Mapastepec weather in December

In December, Mapastepec sees average daytime highs of 31°C and overnight lows near 21°C, with 9 mm of rain across 2.2 wet days and about 11.1 hours of daylight. It is the 6th-warmest and 9th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 80% of the time in December, and the air most often feels muggy.

Daylight stretches from about 11 h 06 min at the start of December to 11 h 06 min by month's end. Set against the rest of the year, December is Mapastepec's 3rd-clearest and 3rd-windiest month. For the whole year in context, see Mapastepec's year-round climate.

Daytime high
31°
6th warmest
Overnight low
21°
3rd coldest
Rainfall
9 mm
2.2 wet days
Daylight
11 h 06 min
6:35 AM – 5:40 PM
Cloud cover
22%
3rd clearest
Wind
7 km/h
3rd windiest
Solar energy
5.18 kWh/m²
Travel score
6.1
out of 10

Mapastepec is municipal seat of Mapastepec, State of Chiapas, Mexico.

Founded
1486

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 31°C through the month.

A typical December day in Mapastepec reaches about 31°C in the afternoon and slips back to 21°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, December runs on par with November and on par with January.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13021
23021
33021
43021
53021
63021
73121
83121
93121
103121
113121
123121
133121
143121
153121
163121
173121
183121
193121
203121
213121
223121
233121
243121
253121
263121
273121
283121
293121
303121
313121

How December really feels in Mapastepec

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.

Mapastepec weather by month

How December compares with the rest of the year at a glance. December is the 6th-warmest and 9th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan31° / 21°30.911.26.0
Feb32° / 21°30.911.55.6
Mar32° / 22°72.311.95.1
Apr32° / 23°337.212.34.4
May31° / 23°1792012.73.5
Jun30° / 23°33825.812.93.0
Jul30° / 23°31428.112.82.8
Aug30° / 23°35428.412.52.9
Sep29° / 23°44927.412.13.0
Oct30° / 22°29924.911.63.4
Nov30° / 22°9011.411.35.0
Dec31° / 21°92.211.16.1

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 80% 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 11%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18812
28911
38911
49010
59010
69010
7919
8919
9919
10919
11919
12919
139010
149010
159010
168911
178911
188911
198911
208911
218812
228812
238812
248812
258911
268911
278911
288911
298911
308911
318911

Chance of precipitation in December

Any precipitation

Mapastepec gets around 9 mm of rain over 2.2 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 7% and peaks near 14% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%151015202531
Rain chance (%)
114
213
312
411
511
610
710
810
99
109
118
128
138
147
157
167
176
186
196
205
215
225
235
244
254
264
274
284
294
303
313

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 49% of days. Sticky, muggy-or-worse air turns up on roughly 59% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
116234327
216234425
316244524
417244622
527244721
627254819
727254918
827254917
928255015
1028255114
1128255213
1228265212
1328265311
1428275310
1528275310
162828539
172929528
182930518
192931517
202932516
212933506
223934505
233935494
243936494
253936493
2631037483
2731037482
2831038472
2931138462
3031238452
3131239451

Wind in December

Winds average 7 km/h in December.

Across December, daily wind ranges from about 6 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in December

DaylightNight

Daylight runs from about 11 h 06 min at the start of December to 11 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 0 minutes over December. Sunrise moves from 6:27 AM to 6:42 AM, and sunset from 5:36 PM to 5:48 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.16:275:36
211.16:275:36
311.16:285:36
411.16:295:36
511.16:295:37
611.16:305:37
711.16:305:37
811.16:315:38
911.16:315:38
1011.16:325:38
1111.16:325:39
1211.16:335:39
1311.16:345:39
1411.16:345:40
1511.16:355:40
1611.16:355:40
1711.16:365:41
1811.16:365:41
1911.16:375:42
2011.16:375:42
2111.16:385:43
2211.16:385:43
2311.16:395:44
2411.16:395:44
2511.16:395:45
2611.16:405:45
2711.16:405:46
2811.16:415:46
2911.16:415:47
3011.16:425:47
3111.16:425:48

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.18 kWh/m².

For context, solar energy here swings from a low near 5.03 kWh/m² to a high of 6.82 kWh/m² in April across the year — December's 5.18 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.2Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
315.3Bright
Planning a trip in December

Hazard calendar for Mapastepec

In seasonPeak

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

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

Mapastepec'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 Mapastepec?

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

6.1
Sightseeing
1st-best month of the year
8.6
Beach & pool
3rd-best month of the year

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

What to pack for Mapastepec in December

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

In December, Mapastepec sees daytime highs around 31°C and nights near 21°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

Sea temperature near Mapastepec in December

The nearest coast averages about 29°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 25 km away) is warmest in August at about 31°C and coldest in February near 28°C.

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

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan29Tropical
Feb28Tropical
Mar29Tropical
Apr30Tropical
May30Tropical
Jun30Tropical
Jul30Tropical
Aug31Tropical
Sep30Tropical
Oct30Tropical
Nov30Tropical
Dec29Tropical

UV index in Mapastepec in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Mapastepec peaks around April 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 9 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 11UV 14Dec 20UV 9
UV index (midday)Level
Jan9Very high
Feb13Extreme
Mar13Extreme
Apr14Extreme
May12Extreme
Jun13Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec9Very high

Air quality in Mapastepec 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 Mapastepec is worst in May — around 36 µg/m³ PM2.5 (poor), about 3.6× the cleanest month (January, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1335 µg/m³Jan 110 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar16Moderate
Apr30Moderate
May36Poor
Jun20Moderate
Jul22Moderate
Aug19Moderate
Sep18Moderate
Oct15Moderate
Nov12Good
Dec10Good
Location & terrain

Where is Mapastepec?

Mapastepec sits at 15.4°N, 92.9°W, 44 m above sea level, in Mexico. The nearest listed city is Pijijiapan, 43 km away.

Topography around Mapastepec

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

Within 3 km, the terrain around Mapastepec has only modest variations in elevation — a maximum elevation change of 73 m around an average of 40 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,919 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,181 m.

The land around Mapastepec is covered by grassland (69%) within 3 km, trees (49%) and grassland (48%) within 16 km, and trees (49%) and water (26%) within 80 km.

3 km
73 m
16 km
1,919 m
80 km
3,181 m
treesshrubsgrasslandcroplandartificial surfaceswaterwetlandmangroves
December weather nearby: Pijijiapan 43 km · Huixtla 57 km · Motozintla 70 km · Comalapa 85 km · Tapachula 90 km · Cacahoatán 93 km · Villaflores 97 km · Venustiano Carranza 107 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 Mapastepec (15.4336°, -92.9004°, elevation 44 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).