Acatlán de Osorio weather in December

In December, Acatlán de Osorio sees average daytime highs of 27°C and overnight lows near 12°C, with 3 mm of rain across 0.3 wet days and about 10.9 hours of daylight. It is the 11th-warmest and 12th-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 71% of the time in December, and the air most often feels dry.

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 Acatlán de Osorio's 4th-clearest and 3rd-windiest month. For the whole year in context, see Acatlán de Osorio's year-round climate.

Daytime high
27°
11th warmest
Overnight low
12°
2nd coldest
Rainfall
3 mm
0.3 wet days
Daylight
10 h 54 min
7:01 AM – 5:56 PM
Cloud cover
27%
4th clearest
Wind
11 km/h
3rd windiest
Solar energy
5.24 kWh/m²
Travel score
8.4
out of 10

Acatlán de Osorio is municipal seat of Acatlán, State of Puebla, Mexico.

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 Acatlán de Osorio reaches about 27°C in the afternoon and slips back to 12°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 30°C. Set against its neighbours, December runs about 1°C cooler than November and on par with January.

10°20°30°151015202531
Avg high (°C)Avg low (°C)
12813
22813
32812
42812
52812
62812
72812
82812
92812
102812
112812
122812
132812
142812
152712
162712
172712
182712
192712
202712
212712
222712
232712
242712
252712
262712
272712
282712
292712
302712
312712

How December really feels in Acatlán de Osorio

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.

Acatlán de Osorio weather by month

How December compares with the rest of the year at a glance. December is the 11th-warmest and 12th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan27° / 12°40.8118.5
Feb29° / 13°30.611.47.5
Mar31° / 15°4111.96.0
Apr33° / 17°102.412.44.6
May32° / 18°438.212.84.0
Jun30° / 18°14415.913.14.2
Jul30° / 17°10312.1134.7
Aug30° / 17°13514.912.64.3
Sep28° / 17°1681712.14.7
Oct29° / 16°598.611.65.8
Nov29° / 14°91.911.17.1
Dec27° / 12°30.310.98.4

Cloud cover in December

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 71% of the time in December.

Beyond those clear spells, partly cloudy skies cover about 12% of December, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58614
68614
78614
88614
98614
108515
118515
128416
138416
148317
158317
168317
178218
188218
198218
208020
218020
228020
238020
248119
258119
268020
278020
288119
298119
308119
318119

Chance of precipitation in December

Any precipitation

Acatlán de Osorio gets around 3 mm of rain over 0.3 wet days in December, the driest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 1% and peaks near 2% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
11
21
31
41
51
61
70
80
90
100
110
120
130
140
150
161
171
181
191
201
211
222
232
242
252
262
272
282
292
302
312

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 99% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1973
2982
3982
4982
5982
6982
7982
8982
9991
10991
11991
12991
13991
14991
15991
16991
17991
18991
19991
20991
211000
221000
231000
241000
251000
261000
271000
281000
291000
301000
311000

Wind in December

Winds average 11 km/h in December.

Across December, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

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 6:52 AM to 7:08 AM, and sunset from 5:52 PM to 6:03 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.06:525:52
211.06:535:52
311.06:545:52
411.06:545:52
511.06:555:52
611.06:555:53
710.96:565:53
810.96:565:53
910.96:575:53
1010.96:585:54
1110.96:585:54
1210.96:595:54
1310.96:595:55
1410.97:005:55
1510.97:005:55
1610.97:015:56
1710.97:015:56
1810.97:025:57
1910.97:025:57
2010.97:035:57
2110.97:035:58
2210.97:045:58
2310.97:045:59
2410.97:055:59
2510.97:056:00
2610.97:066:00
2710.97:066:01
2810.97:076:01
2910.97:076:02
3010.97:076:02
3110.97:086:03

Solar energy in December

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in December, about 5.24 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 5.24 kWh/m² to a high of 7.39 kWh/m² in April across the year — December's 5.24 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.3Bright
295.3Bright
305.3Bright
315.3Bright
Planning a trip in December

Hazard calendar for Acatlán de Osorio

In seasonPeak

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

Acatlán de Osorio's rainy season runs June–September, 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 Acatlán de Osorio?

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

8.4
Sightseeing
2nd-best month of the year
8.8
Beach & pool
2nd-best month of the year

December is one of the better times to visit Acatlán de Osorio for general sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Acatlán de Osorio in December

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

In December, Acatlán de Osorio sees daytime highs around 27°C and nights near 12°C. Pack light clothes. Worth having: sun protection.

light clothessun protection

UV index in Acatlán de Osorio in December

LowModerateHighVery highExtreme

Clear-sky midday UV in December peaks around 8 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Acatlán de Osorio peaks around April 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highApr 11UV 14Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr14Extreme
May9Very high
Jun13Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Acatlán de Osorio 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 Acatlán de Osorio is worst in May — around 29 µg/m³ PM2.5 (moderate), about 2.2× the cleanest month (February, 13 µg/m³).

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1628 µg/m³Feb 1213 µg/m³
PM2.5 (µg/m³)Level
Jan14Moderate
Feb13Moderate
Mar15Moderate
Apr23Moderate
May29Moderate
Jun21Moderate
Jul19Moderate
Aug18Moderate
Sep21Moderate
Oct21Moderate
Nov18Moderate
Dec16Moderate
Location & terrain

Where is Acatlán de Osorio?

Acatlán de Osorio sits at 18.2°N, 98.0°W, 1,185 m above sea level, in Mexico. The nearest listed city is Ciudad de Huajuapan de León, 52 km away.

Topography around Acatlán de Osorio

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

Within 3 km, the terrain around Acatlán de Osorio has only modest variations in elevation — a maximum elevation change of 237 m around an average of 1,217 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 890 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,306 m.

The land around Acatlán de Osorio is covered by shrubs (55%) within 3 km, shrubs (83%) within 16 km, and shrubs (64%) within 80 km.

3 km
237 m
16 km
890 m
80 km
2,306 m
treesshrubsgrasslandcroplandartificial surfaces
December weather nearby: Ciudad de Huajuapan de León 52 km · Izúcar de Matamoros 62 km · Tehuacán 75 km · Altepexi 81 km · Axochiapan 82 km · Tecamachalco 83 km · Ajalpan 86 km · Zinacatepec 86 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 Acatlán de Osorio (18.2025°, -98.0486°, elevation 1,185 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).