Arroyito weather in December

In December, Arroyito sees average daytime highs of 30°C and overnight lows near 19°C, with 133 mm of rain across 10.2 wet days and about 14 hours of daylight. It is the 2nd-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 47% of the time in December, and the air most often feels humid.

Daylight stretches from about 13 h 54 min at the start of December to 14 hours by month's end. Set against the rest of the year, December is Arroyito's 5th-clearest and 6th-windiest month. For the whole year in context, see Arroyito's year-round climate.

Daytime high
30°
2nd warmest
Overnight low
19°
10th coldest
Rainfall
133 mm
10.2 wet days
Daylight
14 hours
6:07 AM – 8:09 PM
Cloud cover
45%
5th clearest
Wind
12 km/h
6th windiest
Solar energy
7.08 kWh/m²
Travel score
5.2
out of 10

Arroyito is city in Córdoba, Argentina.

Density
978/km²
people per km²
Founded
1778

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical December day in Arroyito 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 34°C. Set against its neighbours, December runs about 2°C warmer than November and on par with January.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
12918
22918
32918
42918
52918
62918
72918
82918
93018
103018
113018
123018
133018
143019
153019
163019
173019
183019
193019
203019
213019
223019
233019
243019
253020
263020
273020
283020
293020
303120
313120

Arroyito weather by month

How December compares with the rest of the year at a glance. December is the 2nd-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan30° / 20°12510.313.84.9
Feb29° / 19°1211013.15.6
Mar27° / 17°1289.812.26.6
Apr24° / 14°868.111.37.4
May20° / 11°405.210.47.1
Jun17° / 213.1106.6
Jul17° / 142.710.26.6
Aug20° / 263.210.97.7
Sep23° / 11°41511.87.9
Oct25° / 14°1029.112.87.2
Nov28° / 16°115913.66.4
Dec30° / 19°13310.2145.2

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 18% of December, with mostly cloudy or overcast conditions the remaining 35%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26436
36436
46535
56535
66535
76535
86535
96535
106634
116634
126634
136634
146634
156634
166535
176634
186634
196535
206535
216535
226535
236436
246436
256337
266436
276436
286337
296337
306337
316238

Chance of precipitation in December

Any precipitation

Arroyito gets around 133 mm of rain over 10.2 wet days in December, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 33% and peaks near 36% on the wettest days.

0%10%20%30%40%50%151015202531
Rain chance (%)
132
232
332
432
532
632
732
832
932
1032
1132
1232
1333
1433
1533
1633
1734
1834
1934
2034
2134
2234
2335
2435
2535
2635
2735
2835
2936
3036
3136

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 28% of days. Sticky, muggy-or-worse air turns up on roughly 31% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
12828271420
22828271430
32728271530
42727281530
52627281540
62626291540
72626291540
82525291550
92425301650
102424301650
112324301760
122224311760
132124311870
142023311970
151923312070
161823312080
171723302280
181622302390
191522302490
2014212925100
2113212927100
2213212827110
2312202728120
2411202629130
2511202630131
2610202531141
2710192431151
2810192432151
299182332161
309182333161
319172333171

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
112calm
212calm
312calm
412calm
512calm
612calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512calm
1612calm
1712calm
1812calm
1912calm
2012calm
2112calm
2212calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 13 h 54 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 6 minutes over December. Sunrise moves from 6:05 AM to 6:15 AM, and sunset from 7:59 PM to 8:16 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.96:057:59
213.96:058:00
313.96:058:00
413.96:058:01
513.96:058:02
614.06:058:03
714.06:058:03
814.06:058:04
914.06:068:05
1014.06:068:06
1114.06:068:06
1214.06:068:07
1314.06:068:08
1414.06:078:08
1514.06:078:09
1614.06:078:09
1714.06:088:10
1814.06:088:11
1914.06:088:11
2014.06:098:12
2114.06:098:12
2214.06:108:13
2314.06:108:13
2414.06:118:14
2514.06:118:14
2614.06:128:14
2714.06:128:15
2814.06:138:15
2914.06:148:15
3014.06:148:16
3114.06:158:16

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 7.08 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 2.6 kWh/m² to a high of 7.08 kWh/m² in December across the year — December's 7.08 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.0Intense
27.0Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
77.0Intense
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
217.1Intense
227.1Intense
237.1Intense
247.1Intense
257.1Intense
267.0Intense
277.0Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in December

Hazard calendar for Arroyito

In seasonPeak

In December, Arroyito sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Arroyito's rainy season runs October–April, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Arroyito?

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

5.2
Sightseeing
11th-best month of the year
7.0
Beach & pool
3rd-best month of the year

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

What to pack for Arroyito in December

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

In December, Arroyito sees daytime highs around 30°C and nights near 19°C. Pack light clothes and sun protection. Worth having: rain gear. About 10 days see rain.

light clothessun protectionrain gear

UV index in Arroyito in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Arroyito peaks around January 18 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near June 21 at about 3 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeModerateHighVery highExtremeJan 18UV 14Jun 21UV 3
UV index (midday)Level
Jan14Extreme
Feb13Extreme
Mar11Extreme
Apr7High
May4Moderate
Jun3Moderate
Jul3Moderate
Aug5Moderate
Sep7High
Oct10Very high
Nov12Extreme
Dec13Extreme
Location & terrain

Where is Arroyito?

Arroyito sits at 31.4°S, 63.1°W, 147 m above sea level, in Argentina. The nearest listed city is Villa del Rosario, 48 km away.

Topography around Arroyito

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

Within 3 km, the terrain around Arroyito has only modest variations in elevation — a maximum elevation change of 35 m around an average of 153 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 62 m; within 80 km, significant variations in elevation — a maximum elevation change of 269 m.

The land around Arroyito is covered by cropland (51%) and artificial surfaces (20%) within 3 km, cropland (87%) within 16 km, and cropland (87%) within 80 km.

3 km
35 m
16 km
62 m
80 km
269 m
treesgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Villa del Rosario 48 km · Las Varillas 59 km · Pilar 84 km · Río Segundo 86 km · San Francisco 92 km · Colonia Caroya 106 km · Cordoba 108 km · Jesús María 111 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 Arroyito (-31.4192°, -63.0508°, elevation 147 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).