Ciudad Acuña weather in December

In December, Ciudad Acuña sees average daytime highs of 18°C and overnight lows near 7°C, with 22 mm of rain across 3.8 wet days and about 10.2 hours of daylight. It is the 11th-warmest and 11th-wettest month of the year here.

Highs ease over the month, from about 20°C in the first days to 18°C by the end. The sky is clear or mostly clear about 51% of the time in December, and the air most often feels dry.

Daylight stretches from about 10 h 18 min at the start of December to 10 h 06 min by month's end. Set against the rest of the year, December is Ciudad Acuña's 8th-clearest and 11th-windiest month. For the whole year in context, see Ciudad Acuña's year-round climate.

Daytime high
18°
11th warmest
Overnight low
2nd coldest
Rainfall
22 mm
3.8 wet days
Daylight
10 h 06 min
7:36 AM – 5:44 PM
Cloud cover
46%
8th clearest
Wind
13 km/h
11th windiest
Solar energy
3.13 kWh/m²
Travel score
7.1
out of 10

Ciudad Acuña is municipal seat of Acuña, State of Coahuila, Mexico.

Founded
1877

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

Temperature in December

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 20°C in the first days to 18°C by the end.

A typical December day in Ciudad Acuña reaches about 18°C in the afternoon and slips back to 7°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 12°C and 24°C. Set against its neighbours, December runs about 4°C cooler than November and on par with January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
1209
2208
3208
4208
5198
6198
7198
8198
9197
10197
11197
12197
13197
14197
15187
16187
17187
18187
19187
20186
21186
22186
23186
24186
25186
26186
27186
28186
29186
30186
31186

How December really feels in Ciudad Acuña

Once humidity and wind are folded in, December averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

December sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ciudad Acuña weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 11th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan18° / 223.510.37.1
Feb21° / 23410.97.6
Mar25° / 13°385.211.87.7
Apr29° / 17°425.112.76.2
May33° / 21°647.613.43.9
Jun36° / 24°39613.82.5
Jul36° / 25°415.513.72.1
Aug36° / 25°414.713.12.1
Sep33° / 22°657.512.23.9
Oct28° / 17°55611.36.6
Nov23° / 11°304.410.57.9
Dec18° / 223.810.27.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 51% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 9% of December, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15941
25941
35842
45842
55941
65842
75842
85941
95941
106040
116040
126139
136238
146238
156238
166337
176436
186436
196337
206337
216337
226238
236139
246040
255941
265941
275743
285743
295743
305743
315743

Chance of precipitation in December

Any precipitation

Ciudad Acuña gets around 22 mm of rain over 3.8 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 12% and peaks near 13% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
113
213
313
413
513
613
713
813
912
1012
1112
1212
1312
1412
1511
1611
1711
1811
1911
2011
2112
2212
2312
2412
2512
2612
2712
2812
2912
3012
3111

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 90% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1831061
284961
384961
485861
587850
687850
788750
888750
989740
1089740
1190640
1291630
1391630
1491630
1592530
1693520
1793520
1893520
1993520
2094420
2194420
2294420
2394420
2494420
2594420
2694420
2794420
2894420
2994420
3094420
3194420

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.

051015151015202531
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 10 h 18 min at the start of December to 10 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over December. Sunrise moves from 7:26 AM to 7:43 AM, and sunset from 5:41 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
110.37:265:41
210.27:275:41
310.27:275:41
410.27:285:41
510.27:295:41
610.27:305:42
710.27:305:42
810.27:315:42
910.27:325:42
1010.27:325:42
1110.27:335:42
1210.27:345:43
1310.17:345:43
1410.17:355:43
1510.17:355:44
1610.17:365:44
1710.17:375:44
1810.17:375:45
1910.17:385:45
2010.17:385:45
2110.17:395:46
2210.17:395:46
2310.17:405:47
2410.17:405:47
2510.17:405:48
2610.17:415:48
2710.17:415:49
2810.17:425:50
2910.17:425:50
3010.17:425:51
3110.17:435:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.13 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.13 kWh/m² to a high of 6.87 kWh/m² in July across the year — December's 3.13 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.2Moderate
23.2Moderate
33.2Moderate
43.2Moderate
53.1Moderate
63.1Moderate
73.1Moderate
83.1Moderate
93.1Moderate
103.1Moderate
113.1Moderate
123.1Moderate
133.1Moderate
143.1Moderate
153.1Moderate
163.1Moderate
173.1Moderate
183.1Moderate
193.1Moderate
203.1Moderate
213.1Moderate
223.1Moderate
233.1Moderate
243.1Moderate
253.1Moderate
263.2Moderate
273.2Moderate
283.2Moderate
293.2Moderate
303.2Moderate
313.2Moderate
Planning a trip in December

Is December a good time to visit Ciudad Acuña?

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

7.1
Sightseeing
4th-best month of the year
2.7
Beach & pool
11th-best month of the year

December is one of the better times to visit Ciudad Acuña for general sightseeing.

What to pack for Ciudad Acuña in December

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

In December, Ciudad Acuña sees daytime highs around 18°C and nights near 7°C. Worth packing: a warm layer. About 4 days see rain.

a warm layer

UV index in Ciudad Acuña in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 4 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ciudad Acuña peaks around June 23 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecModerateHighVery highExtremeVery highHighModerateJun 23UV 11Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar8Very high
Apr10Very high
May10Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov5Moderate
Dec4Moderate

Air quality in Ciudad Acuña in December

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where December falls, not just the annual average.

Air quality in Ciudad Acuña is worst in July — around 17 µg/m³ PM2.5 (moderate), about 2.9× the cleanest month (January, 6 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1516 µg/m³Jan 166 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar7Good
Apr8Good
May13Moderate
Jun14Moderate
Jul17Moderate
Aug12Moderate
Sep10Good
Oct7Good
Nov7Good
Dec6Good
Location & terrain

Where is Ciudad Acuña?

Ciudad Acuña sits at 29.3°N, 101.0°W, 283 m above sea level, in Mexico. The nearest listed city is Del Rio, 7.0 km away.

Topography around Ciudad Acuña

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

Within 3 km, the terrain around Ciudad Acuña has only modest variations in elevation — a maximum elevation change of 68 m around an average of 287 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 147 m; within 80 km, large variations in elevation — a maximum elevation change of 1,150 m.

The land around Ciudad Acuña is covered by artificial surfaces (53%) and trees (20%) within 3 km, shrubs (76%) within 16 km, and shrubs (81%) within 80 km.

3 km
68 m
16 km
147 m
80 km
1,150 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
December weather nearby: Del Rio 7.0 km · Piedras Negras 81 km · Eagle Pass 81 km · Nava 102 km · Allende 110 km · Uvalde 114 km · Nueva Rosita 156 km · Sabinas 164 km

Mexico travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type A / B
120 / 127 V · 60 Hz
Prices
≈ 54% of US
price level, 2025
GDP per capita
$13,889
2025
Happiness
7.0 / 10
World Happiness, 2025
Safe drinking water
43%
of population, 2024
Homicide rate
24.9
per 100k, 2023
Road deaths
12.8
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Very low
EF EPI 440
Religion
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 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 Ciudad Acuña (29.3232°, -100.9522°, elevation 283 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. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).