Chacabuco weather in December

In December, Chacabuco sees average daytime highs of 28°C and overnight lows near 16°C, with 101 mm of rain across 8.8 wet days and about 14.3 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Highs climb over the month, from about 27°C in the first days to 29°C by the end. The sky is clear or mostly clear about 53% of the time in December, and the air most often feels dry.

Daylight stretches from about 14 h 12 min at the start of December to 14 h 18 min by month's end. Set against the rest of the year, December is Chacabuco's 2nd-clearest and 6th-windiest month. For the whole year in context, see Chacabuco's year-round climate.

Daytime high
28°
2nd warmest
Overnight low
16°
10th coldest
Rainfall
101 mm
8.8 wet days
Daylight
14 h 18 min
5:49 AM – 8:07 PM
Cloud cover
42%
2nd clearest
Wind
13 km/h
6th windiest
Solar energy
7.42 kWh/m²
Travel score
6.4
out of 10

Chacabuco is human settlement in Argentina.

Founded
1865

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 27°C in the first days to 29°C by the end.

A typical December day in Chacabuco reaches about 28°C in the afternoon and slips back to 16°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 33°C. Set against its neighbours, December runs about 3°C warmer than November and about 1°C cooler than January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12715
22715
32715
42715
52715
62715
72715
82815
92815
102816
112816
122816
132816
142816
152816
162816
172816
182816
192916
202917
212917
222917
232917
242917
252917
262917
272917
282917
292917
302917
312917

Chacabuco weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 17°1078.914.15.9
Feb28° / 17°1057.913.36.7
Mar26° / 15°988.212.37.2
Apr22° / 12°978.511.27.2
May19° / 666.310.26.5
Jun15° / 445.19.75.3
Jul15° / 364.79.95.0
Aug17° / 474.610.76.4
Sep19° / 676.411.86.8
Oct22° / 11°1169.712.96.9
Nov25° / 14°1028.413.87.2
Dec28° / 16°1018.814.36.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 53% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 13% of December, with mostly cloudy or overcast conditions the remaining 33%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26535
36535
46634
56733
66733
76733
86733
96733
106733
116733
126733
136634
146634
156733
166733
176634
186733
196733
206733
216634
226634
236634
246733
256733
266733
276733
286733
296733
306733
316733

Chance of precipitation in December

Any precipitation

Chacabuco gets around 101 mm of rain over 8.8 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 29% and peaks near 31% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
127
227
327
427
527
627
727
827
927
1028
1128
1229
1329
1430
1531
1631
1731
1831
1931
2031
2131
2231
2331
2431
2530
2630
2730
2829
2929
3029
3129

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 32% of days. Sticky, muggy-or-worse air turns up on roughly 15% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
148262140
247272250
346272250
446272250
545272360
644272360
743272360
842282470
940282470
1039292470
1138292581
1237302581
1335302591
1434302691
15333026101
16313126111
17303027121
18293027131
19283027142
20262927152
21252927162
22242827182
23232827193
24232727203
25222627214
26212528224
27212428234
28202328245
29192328255
30192228265
31182228265

Wind in December

Winds average 13 km/h in December.

Across December, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202531
Wind speed (km/h)Feels
113light breeze
213light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3012light breeze
3112light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 h 12 min at the start of December to 14 h 18 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 5:47 AM to 5:56 AM, and sunset from 7:56 PM to 8:14 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.25:477:56
214.25:477:57
314.25:477:58
414.25:477:59
514.25:478:00
614.25:478:00
714.25:478:01
814.25:478:02
914.35:478:03
1014.35:478:03
1114.35:478:04
1214.35:488:05
1314.35:488:05
1414.35:488:06
1514.35:488:07
1614.35:498:07
1714.35:498:08
1814.35:498:09
1914.35:508:09
2014.35:508:10
2114.35:518:10
2214.35:518:11
2314.35:528:11
2414.35:528:11
2514.35:538:12
2614.35:538:12
2714.35:548:13
2814.35:548:13
2914.35:558:13
3014.35:568:14
3114.35:568:14

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.42 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.28 kWh/m² to a high of 7.42 kWh/m² in December across the year — December's 7.42 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.4Intense
47.4Intense
57.4Intense
67.4Intense
77.4Intense
87.4Intense
97.4Intense
107.4Intense
117.4Intense
127.4Intense
137.4Intense
147.4Intense
157.4Intense
167.4Intense
177.4Intense
187.4Intense
197.4Intense
207.4Intense
217.4Intense
227.4Intense
237.4Intense
247.4Intense
257.4Intense
267.4Intense
277.4Intense
287.3Intense
297.3Intense
307.3Intense
317.3Intense
Planning a trip in December

Is December a good time to visit Chacabuco?

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

6.4
Sightseeing
8th-best month of the year
7.3
Beach & pool
2nd-best month of the year

December is a reasonable time to visit Chacabuco for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Chacabuco in December

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

In December, Chacabuco sees daytime highs around 28°C and nights near 16°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Chacabuco in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Chacabuco peaks around January 14 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 20 at about 3 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — in 10 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 14UV 13Jun 20UV 3
UV index (midday)Level
Jan13Extreme
Feb11Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Chacabuco?

Chacabuco sits at 34.6°S, 60.5°W, 66 m above sea level, in Argentina. The nearest listed city is Salto, 44 km away.

Topography around Chacabuco

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

Within 3 km, the terrain around Chacabuco has only modest variations in elevation — a maximum elevation change of 20 m around an average of 70 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 38 m; within 80 km, only modest variations in elevation — a maximum elevation change of 89 m.

The land around Chacabuco is covered by cropland (31%), artificial surfaces (31%) and grassland (21%) within 3 km, cropland (89%) within 16 km, and cropland (85%) within 80 km.

3 km
20 m
16 km
38 m
80 km
89 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Salto 44 km · Junín 44 km · Chivilcoy 50 km · Bragado 53 km · Rojas 55 km · Los Toldos 65 km · Carmen de Areco 66 km · Arrecifes 73 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 Chacabuco (-34.642°, -60.4712°, elevation 66 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).