Chillán Viejo weather in January

In January, Chillán Viejo sees average daytime highs of 27°C and overnight lows near 13°C, with 8 mm of rain across 1.1 wet days and about 14.2 hours of daylight. It is the 1st-warmest and 12th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 81% of the time in January, and the air most often feels dry.

Daylight stretches from about 14 h 30 min at the start of January to 13 h 54 min by month's end. Set against the rest of the year, January is Chillán Viejo's 1st-clearest and 1st-windiest month. For the whole year in context, see Chillán Viejo's year-round climate.

Daytime high
27°
1st warmest
Overnight low
13°
12th coldest
Rainfall
8 mm
1.1 wet days
Daylight
14 h 12 min
6:50 AM – 9:05 PM
Cloud cover
17%
1st clearest
Wind
14 km/h
1st windiest
Solar energy
8.63 kWh/m²
Travel score
8.6
out of 10

Chillán Viejo is city in Chile.

Density
3,158/km²
people per km²
Founded
1895

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

Temperature in January

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 27°C through the month.

A typical January day in Chillán Viejo reaches about 27°C in the afternoon and slips back to 13°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°C. Set against its neighbours, January runs about 2°C warmer than December and on par with February.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12712
22712
32712
42712
52712
62712
72712
82712
92712
102713
112713
122713
132713
142713
152713
162713
172713
182713
192713
202713
212813
222813
232813
242813
252813
262813
272713
282713
292713
302713
312713

Chillán Viejo weather by month

How January compares with the rest of the year at a glance. January is the 1st-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 13°81.114.28.6
Feb27° / 12°181.613.48.6
Mar24° / 11°212.712.38.7
Apr20° / 605.211.17.1
May15° / 1579.610.14.8
Jun13° / 21413.39.53.2
Jul13° / 15911.79.83.3
Aug14° / 13211.310.64.1
Sep16° / 726.911.85.6
Oct19° / 496.512.96.8
Nov22° / 253.1148.2
Dec25° / 11°162.414.58.7

Cloud cover in January

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 81% of the time in January, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 9% of January, with mostly cloudy or overcast conditions the remaining 10%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28911
38911
48911
59010
69010
79010
89010
99010
109010
118911
128911
138911
149010
159010
169010
179010
189010
199010
209010
219010
229010
239010
249010
259010
269010
279010
289010
299010
309010
319010

Chance of precipitation in January

Any precipitation

Chillán Viejo gets around 8 mm of rain over 1.1 wet days in January, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 4% and peaks near 6% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
16
25
35
45
55
65
75
85
95
105
115
124
134
144
154
164
174
183
193
203
213
223
233
243
253
263
273
284
294
304
314

Humidity in January

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, January lands in the dry band about 78% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
184160
283170
383170
483170
582180
682180
782180
882180
981190
1080191
1179201
1279201
1378211
1478211
1577221
1677221
1776222
1876222
1975232
2075232
2175232
2275232
2375232
2475232
2576222
2676222
2776222
2876222
2977221
3077221
3178211

Wind in January

Winds average 14 km/h in January, the windiest month of the year.

Across January, daily wind ranges from about 13 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
114light breeze
214light breeze
314light breeze
414light breeze
514light breeze
614light breeze
714light breeze
814light breeze
914light breeze
1014light breeze
1114light breeze
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2114light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in January

DaylightNight

Daylight runs from about 14 h 30 min at the start of January to 13 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over January. Sunrise moves from 6:38 AM to 7:06 AM, and sunset from 9:06 PM to 8:58 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.56:389:06
214.56:389:06
314.46:399:06
414.46:409:06
514.46:419:06
614.46:429:06
714.46:429:06
814.46:439:06
914.46:449:06
1014.46:459:06
1114.36:469:06
1214.36:479:06
1314.36:489:06
1414.36:499:06
1514.36:499:05
1614.26:509:05
1714.26:519:05
1814.26:529:05
1914.26:539:04
2014.26:549:04
2114.16:559:04
2214.16:569:03
2314.16:579:03
2414.16:589:02
2514.06:599:02
2614.07:009:01
2714.07:019:01
2814.07:029:00
2913.97:048:59
3013.97:058:59
3113.97:068:58

Solar energy in January

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in January, about 8.63 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 1.85 kWh/m² to a high of 8.63 kWh/m² in January across the year — January's 8.63 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
18.8Intense
28.8Intense
38.8Intense
48.8Intense
58.8Intense
68.8Intense
78.8Intense
88.8Intense
98.8Intense
108.8Intense
118.7Intense
128.7Intense
138.7Intense
148.7Intense
158.7Intense
168.6Intense
178.6Intense
188.6Intense
198.6Intense
208.5Intense
218.5Intense
228.5Intense
238.4Intense
248.4Intense
258.4Intense
268.3Intense
278.3Intense
288.3Intense
298.2Intense
308.2Intense
318.2Intense
Planning a trip in January

Hazard calendar for Chillán Viejo

In seasonPeak

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

Chillán Viejo'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 January a good time to visit Chillán Viejo?

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

8.6
Sightseeing
3rd-best month of the year
8.7
Beach & pool
1st-best month of the year

January is one of the better times to visit Chillán Viejo for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chillán Viejo in January

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

In January, Chillán Viejo sees daytime highs around 27°C and nights near 13°C. Pack light clothes and sun protection.

light clothessun protection

UV index in Chillán Viejo in January

LowModerateHighVery highExtreme

Clear-sky midday UV in January peaks around 13 (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 Viejo 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 Viejo in January

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Chillán Viejo is worst in April — around 40 µg/m³ PM2.5 (poor), about 4.6× the cleanest month (December, 9 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateGoodApr 1539 µg/m³Dec 129 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb25Moderate
Mar30Moderate
Apr40Poor
May27Moderate
Jun15Moderate
Jul15Moderate
Aug14Moderate
Sep13Moderate
Oct12Moderate
Nov10Good
Dec9Good
Location & terrain

Where is Chillán Viejo?

Chillán Viejo sits at 36.6°S, 72.1°W, 117 m above sea level, in Chile. The nearest listed city is Chillán, 3.0 km away.

Topography around Chillán Viejo

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

Within 3 km, the terrain around Chillán Viejo has only modest variations in elevation — a maximum elevation change of 50 m around an average of 105 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 Viejo is covered by artificial surfaces (39%), grassland (25%) and cropland (20%) within 3 km, trees (33%), grassland (33%) and cropland (26%) within 16 km, and trees (50%) and grassland (26%) within 80 km.

3 km
50 m
16 km
189 m
80 km
3,164 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
January weather nearby: Chillán 3.0 km · Coihueco 27 km · San Carlos 27 km · Quillón 33 km · Cabrero 52 km · Coelemu 53 km · Parral 60 km · Tomé 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 Viejo (-36.623°, -72.1319°, elevation 117 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).