Chilecito weather in December

In December, Chilecito sees average daytime highs of 24°C and overnight lows near 15°C, with 299 mm of rain across 22.5 wet days and about 13.8 hours of daylight. It is the 2nd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 23°C in the first days to 25°C by the end. The sky is clear or mostly clear about 33% of the time in December, and the air most often feels dry.

Daylight stretches from about 13 h 42 min at the start of December to 13 h 48 min by month's end. Set against the rest of the year, December is Chilecito's 9th-clearest and 3rd-windiest month. For the whole year in context, see Chilecito's year-round climate.

Daytime high
24°
2nd warmest
Overnight low
15°
11th coldest
Rainfall
299 mm
22.5 wet days
Daylight
13 h 54 min
6:30 AM – 8:22 PM
Cloud cover
54%
9th clearest
Wind
7 km/h
3rd windiest
Solar energy
6.34 kWh/m²
Travel score
5.1
out of 10

Chilecito is town in La Rioja Province, Argentina.

Founded
1715

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs climb over the month, from about 23°C in the first days to 25°C by the end.

A typical December day in Chilecito reaches about 24°C in the afternoon and slips back to 15°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 28°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12314
22314
32315
42315
52315
62315
72315
82315
92415
102415
112415
122415
132415
142415
152415
162415
172416
182416
192516
202516
212516
222516
232516
242516
252516
262516
272516
282516
292516
302516
312516

Chilecito weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysSnow daysDaylight (hours)Travel score
Jan24° / 16°34824.4013.74.8
Feb23° / 15°31420.40135.0
Mar22° / 14°36723.2012.24.8
Apr20° / 11°32219.90.211.35.0
May17° / 28818110.64.7
Jun16° / 17112.51.610.24.9
Jul15° / 13310.63.110.34.8
Aug17° / 14010.72.9115.7
Sep18° / 22414.11.911.85.8
Oct21° / 11°31019.60.312.75.3
Nov22° / 14°33421.6013.55.0
Dec24° / 15°29922.5013.85.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 33% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 24% of December, with mostly cloudy or overcast conditions the remaining 43%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15545
25644
35644
45644
55644
65644
75644
85545
95545
105644
115644
125644
135743
145743
155842
165941
175941
185941
195941
205941
215941
225941
235941
245941
255941
265842
275842
285743
295644
305644
315446

Chance of precipitation in December

Any precipitation

Chilecito gets around 299 mm of rain over 22.5 wet days in December. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 73% and peaks near 78% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
178
278
378
478
578
677
777
877
976
1075
1175
1274
1373
1472
1571
1671
1770
1869
1969
2069
2169
2269
2369
2469
2570
2670
2771
2871
2972
3073
3174

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the dry band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
165314
265314
364324
462335
562335
661345
760346
859356
957367
1056368
1155378
1254379
13523810
14523810
15493911
16484012
17474013
18454113
19444114
20424215
21414316
22394317
23384418
24364519
25354520
26334621
27324622
28314623
29304524
30294525
31284527

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 42 min at the start of December to 13 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 6 minutes over December. Sunrise moves from 6:28 AM to 6:38 AM, and sunset from 8:12 PM to 8:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.76:288:12
213.76:288:12
313.86:288:13
413.86:288:14
513.86:288:15
613.86:288:15
713.86:288:16
813.86:288:17
913.86:298:17
1013.86:298:18
1113.86:298:19
1213.86:298:19
1313.86:308:20
1413.86:308:21
1513.96:308:21
1613.96:308:22
1713.96:318:22
1813.96:318:23
1913.96:328:23
2013.96:328:24
2113.96:338:24
2213.96:338:25
2313.96:338:25
2413.96:348:26
2513.96:348:26
2613.96:358:27
2713.96:368:27
2813.96:368:27
2913.96:378:28
3013.86:378:28
3113.86:388:28

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 6.34 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 3.22 kWh/m² to a high of 6.34 kWh/m² in December across the year — December's 6.34 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.0Intense
26.0Intense
36.1Intense
46.1Intense
56.1Intense
66.1Intense
76.1Intense
86.1Intense
96.2Intense
106.2Intense
116.2Intense
126.3Intense
136.3Intense
146.3Intense
156.3Intense
166.4Intense
176.4Intense
186.4Intense
196.4Intense
206.4Intense
216.5Intense
226.5Intense
236.5Intense
246.4Intense
256.4Intense
266.4Intense
276.4Intense
286.4Intense
296.3Intense
306.3Intense
316.3Intense
Planning a trip in December

Is December a good time to visit Chilecito?

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

5.1
Sightseeing
4th-best month of the year
4.3
Beach & pool
1st-best month of the year

December is a reasonable time to visit Chilecito for sightseeing.

What to pack for Chilecito in December

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

In December, Chilecito sees daytime highs around 24°C and nights near 15°C. Pack rain gear and sun protection. Worth having: light clothes. About 23 days see rain.

rain gearsun protectionlight clothes

UV index in Chilecito in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 15 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chilecito peaks around January 21 at about 16 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 22 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeHighModerateHighVery highExtremeJan 21UV 16Jun 22UV 4
UV index (midday)Level
Jan16Extreme
Feb16Extreme
Mar13Extreme
Apr8Very high
May5High
Jun4Moderate
Jul4Moderate
Aug6High
Sep9Very high
Oct13Extreme
Nov14Extreme
Dec15Extreme
Location & terrain

Where is Chilecito?

Chilecito sits at 29.2°S, 67.5°W, 1,107 m above sea level, in Argentina. The nearest listed city is La Rioja, 68 km away.

AguilaresAlbardónVilla General San Martín

Topography around Chilecito

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

Within 3 km, the terrain around Chilecito has significant variations in elevation — a maximum elevation change of 359 m around an average of 1,136 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,757 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,694 m.

The land around Chilecito is covered by shrubs (60%) and artificial surfaces (24%) within 3 km, shrubs (69%) within 16 km, and shrubs (49%), grassland (25%) and bare terrain (23%) within 80 km.

3 km
359 m
16 km
1,757 m
80 km
5,694 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
December weather nearby: La Rioja 68 km · Aimogasta 95 km · Belén 174 km · Catamarca 184 km · San Isidro 190 km · Aguilares 267 km · Albardón 272 km · Villa General San Martín 272 km

Argentina travel facts

Travel advisory
Level 1
Exercise Normal Precautions
Power plugs
Type C / I
220 V · 50 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$14,898
2025
Happiness
6.4 / 10
World Happiness, 2025
Homicide rate
4.5
per 100k, 2023
Road deaths
14.1
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
High
EF EPI 575
Religion
Roman Catholic 63%none 19%Evangelical 15%Jehovah's Witness and Church of Jesus 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 Chilecito (-29.1616°, -67.4993°, elevation 1,107 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).