Casilda weather in December

In December, Casilda sees average daytime highs of 29°C and overnight lows near 17°C, with 112 mm of rain across 8.7 wet days and about 14.1 hours of daylight. It is the 2nd-warmest and 3rd-wettest month of the year here.

Highs climb over the month, from about 28°C in the first days to 30°C by the end. The sky is clear or mostly clear about 49% of the time in December, and the air most often feels humid.

Daylight stretches from about 14 hours at the start of December to 14 h 12 min by month's end. Set against the rest of the year, December is Casilda's 3rd-clearest and 6th-windiest month. For the whole year in context, see Casilda's year-round climate.

Daytime high
29°
2nd warmest
Overnight low
17°
10th coldest
Rainfall
112 mm
8.7 wet days
Daylight
14 h 12 min
5:56 AM – 8:06 PM
Cloud cover
44%
3rd clearest
Wind
12 km/h
6th windiest
Solar energy
7.32 kWh/m²
Travel score
6.0
out of 10

Casilda is city in the province of Santa Fe, Argentina.

Density
83/km²
people per km²

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 28°C in the first days to 30°C by the end.

A typical December day in Casilda reaches about 29°C in the afternoon and slips back to 17°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 33°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12816
22816
32816
42816
52816
62816
72817
82817
92817
102917
112917
122917
132917
142917
152917
162917
172917
182918
192918
202918
212918
222918
232918
242918
252918
262918
272918
283018
293019
303019
313019

Casilda weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 19°1078.813.95.6
Feb28° / 18°1108.513.26.2
Mar27° / 16°1278.412.37.1
Apr23° / 13°998.211.27.3
May19° / 10°645.810.36.8
Jun16° / 324.29.95.9
Jul16° / 304.6105.7
Aug18° / 494.610.86.9
Sep21° / 545.811.87.3
Oct24° / 13°1089.312.87.2
Nov27° / 15°1148.613.77.0
Dec29° / 17°1128.714.16.0

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 49% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 15% of December, with mostly cloudy or overcast conditions the remaining 36%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16436
26436
36436
46535
56535
66535
76634
86634
96634
106634
116634
126535
136535
146535
156535
166535
176436
186436
196436
206436
216337
226337
236337
246337
256238
266238
276238
286238
296238
306238
316238

Chance of precipitation in December

Any precipitation

Casilda gets around 112 mm of rain over 8.7 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 (%)
128
228
327
427
527
627
727
827
927
1028
1128
1228
1329
1429
1530
1630
1731
1831
1931
2031
2131
2230
2330
2430
2530
2630
2730
2829
2929
3029
3130

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the humid band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 23% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1362629810
2362629810
3352630810
4342631820
5332631820
6322532920
7312532920
8302533920
92925331020
102825341030
112725341130
122625351230
132525351330
142424351430
152324351530
162224351630
172123351740
182023341840
191923341950
201922332060
211822322260
221722312370
231622302480
241521292590
2514212926100
2614212827100
2713212727110
2812212728120
2912212628120
3011212629131
3110212629131

Wind in December

Winds average 12 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2312calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 14 hours at the start of December to 14 h 12 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 12 minutes over December. Sunrise moves from 5:54 AM to 6:03 AM, and sunset from 7:55 PM to 8:12 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
114.05:547:55
214.05:547:56
314.15:547:57
414.15:547:58
514.15:547:58
614.15:547:59
714.15:548:00
814.15:548:01
914.15:548:01
1014.15:548:02
1114.15:548:03
1214.15:558:03
1314.25:558:04
1414.25:558:05
1514.25:558:05
1614.25:568:06
1714.25:568:07
1814.25:568:07
1914.25:578:08
2014.25:578:08
2114.25:588:09
2214.25:588:09
2314.25:598:10
2414.25:598:10
2514.26:008:10
2614.26:008:11
2714.26:018:11
2814.26:018:12
2914.26:028:12
3014.26:038:12
3114.26:038:12

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.32 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.41 kWh/m² to a high of 7.32 kWh/m² in December across the year — December's 7.32 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.2Intense
27.2Intense
37.3Intense
47.3Intense
57.3Intense
67.3Intense
77.3Intense
87.3Intense
97.3Intense
107.3Intense
117.3Intense
127.3Intense
137.3Intense
147.3Intense
157.3Intense
167.3Intense
177.3Intense
187.3Intense
197.3Intense
207.3Intense
217.3Intense
227.3Intense
237.3Intense
247.3Intense
257.3Intense
267.3Intense
277.3Intense
287.2Intense
297.2Intense
307.2Intense
317.2Intense
Planning a trip in December

Is December a good time to visit Casilda?

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

6.0
Sightseeing
9th-best month of the year
7.3
Beach & pool
2nd-best month of the year

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

What to pack for Casilda in December

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

In December, Casilda sees daytime highs around 29°C and nights near 17°C. Pack light clothes and sun protection. Worth having: rain gear. About 9 days see rain.

light clothessun protectionrain gear

UV index in Casilda 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 Casilda peaks around January 15 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 11 months of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateHighVery highExtremeJan 15UV 13Jun 20UV 3
UV index (midday)Level
Jan14Extreme
Feb12Extreme
Mar10Very high
Apr6High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug4Moderate
Sep6High
Oct9Very high
Nov11Extreme
Dec12Extreme
Location & terrain

Where is Casilda?

Casilda sits at 33.0°S, 61.2°W, 73 m above sea level, in Argentina. The nearest listed city is Carcarañá, 21 km away.

Topography around Casilda

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

Within 3 km, the terrain around Casilda has only modest variations in elevation — a maximum elevation change of 23 m around an average of 72 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 61 m; within 80 km, only modest variations in elevation — a maximum elevation change of 133 m.

The land around Casilda is covered by cropland (60%) and artificial surfaces (27%) within 3 km, cropland (95%) within 16 km, and cropland (81%) within 80 km.

3 km
23 m
16 km
61 m
80 km
133 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Carcarañá 21 km · Cañada de Gómez 33 km · Pérez 37 km · Granadero Baigorria 47 km · Capitán Bermúdez 48 km · Gobernador Gálvez 49 km · Rosario 50 km · Firmat 55 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 Casilda (-33.0446°, -61.1642°, elevation 73 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).