sees average daytime highs of 19°C and overnight lows near 8°C, with 64 mm of rain across 6.5 wet days and about 12.9 hours of daylight. It is the 7th-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 18°C in the first days to 20°C by the end. The sky is clear or mostly clear about 43% of the time in October, and the air most often feels dry.

Daylight stretches from about 12 h 24 min at the start of October to 13 h 30 min by month's end. Set against the rest of the year, October is Chillán's 7th-clearest and 6th-windiest month. For the whole year in context, see Chillán's year-round climate.

Daytime high
19°
7th warmest
Overnight low
6th coldest
Rainfall
64 mm
6.5 wet days
Daylight
13 hours
7:05 AM – 8:02 PM
Cloud cover
48%
7th clearest
Wind
11 km/h
6th windiest
Solar energy
6.14 kWh/m²
Travel score
6.9
out of 10

Chillán is city in the Ñuble Region, Chile.

Air quality
Elevated
PM2.5 23.3 µg/m³ · 2019
Density
3,908/km²
people per km²
Founded
1580

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 18°C in the first days to 20°C by the end.

A typical October day in Chillán reaches about 19°C in the afternoon and slips back to 8°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 15°C and 23°C. Set against its neighbours, October runs about 2°C warmer than September and about 3°C cooler than November.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1187
2187
3187
4187
5187
6187
7187
8187
9187
10197
11197
12198
13198
14198
15198
16198
17198
18198
19198
20198
21208
22208
23208
24208
25208
26208
27208
28208
29208
30218
31218

Chillán weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 13°101.314.28.6
Feb27° / 12°241.813.48.6
Mar24° / 11°232.312.38.7
Apr20° / 745.311.17.2
May16° / 1939.810.14.8
Jun13° / 26713.39.53.3
Jul13° / 20411.59.83.4
Aug14° / 16811.410.64.2
Sep17° / 967.211.85.7
Oct19° / 646.512.96.9
Nov22° / 293.5148.2
Dec25° / 11°222.414.58.7

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 43% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 17% of October, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15446
25446
35446
45545
55545
65545
75644
85743
95743
105842
115941
125941
135941
146040
156040
166040
176040
186139
196040
206139
216139
226139
236238
246238
256337
266436
276436
286535
296535
306535
316535

Chance of precipitation in October

Any precipitation

Chillán gets around 64 mm of rain over 6.5 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 21% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
121
222
322
422
523
623
723
824
924
1023
1123
1223
1322
1422
1522
1621
1721
1821
1920
2020
2119
2219
2318
2418
2518
2617
2717
2817
2917
3017
3117

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

Most of October feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, October lands in the dry band about 98% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
8991
9991
10991
11991
12991
13991
14991
15991
16991
17991
18982
19982
20982
21982
22982
23973
24973
25973
26973
27973
28973
29973
30973
31973

Wind in October

Winds average 11 km/h in October.

Across October, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2512calm
2612calm
2712calm
2812calm
2912calm
3012calm
3112calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 12 h 24 min at the start of October to 13 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 66 minutes over October. Sunrise moves from 7:26 AM to 6:47 AM, and sunset from 7:48 PM to 8:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.47:267:48
212.47:257:49
312.47:237:50
412.57:227:51
512.57:207:52
612.67:197:53
712.67:177:54
812.67:167:55
912.77:157:56
1012.77:137:56
1112.87:127:57
1212.87:107:58
1312.87:097:59
1412.97:088:00
1512.97:068:01
1613.07:058:02
1713.07:048:03
1813.07:028:04
1913.17:018:05
2013.17:008:06
2113.16:588:07
2213.26:578:08
2313.26:568:09
2413.26:558:10
2513.36:548:11
2613.36:538:12
2713.46:518:13
2813.46:508:14
2913.46:498:15
3013.56:488:16
3113.56:478:17

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 6.14 kWh/m².

