Monte Caseros weather in December

In December, Monte Caseros sees average daytime highs of 30°C and overnight lows near 19°C, with 117 mm of rain across 9 wet days and about 13.9 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 13 h 54 min by month's end. Set against the rest of the year, December is Monte Caseros's 5th-clearest and 7th-windiest month. For the whole year in context, see Monte Caseros's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
19°
10th coldest
Rainfall
117 mm
9 wet days
Daylight
13 h 54 min
5:48 AM – 7:45 PM
Cloud cover
48%
5th clearest
Wind
13 km/h
7th windiest
Solar energy
7.09 kWh/m²
Travel score
5.1
out of 10

Monte Caseros is city in Corrientes, Argentina.

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 Monte Caseros 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 26°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
53018
63018
73018
83018
93019
103019
113019
123019
133019
143019
153019
163019
173019
183019
193119
203120
213120
223120
233120
243120
253120
263120
273120
283120
293120
303121
313121

How December really feels in Monte Caseros

Once humidity and wind are folded in, December averages 4 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
4
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.

Monte Caseros 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°1349.713.74.5
Feb30° / 20°1279.613.14.9
Mar29° / 19°1199.212.26.0
Apr25° / 15°1779.411.37.1
May21° / 12°1047.710.56.9
Jun19° / 10°1057.810.16.4
Jul18° / 856.710.26.6
Aug21° / 10°887.110.97.1
Sep23° / 12°1117.911.87.2
Oct25° / 15°16610.312.76.9
Nov28° / 17°129813.56.6
Dec30° / 19°117913.95.1

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 12% of December, with mostly cloudy or overcast conditions the remaining 41%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16040
26040
36040
46040
56040
66040
76040
86040
96040
106040
116040
126040
136040
146040
155941
166040
175941
185941
195842
205842
215941
225842
235842
245743
255743
265743
275743
285743
295842
305941
315941

Chance of precipitation in December

Any precipitation

Monte Caseros gets around 117 mm of rain over 9 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 32% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
128
227
327
427
527
626
726
826
926
1027
1127
1227
1328
1428
1529
1629
1730
1831
1931
2032
2132
2232
2332
2432
2532
2631
2731
2831
2930
3030
3130

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 43% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11826292260
21826282260
31726282260
41726282260
51725282370
61725282370
71725272380
81625272480
91625272580
101524262590
111524262690
1214242527100
1314232527100
1413232528110
1513222429110
1612212430120
1712202431131
1811202431141
1911192331141
2010182332151
2110182232162
2210172232172
239172132182
249162132193
259162032203
269152032213
279152031224
289152030234
298141931234
308141930244
318141930254

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 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
3013light breeze
3113light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 48 min at the start of December to 13 h 54 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 5:46 AM to 5:56 AM, and sunset from 7:35 PM to 7:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.85:467:35
213.85:467:35
313.85:467:36
413.85:467:37
513.95:467:38
613.95:467:38
713.95:467:39
813.95:467:40
913.95:477:40
1013.95:477:41
1113.95:477:42
1213.95:477:42
1313.95:487:43
1413.95:487:44
1513.95:487:44
1613.95:487:45
1713.95:497:46
1813.95:497:46
1913.95:507:47
2014.05:507:47
2114.05:507:48
2214.05:517:48
2314.05:517:49
2414.05:527:49
2513.95:527:49
2613.95:537:50
2713.95:547:50
2813.95:547:51
2913.95:557:51
3013.95:557:51
3113.95:567:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.09 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.46 kWh/m² to a high of 7.09 kWh/m² in December across the year — December's 7.09 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.1Intense
67.1Intense
77.1Intense
87.1Intense
97.1Intense
107.1Intense
117.1Intense
127.1Intense
137.1Intense
147.1Intense
157.1Intense
167.1Intense
177.1Intense
187.1Intense
197.1Intense
207.1Intense
217.0Intense
227.0Intense
237.0Intense
247.0Intense
257.0Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in December

Is December a good time to visit Monte Caseros?

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

5.1
Sightseeing
10th-best month of the year
7.1
Beach & pool
3rd-best month of the year

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

What to pack for Monte Caseros in December

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

In December, Monte Caseros 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 Monte Caseros 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 Monte Caseros 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
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7Very high
May4Moderate
Jun3Moderate
Jul4Moderate
Aug5High
Sep7High
Oct8Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Monte Caseros?

Monte Caseros sits at 30.3°S, 57.6°W, 24 m above sea level, in Argentina. The nearest listed city is Curuzú Cuatiá, 65 km away.

Topography around Monte Caseros

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

Within 3 km, the terrain around Monte Caseros has only modest variations in elevation — a maximum elevation change of 29 m around an average of 44 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 59 m; within 80 km, only modest variations in elevation — a maximum elevation change of 148 m.

The land around Monte Caseros is covered by grassland (36%) and water (30%) within 3 km, grassland (51%) and trees (22%) within 16 km, and grassland (74%) within 80 km.

3 km
29 m
16 km
59 m
80 km
148 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Curuzú Cuatiá 65 km · Chajarí 65 km · Uruguaiana 76 km · Paso de los Libres 80 km · Artigas 113 km · Quaraí 115 km · Mercedes 126 km · Salto 130 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 Monte Caseros (-30.2518°, -57.6354°, elevation 24 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).