Acayucan weather in December

In December, Acayucan sees average daytime highs of 27°C and overnight lows near 19°C, with 36 mm of rain across 8.2 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 28% of the time in December, and the air most often feels muggy.

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 Acayucan's 6th-clearest and 6th-windiest month. For the whole year in context, see Acayucan's year-round climate.

Daytime high
27°
11th warmest
Overnight low
19°
3rd coldest
Rainfall
36 mm
8.2 wet days
Daylight
10 h 54 min
6:48 AM – 5:44 PM
Cloud cover
58%
6th clearest
Wind
8 km/h
6th windiest
Solar energy
3.46 kWh/m²
Travel score
6.8
out of 10

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

Founded
1848

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 27°C through the month.

A typical December day in Acayucan reaches about 27°C in the afternoon and slips back to 19°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 22°C and 30°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12720
22720
32719
42719
52719
62719
72719
82719
92719
102719
112719
122719
132719
142719
152719
162719
172719
182719
192719
202719
212619
222619
232619
242619
252619
262619
272619
282619
292619
302619
312619

How December really feels in Acayucan

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.

Acayucan weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 18°437.9117.0
Feb28° / 19°204.511.46.7
Mar31° / 21°163.911.95.2
Apr34° / 23°204.212.43.7
May35° / 24°619.512.82.8
Jun33° / 24°1992213.12.4
Jul32° / 23°22024.8132.6
Aug32° / 23°24625.812.62.6
Sep31° / 23°27525.212.12.8
Oct30° / 22°18819.511.64.0
Nov28° / 20°8812.411.25.8
Dec27° / 19°368.210.96.8

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 28% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 23% of December, with mostly cloudy or overcast conditions the remaining 48%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15743
25743
35842
45842
55842
65842
75842
85842
95842
105743
115644
125644
135545
145446
155347
165248
175248
185050
194951
204852
214852
224753
234753
244654
254555
264555
274456
284456
294456
304654
314654

Chance of precipitation in December

Any precipitation

Acayucan gets around 36 mm of rain over 8.2 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 27% and peaks near 29% on the wettest days.

0%10%20%30%40%151015202531
Rain chance (%)
129
229
329
428
528
628
728
827
927
1027
1127
1227
1327
1427
1528
1628
1728
1828
1927
2027
2127
2227
2327
2427
2527
2627
2727
2827
2927
3027
3126

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 48% of days. Sticky, muggy-or-worse air turns up on roughly 70% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
112184731
212194731
313194730
413204730
513204729
613204729
713214728
814214728
914214727
1015214726
1115224726
1215224725
1316224724
1416234723
1516234723
1617234722
1717244721
1817254720
1917254720
2017264719
2117264818
2217274817
2317274917
2417274916
2517284915
2616285015
2716295014
2816294914
2917304913
3017304913
3117314913

Wind in December

Winds average 8 km/h in December.

Across December, daily wind ranges from about 8 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
308calm
318calm

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 6:39 AM to 6:55 AM, and sunset from 5:39 PM to 5:51 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:395:39
211.06:405:40
311.06:415:40
411.06:415:40
511.06:425:40
611.06:425:40
711.06:435:41
811.06:435:41
911.06:445:41
1010.96:455:42
1110.96:455:42
1210.96:465:42
1310.96:465:43
1410.96:475:43
1510.96:475:43
1610.96:485:44
1710.96:485:44
1810.96:495:45
1910.96:495:45
2010.96:505:45
2110.96:505:46
2210.96:515:46
2310.96:515:47
2410.96:525:47
2510.96:525:48
2610.96:535:48
2710.96:535:49
2810.96:545:49
2910.96:545:50
3010.96:545:50
3110.96:555:51

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 3.46 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 3.46 kWh/m² to a high of 6.49 kWh/m² in May across the year — December's 3.46 kWh/m² sits near the bottom.

01234151015202531
Solar energy (kWh/m²)Level
13.6Moderate
23.6Moderate
33.6Moderate
43.5Moderate
53.5Moderate
63.5Moderate
73.5Moderate
83.5Moderate
93.5Moderate
103.5Moderate
113.5Moderate
123.5Moderate
133.5Moderate
143.5Moderate
153.5Moderate
163.4Moderate
173.4Moderate
183.4Moderate
193.4Moderate
203.4Moderate
213.4Moderate
223.4Moderate
233.4Moderate
243.4Moderate
253.4Moderate
263.4Moderate
273.4Moderate
283.4Moderate
293.4Moderate
303.4Moderate
313.4Moderate
Planning a trip in December

Hazard calendar for Acayucan

In seasonPeak

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

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

Acayucan's monsoon runs June–October, 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 Acayucan?

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

6.8
Sightseeing
2nd-best month of the year
6.8
Beach & pool
5th-best month of the year

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

What to pack for Acayucan in December

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

In December, Acayucan sees daytime highs around 27°C and nights near 19°C. Worth packing: light clothes and rain gear. About 8 days see rain.

light clothesrain gear

Sea temperature near Acayucan 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 at the nearest coast (about 56 km away) 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
Feb24Refreshing
Mar25Warm
Apr26Warm
May28Warm
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov27Warm
Dec25Warm

UV index in Acayucan 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 Acayucan peaks around August 17 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 17UV 12Dec 21UV 7
UV index (midday)Level
Jan7Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May10Very high
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Acayucan 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 Acayucan is worst in May — around 41 µg/m³ PM2.5 (poor), about 3.0× the cleanest month (January, 14 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1739 µg/m³Jan 1814 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb15Moderate
Mar18Moderate
Apr27Moderate
May41Poor
Jun30Moderate
Jul34Moderate
Aug26Moderate
Sep23Moderate
Oct16Moderate
Nov15Moderate
Dec15Moderate
Location & terrain

Where is Acayucan?

Acayucan sits at 17.9°N, 94.9°W, 102 m above sea level, in Mexico. The nearest listed city is Jáltipan de Morelos, 21 km away.

Topography around Acayucan

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

Within 3 km, the terrain around Acayucan has only modest variations in elevation — a maximum elevation change of 59 m around an average of 77 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 183 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,658 m.

The land around Acayucan is covered by trees (35%), grassland (35%) and artificial surfaces (30%) within 3 km, grassland (59%) and trees (36%) within 16 km, and grassland (51%) and trees (30%) within 80 km.

3 km
59 m
16 km
183 m
80 km
1,658 m
treesgrasslandcroplandartificial surfaceswaterwetland
December weather nearby: Jáltipan de Morelos 21 km · Cosoleacaque 30 km · Minatitlán 38 km · Fraccionamiento Ciudad Olmeca 44 km · Coatzacoalcos 54 km · Nanchital de Lázaro Cárdenas del Río 55 km · Catemaco 57 km · Allende 59 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 Acayucan (17.9498°, -94.9139°, elevation 102 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).