For context, solar energy here swings from a low near 1.87 kWh/m² to a high of 8.62 kWh/m² in January across the year — October's 6.14 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.4Bright
35.4Bright
45.5Bright
55.5Bright
65.6Bright
75.6Bright
85.7Bright
95.7Bright
105.8Bright
115.8Bright
125.9Bright
136.0Bright
146.0Intense
156.1Intense
166.1Intense
176.2Intense
186.3Intense
196.3Intense
206.4Intense
216.4Intense
226.5Intense
236.5Intense
246.6Intense
256.7Intense
266.7Intense
276.8Intense
286.8Intense
296.9Intense
306.9Intense
317.0Intense
Planning a trip in October

Hazard calendar for Chillán

In seasonPeak

None of Chillán's seasonal hazards are active in October. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Chillán's rainy season runs May–August, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is October a good time to visit Chillán?

Our two travel scores rate October for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

6.9
Sightseeing
7th-best month of the year
3.0
Beach & pool
7th-best month of the year

October is a reasonable time to visit Chillán for sightseeing.

What to pack for Chillán in October

From October's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In October, Chillán sees daytime highs around 19°C and nights near 8°C. Pack sun protection. Worth having: a warm layer. About 7 days see rain.

sun protectiona warm layer

UV index in Chillán in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chillán peaks around January 14 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 16 at about 2 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 9 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateVery highExtremeJan 14UV 12Jun 16UV 2
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar9Very high
Apr5Moderate
May3Moderate
Jun2Moderate
Jul3Moderate
Aug3Moderate
Sep5High
Oct8Very high
Nov10Extreme
Dec12Extreme

Air quality in Chillán in October

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where October falls, not just the annual average.

Air quality in Chillán is worst in April — around 50 µg/m³ PM2.5 (poor), about 4.6× the cleanest month (December, 11 µg/m³).

Seasonal pattern from CAMS reanalysis, scaled to Chillán's WHO annual average of 23.3 µg/m³.

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateGoodApr 1549 µg/m³Dec 1211 µg/m³
PM2.5 (µg/m³)Level
Jan17Moderate
Feb31Moderate
Mar37Poor
Apr50Poor
May34Moderate
Jun19Moderate
Jul19Moderate
Aug17Moderate
Sep17Moderate
Oct15Moderate
Nov12Moderate
Dec11Good
Location & terrain

Where is Chillán?

Chillán sits at 36.6°S, 72.1°W, 132 m above sea level, in Chile. The nearest listed city is Chillán Viejo, 3.0 km away.

Topography around Chillán

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chillán.

Within 3 km, the terrain around Chillán has only modest variations in elevation — a maximum elevation change of 58 m around an average of 120 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 189 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,164 m.

The land around Chillán is covered by artificial surfaces (65%) within 3 km, grassland (33%), trees (31%) and cropland (27%) within 16 km, and trees (50%) and grassland (27%) within 80 km.

3 km
58 m
16 km
189 m
80 km
3,164 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Chillán Viejo 3.0 km · San Carlos 24 km · Coihueco 24 km · Quillón 37 km · Cabrero 55 km · Coelemu 55 km · Parral 57 km · Cauquenes 74 km

Chile travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / F / L
220 V · 50 Hz
Prices
≈ 48% of US
price level, 2025
GDP per capita
$17,995
2025
Happiness
6.3 / 10
World Happiness, 2025
Safe drinking water
98%
of population, 2024
Homicide rate
6.3
per 100k, 2023
Road deaths
14.9
per 100k/yr, 2019
Income group
High
World Bank
English
Moderate
EF EPI 517
Religion
Catholic 57%none 26%Evangelical or Protestant 16%other Christians and traditions related to Christ 1%

Sources: World Bank, US State Department, World Happiness Report, WHO/UNICEF, EF EPI, CIA World Factbook.

Data sources

Temperature, precipitation, cloud, humidity, wind and solar figures are a 1991–2020 climatology for Chillán (-36.6066°, -72.1034°, elevation 132 m), computed from hourly ERA5 reanalysis — contains modified Copernicus Climate Change Service information. Sun figures are astronomical calculations, not observations. City data © GeoNames, CC BY 4.0. Map outlines from Natural Earth (public domain); interactive map © Google. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).