Calpulalpan weather in May

In May, Calpulalpan sees average daytime highs of 23°C and overnight lows near 10°C, with 82 mm of rain across 14.4 wet days and about 12.9 hours of daylight. It is the 2nd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 30% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 42 min at the start of May to 13 h 06 min by month's end. Set against the rest of the year, May is Calpulalpan's 7th-clearest and 12th-windiest month. For the whole year in context, see Calpulalpan's year-round climate.

Daytime high
23°
2nd warmest
Overnight low
10°
8th coldest
Rainfall
82 mm
14.4 wet days
Daylight
12 h 54 min
6:03 AM – 6:58 PM
Cloud cover
53%
7th clearest
Wind
6 km/h
12th windiest
Solar energy
6.75 kWh/m²
Travel score
6.4
out of 10

Calpulalpan is municipal seat of Calpulalpan, State of Tlaxcala, Mexico.

Density
3,333/km²
people per km²
Founded
1608

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

Temperature in May

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 23°C through the month.

A typical May day in Calpulalpan reaches about 23°C in the afternoon and slips back to 10°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 27°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

10°15°20°25°30°151015202531
Avg high (°C)Avg low (°C)
12410
22410
32410
42410
52410
62410
72310
82310
92310
102310
112310
122310
132310
142310
152310
162310
172310
182310
192310
202310
212310
222310
232310
242310
252311
262311
272311
282311
292311
302311
312311

Calpulalpan weather by month

How May compares with the rest of the year at a glance. May is the 2nd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 184.110.97.4
Feb21° / 184.511.37.8
Mar23° / 367.911.97.5
Apr24° / 6612.712.46.7
May23° / 10°8214.412.96.4
Jun22° / 11°12616.313.25.6
Jul22° / 11°10317.413.15.3
Aug22° / 11°10717.712.75.3
Sep21° / 11°12617.812.15.1
Oct21° / 6510.411.56.3
Nov21° / 265.111.17.4
Dec20° / 122.510.87.8

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 30% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 30% of May, with mostly cloudy or overcast conditions the remaining 40%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16337
26238
36238
46139
56040
65941
76040
85941
95941
105941
115842
125941
135941
146040
156139
166238
176238
186238
196337
206238
216238
226238
236238
246139
256040
265941
275842
285644
295545
305446
315248

Chance of precipitation in May

Any precipitation

Calpulalpan gets around 82 mm of rain over 14.4 wet days in May. 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 52% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
150
250
350
451
551
652
752
852
952
1051
1151
1251
1350
1449
1548
1647
1746
1845
1944
2043
2142
2242
2341
2440
2540
2640
2740
2840
2940
3041
3141

Humidity in May

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, May lands in the dry band about 100% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
11000
21000
31000
41000
51000
61000
71000
81000
91000
101000
111000
121000
131000
141000
151000
161000
171000
181000
191000
201000
211000
221000
231000
241000
251000
261000
271000
28991
29991
30991
31991

Wind in May

Winds average 6 km/h in May, the calmest month.

Across May, 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
17calm
27calm
37calm
47calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 42 min at the start of May to 13 h 06 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 24 minutes over May. Sunrise moves from 6:10 AM to 5:59 AM, and sunset from 6:53 PM to 7:04 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:106:53
212.76:106:53
312.76:096:53
412.86:096:54
512.86:086:54
612.86:076:54
712.86:076:55
812.86:066:55
912.86:066:56
1012.86:056:56
1112.96:056:56
1212.96:046:57
1312.96:046:57
1412.96:046:57
1512.96:036:58
1612.96:036:58
1712.96:026:59
1812.96:026:59
1913.06:026:59
2013.06:017:00
2113.06:017:00
2213.06:017:01
2313.06:017:01
2413.06:007:01
2513.06:007:02
2613.06:007:02
2713.06:007:03
2813.16:007:03
2913.15:597:03
3013.15:597:04
3113.15:597:04

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.75 kWh/m².

For context, solar energy here swings from a low near 5.01 kWh/m² to a high of 6.94 kWh/m² in April across the year — May's 6.75 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
16.9Intense
26.8Intense
36.8Intense
46.8Intense
56.8Intense
66.8Intense
76.8Intense
86.8Intense
96.8Intense
106.8Intense
116.7Intense
126.7Intense
136.7Intense
146.7Intense
156.7Intense
166.7Intense
176.7Intense
186.7Intense
196.7Intense
206.7Intense
216.7Intense
226.7Intense
236.7Intense
246.7Intense
256.7Intense
266.7Intense
276.6Intense
286.6Intense
296.6Intense
306.6Intense
316.5Intense
Planning a trip in May

Hazard calendar for Calpulalpan

In seasonPeak

In May, Calpulalpan sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Calpulalpan's rainy season runs April–October, when most of the year's rain falls.

Rainy season
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is May a good time to visit Calpulalpan?

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

6.4
Sightseeing
7th-best month of the year
5.1
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Calpulalpan for sightseeing.

What to pack for Calpulalpan in May

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

In May, Calpulalpan sees daytime highs around 23°C and nights near 10°C. Pack rain gear and sun protection. Worth having: light clothes. About 14 days see rain.

rain gearsun protectionlight clothes

UV index in Calpulalpan in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Calpulalpan peaks around April 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highExtremeVery highApr 12UV 14Dec 16UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr15Extreme
May11Extreme
Jun15Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Calpulalpan in May

GoodModeratePoorUnhealthyVery unhealthy

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

Air quality in Calpulalpan is worst in December — around 165 µg/m³ PM2.5 (very unhealthy), and holds fairly steady the rest of the year.

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyDec 13163 µg/m³Aug 15114 µg/m³
PM2.5 (µg/m³)Level
Jan137Unhealthy
Feb131Unhealthy
Mar122Unhealthy
Apr120Unhealthy
May143Unhealthy
Jun121Unhealthy
Jul118Unhealthy
Aug113Unhealthy
Sep120Unhealthy
Oct121Unhealthy
Nov155Very unhealthy
Dec165Very unhealthy
Location & terrain

Where is Calpulalpan?

Calpulalpan sits at 19.6°N, 98.6°W, 2,592 m above sea level, in Mexico. The nearest listed city is Apan, 18 km away.

Topography around Calpulalpan

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

Within 3 km, the terrain around Calpulalpan has only modest variations in elevation — a maximum elevation change of 189 m around an average of 2,581 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,119 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,991 m.

The land around Calpulalpan is covered by cropland (71%) within 3 km, cropland (54%) and trees (21%) within 16 km, and cropland (32%) and trees (30%) within 80 km.

3 km
189 m
16 km
1,119 m
80 km
3,991 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Apan 18 km · Ciudad Sahagun 21 km · Tepeapulco 22 km · Teotihuacan 32 km · Teotihuacán de Arista 32 km · Tulantongo 33 km · Texcoco de Mora 34 km · Chiconcuac 35 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 Calpulalpan (19.5887°, -98.5697°, elevation 2,592 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).