Coatzacoalcos weather in December

In December, Coatzacoalcos sees average daytime highs of 25°C and overnight lows near 22°C, with 95 mm of rain across 14 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 7th-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 42% of the time in December, and the air most often feels oppressive.

Daylight stretches from about 11 hours at the start of December to 10 h 54 min by month's end. Set against the rest of the year, December is Coatzacoalcos's 5th-clearest and 4th-windiest month. For the whole year in context, see Coatzacoalcos's year-round climate.

Daytime high
25°
11th warmest
Overnight low
22°
3rd coldest
Rainfall
95 mm
14 wet days
Daylight
10 h 54 min
6:46 AM – 5:41 PM
Cloud cover
52%
5th clearest
Wind
14 km/h
4th windiest
Solar energy
3.61 kWh/m²
Travel score
6.3
out of 10

Coatzacoalcos is municipal seat of Coatzacoalcos, State of Veracruz, Mexico.

Density
660/km²
people per km²
Founded
1520

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 25°C through the month.

A typical December day in Coatzacoalcos reaches about 25°C in the afternoon and slips back to 22°C overnight — a 3°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 28°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12623
22623
32623
42623
52623
62623
72623
82623
92622
102622
112522
122522
132522
142522
152522
162522
172522
182522
192522
202522
212522
222522
232522
242522
252522
262522
272522
282522
292522
302522
312522

How December really feels in Coatzacoalcos

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.

Coatzacoalcos weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 7th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan25° / 21°9311.6116.8
Feb26° / 22°436.911.47.4
Mar28° / 23°27511.97.4
Apr30° / 25°234.312.46.1
May31° / 26°639.812.84.9
Jun30° / 26°22922.313.13.5
Jul29° / 26°25725.9133.4
Aug29° / 26°29526.312.63.3
Sep29° / 26°32626.512.13.3
Oct28° / 25°26721.411.64.5
Nov27° / 24°17316.311.15.7
Dec25° / 22°951410.96.3

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 42% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 19% of December, with mostly cloudy or overcast conditions the remaining 40%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16535
26535
36535
46535
56535
66535
76634
86634
96634
106634
116535
126436
136337
146238
156238
166139
176040
185941
195842
205842
215743
225644
235644
245545
255545
265446
275446
285446
295446
305446
315446

Chance of precipitation in December

Any precipitation

Coatzacoalcos gets around 95 mm of rain over 14 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 46% and peaks near 49% on the wettest days.

0%20%40%60%151015202531
Rain chance (%)
149
249
349
449
549
649
749
849
948
1048
1148
1247
1347
1446
1546
1645
1745
1844
1944
2044
2144
2243
2343
2443
2543
2644
2744
2844
2943
3043
3143

Humidity in December

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, December lands in the oppressive band about 48% of days. Sticky, muggy-or-worse air turns up on roughly 86% of them.

0%25%50%75%100%151015202531
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
11734553
21735543
31735543
41735543
52835532
62835532
72835532
82934532
92934532
103934522
1131034512
1231034521
1331035511
1431135501
1531135491
1631135491
1741136481
1841236481
1941237471
2031237461
2131238461
2231239450
2331240450
2431240440
2531241440
2631341430
2731341430
2831442420
2931442410
3031542400
3131542400

Wind in December

Winds average 14 km/h in December.

Across December, daily wind ranges from about 14 km/h on the calmest days to 15 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
1214light breeze
1314light breeze
1414light breeze
1514light breeze
1614light breeze
1714light breeze
1814light breeze
1914light breeze
2014light breeze
2115light breeze
2215light breeze
2315light breeze
2415light breeze
2515light breeze
2615light breeze
2715light breeze
2815light breeze
2915light breeze
3015light breeze
3115light breeze

