Chajarí weather in December

In December, Chajarí sees average daytime highs of 30°C and overnight lows near 19°C, with 112 mm of rain across 8.6 wet days and about 14 hours of daylight. It is the 3rd-warmest and 7th-wettest month of the year here.

Highs climb over the month, from about 29°C in the first days to 31°C by the end. The sky is clear or mostly clear about 47% of the time in December, and the air most often feels muggy.

Daylight stretches from about 13 h 48 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Chajarí's 5th-clearest and 7th-windiest month. For the whole year in context, see Chajarí's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
112 mm
8.6 wet days
Daylight
14 hours
5:49 AM – 7:48 PM
Cloud cover
47%
5th clearest
Wind
13 km/h
7th windiest
Solar energy
7.14 kWh/m²
Travel score
5.3
out of 10

Chajarí is city in Argentina.

Founded
1872

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 29°C in the first days to 31°C by the end.

A typical December day in Chajarí reaches about 30°C in the afternoon and slips back to 19°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 35°C. Set against its neighbours, December runs about 2°C warmer than November and about 1°C cooler than January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12918
22918
32918
42918
52918
62918
72918
82918
93019
103019
113019
123019
133019
143019
153019
163019
173019
183019
193019
203020
213020
223120
233120
243120
253120
263120
273120
283120
293120
303120
313121

How December really feels in Chajarí

Once humidity and wind are folded in, December averages 2 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
2
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in December is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Chajarí weather by month

How December compares with the rest of the year at a glance. December is the 3rd-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°1248.613.84.7
Feb30° / 20°117913.15.1
Mar28° / 19°1158.812.26.3
Apr25° / 15°165911.37.2
May21° / 12°997.310.56.8
Jun18° / 10°937.7106.3
Jul18° / 806.810.26.4
Aug20° / 10°886.810.97.0
Sep22° / 12°987.811.87.1
Oct25° / 15°1539.912.87.0
Nov28° / 17°1187.313.66.8
Dec30° / 19°1128.6145.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 47% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 14% of December, with mostly cloudy or overcast conditions the remaining 39%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16139
26139
36139
46238
56238
66238
76238
86337
96337
106337
116436
126337
136337
146337
156238
166238
176139
186139
196040
206040
216040
225941
235941
245941
255842
265842
275941
285941
295941
305941
316139

Chance of precipitation in December

Any precipitation

Chajarí gets around 112 mm of rain over 8.6 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 28% and peaks near 30% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
126
225
326
426
526
626
726
827
927
1027
1127
1228
1328
1428
1529
1629
1730
1830
1930
2030
2130
2229
2329
2429
2529
2628
2728
2828
2927
3027
3127

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the muggy band about 27% of days. Sticky, muggy-or-worse air turns up on roughly 41% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11827282150
21827272160
31827272260
41827272260
51826272260
61826272370
71826262370
81726272370
91725262480
101625262480
111625262580
121524262690
131424262690
1414232627100
1513232628100
1612222629110
1711212629121
1811202530131
1910192530141
2010192531151
219182531161
229172431172
239172431182
249162331192
259162331193
268152231203
278152231213
288142131223
298142131223
308142131234
318142131234

Wind in December

Winds average 13 km/h in December.

Across December, 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
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
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 14 hours by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 5:46 AM to 5:56 AM, and sunset from 7:37 PM to 7:54 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:467:37
213.95:467:38
313.95:467:39
413.95:467:39
513.95:467:40
613.95:467:41
713.95:477:42
813.95:477:42
913.95:477:43
1013.95:477:44
1114.05:477:44
1214.05:477:45
1314.05:487:46
1414.05:487:46
1514.05:487:47
1614.05:497:48
1714.05:497:48
1814.05:497:49
1914.05:507:49
2014.05:507:50
2114.05:517:50
2214.05:517:51
2314.05:527:51
2414.05:527:52
2514.05:537:52
2614.05:537:52
2714.05:547:53
2814.05:547:53
2914.05:557:53
3014.05:557:54
3114.05:567:54

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.14 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.42 kWh/m² to a high of 7.14 kWh/m² in December across the year — December's 7.14 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.1Intense
177.1Intense
187.1Intense
197.1Intense
207.1Intense
217.1Intense
227.1Intense
237.1Intense
247.1Intense
257.1Intense
267.1Intense
277.1Intense
287.1Intense
297.1Intense
307.1Intense
317.1Intense
Planning a trip in December

Is December a good time to visit Chajarí?

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

5.3
Sightseeing
10th-best month of the year
7.2
Beach & pool
2nd-best month of the year

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

What to pack for Chajarí in December

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

In December, Chajarí sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Chajarí 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 Chajarí peaks around January 20 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 19 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 20UV 13Jun 19UV 3
UV index (midday)Level
Jan13Extreme
Feb13Extreme
Mar11Extreme
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7High
Oct7Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Chajarí?

Chajarí sits at 30.8°S, 58.0°W, 35 m above sea level, in Argentina. The nearest listed city is Monte Caseros, 65 km away.

Topography around Chajarí

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

Within 3 km, the terrain around Chajarí has only modest variations in elevation — a maximum elevation change of 38 m around an average of 58 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 58 m; within 80 km, only modest variations in elevation — a maximum elevation change of 163 m.

The land around Chajarí is covered by grassland (56%) and artificial surfaces (28%) within 3 km, grassland (57%) and trees (35%) within 16 km, and grassland (72%) within 80 km.

3 km
38 m
16 km
58 m
80 km
163 m
treesgrasslandcroplandartificial surfaceswater
December weather nearby: Monte Caseros 65 km · Salto 70 km · Concordia 71 km · Federal 79 km · Curuzú Cuatiá 107 km · Uruguaiana 140 km · Paso de los Libres 144 km · Artigas 150 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 Chajarí (-30.7548°, -57.982°, elevation 35 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).