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 hours at the start of December to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 6 minutes over December. Sunrise moves from 6:38 AM to 6:53 AM, and sunset from 5:37 PM to 5:49 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:385:37
211.06:385:37
311.06:395:38
411.06:405:38
511.06:405:38
611.06:415:38
711.06:415:38
810.96:425:39
910.96:435:39
1010.96:435:39
1110.96:445:40
1210.96:445:40
1310.96:455:40
1410.96:455:41
1510.96:465:41
1610.96:465:41
1710.96:475:42
1810.96:475:42
1910.96:485:43
2010.96:485:43
2110.96:495:44
2210.96:495:44
2310.96:505:45
2410.96:505:45
2510.96:515:46
2610.96:515:46
2710.96:525:47
2810.96:525:47
2910.96:525:48
3010.96:535:48
3110.96:535:49

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.61 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.61 kWh/m² to a high of 6.63 kWh/m² in May across the year — December's 3.61 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.7Moderate
23.7Moderate
33.7Moderate
43.7Moderate
53.7Moderate
63.7Moderate
73.7Moderate
83.6Moderate
93.6Moderate
103.6Moderate
113.6Moderate
123.6Moderate
133.6Moderate
143.6Moderate
153.6Moderate
163.6Moderate
173.6Moderate
183.6Moderate
193.5Moderate
203.5Moderate
213.5Moderate
223.5Moderate
233.5Moderate
243.5Moderate
253.5Moderate
263.5Moderate
273.5Moderate
283.5Moderate
293.5Moderate
303.5Moderate
313.5Moderate
Planning a trip in December

Hazard calendar for Coatzacoalcos

In seasonPeak

None of Coatzacoalcos's seasonal hazards are active in December. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Coatzacoalcos sits in the Atlantic hurricane belt; the season peaks August–October.

Coatzacoalcos's monsoon runs June–November, when most of the year's rain falls.

Atlantic hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is December a good time to visit Coatzacoalcos?

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

6.3
Sightseeing
4th-best month of the year
5.8
Beach & pool
6th-best month of the year

December is a reasonable time to visit Coatzacoalcos for sightseeing.

What to pack for Coatzacoalcos in December

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

In December, Coatzacoalcos sees daytime highs around 25°C and nights near 22°C. Pack rain gear. Worth having: light clothes. About 14 days see rain.

rain gearlight clothes

Sea temperature near Coatzacoalcos in December

The nearest coast averages about 25°C in December — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea offshore is warmest in September at about 29°C and coldest in February near 24°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Warm
Feb24Warm
Mar25Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov27Warm
Dec25Warm

UV index in Coatzacoalcos in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Coatzacoalcos peaks around August 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highAug 16UV 12Dec 21UV 7
UV index (midday)Level
Jan7Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May10Very high
Jun13Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Coatzacoalcos 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 Coatzacoalcos is worst in May — around 43 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (January, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1842 µg/m³Jan 1816 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar22Moderate
Apr31Moderate
May43Poor
Jun34Moderate
Jul36Poor
Aug29Moderate
Sep25Moderate
Oct18Moderate
Nov17Moderate
Dec18Moderate
Location & terrain

Where is Coatzacoalcos?

Coatzacoalcos sits at 18.1°N, 94.4°W, 11 m above sea level, in Mexico. The nearest listed city is Allende, 5.0 km away.

Topography around Coatzacoalcos

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

Within 3 km, the terrain around Coatzacoalcos has only modest variations in elevation — a maximum elevation change of 52 m around an average of 7 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 105 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,661 m.

The land around Coatzacoalcos is covered by artificial surfaces (53%) and water (41%) within 3 km, water (48%) within 16 km, and grassland (39%), water (29%) and trees (24%) within 80 km.

3 km
52 m
16 km
105 m
80 km
1,661 m
treesgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
December weather nearby: Allende 5.0 km · Nanchital de Lázaro Cárdenas del Río 9.0 km · Fraccionamiento Ciudad Olmeca 11 km · Minatitlán 20 km · Cosoleacaque 26 km · Agua Dulce 32 km · Jáltipan de Morelos 35 km · Las Choapas 45 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 Coatzacoalcos (18.149°, -94.4447°, elevation 11 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).