Santiago Tlacotepec weather in May

In May, Santiago Tlacotepec sees average daytime highs of 22°C and overnight lows near 9°C, with 113 mm of rain across 16.2 wet days and about 12.9 hours of daylight. It is the 1st-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 23% 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 Santiago Tlacotepec's 7th-clearest and 6th-windiest month. For the whole year in context, see Santiago Tlacotepec's year-round climate.

Daytime high
22°
1st warmest
Overnight low
8th coldest
Rainfall
113 mm
16.2 wet days
Daylight
12 h 54 min
6:08 AM – 7:02 PM
Cloud cover
58%
7th clearest
Wind
6 km/h
6th windiest
Solar energy
6.81 kWh/m²
Travel score
5.8
out of 10

Santiago Tlacotepec is town in Toluca municipality, State of Mexico, Mexico.

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 22°C through the month.

A typical May day in Santiago Tlacotepec reaches about 22°C in the afternoon and slips back to 9°C overnight — a 13°C spread between the day's warmth and the night's chill. On most days the high lands between 19°C and 25°C. Set against its neighbours, May runs on par with April and about 1°C warmer than June.

10°15°20°25°151015202531
Avg high (°C)Avg low (°C)
1228
2228
3228
4228
5228
6228
7228
8229
9229
10229
11229
12229
13229
14229
15229
16229
17229
18229
19229
20229
21229
22229
23229
24229
25229
26229
27229
28229
29229
30229
31229

Santiago Tlacotepec weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan17° / 274.9116.5
Feb19° / 255.111.37.2
Mar20° / 296.611.97.3
Apr22° / 478.512.47.0
May22° / 11316.212.95.8
Jun21° / 20421.613.14.5
Jul19° / 25727.1133.7
Aug19° / 24226.312.73.7
Sep19° / 2042312.14.1
Oct19° / 9514.211.65.4
Nov19° / 356.411.16.7
Dec18° / 153.110.96.9

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 23% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 27% of May, with mostly cloudy or overcast conditions the remaining 50%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
15842
25842
35644
45644
55545
65545
75446
85347
95347
105248
115248
125149
135248
145248
155149
165248
175248
185149
195149
205050
214951
224951
234852
244852
254753
264555
274555
284456
294258
304258
314159

Chance of precipitation in May

Any precipitation

Santiago Tlacotepec gets around 113 mm of rain over 16.2 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 52% and peaks near 58% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%151015202531
Rain chance (%)
142
243
345
446
548
649
751
852
952
1053
1153
1253
1353
1453
1553
1652
1752
1852
1952
2052
2152
2252
2352
2452
2553
2653
2754
2855
2956
3057
3158

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 (%)
1100
2100
3100
4100
5100
6100
7100
8100
9100
10100
11100
12100
13100
14100
15100
16100
17100
18100
19100
20100
21100
22100
23100
24100
25100
26100
27100
28100
29100
30100
31100

Wind in May

Winds average 6 km/h in May.

Across May, daily wind ranges from about 5 km/h on the calmest days to 6 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
106calm
116calm
126calm
136calm
146calm
156calm
166calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

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 6:15 AM to 6:04 AM, and sunset from 6:57 PM to 7:08 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:156:57
212.76:156:57
312.76:146:57
412.76:136:58
512.86:136:58
612.86:126:58
712.86:126:59
812.86:116:59
912.86:116:59
1012.86:107:00
1112.86:107:00
1212.96:097:01
1312.96:097:01
1412.96:097:01
1512.96:087:02
1612.96:087:02
1712.96:077:02
1812.96:077:03
1912.96:077:03
2013.06:067:04
2113.06:067:04
2213.06:067:04
2313.06:067:05
2413.06:057:05
2513.06:057:06
2613.06:057:06
2713.06:057:06
2813.06:057:07
2913.06:047:07
3013.16:047:08
3113.16:047:08

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 6.81 kWh/m².

For context, solar energy here swings from a low near 4.96 kWh/m² to a high of 7.27 kWh/m² in April across the year — May's 6.81 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.1Intense
37.1Intense
47.1Intense
57.0Intense
67.0Intense
77.0Intense
87.0Intense
96.9Intense
106.9Intense
116.9Intense
126.9Intense
136.9Intense
146.8Intense
156.8Intense
166.8Intense
176.8Intense
186.8Intense
196.8Intense
206.8Intense
216.7Intense
226.7Intense
236.7Intense
246.6Intense
256.6Intense
266.6Intense
276.5Intense
286.5Intense
296.5Intense
306.4Intense
316.4Intense
Planning a trip in May

Hazard calendar for Santiago Tlacotepec

In seasonPeak

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

Santiago Tlacotepec's monsoon runs June–September, when most of the year's rain falls.

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

Is May a good time to visit Santiago Tlacotepec?

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

5.8
Sightseeing
7th-best month of the year
3.9
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Santiago Tlacotepec for sightseeing.

What to pack for Santiago Tlacotepec in May

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

In May, Santiago Tlacotepec sees daytime highs around 22°C and nights near 9°C. Pack rain gear and sun protection. About 16 days see rain.

rain gearsun protection

UV index in Santiago Tlacotepec in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Santiago Tlacotepec peaks around March 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highMar 23UV 14Dec 14UV 8
UV index (midday)Level
Jan10Very high
Feb12Extreme
Mar15Extreme
Apr14Extreme
May12Extreme
Jun15Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Santiago Tlacotepec 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 Santiago Tlacotepec is worst in December — around 79 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyDec 1078 µg/m³Apr 1353 µg/m³
PM2.5 (µg/m³)Level
Jan67Unhealthy
Feb62Unhealthy
Mar55Poor
Apr52Poor
May57Unhealthy
Jun59Unhealthy
Jul69Unhealthy
Aug65Unhealthy
Sep70Unhealthy
Oct66Unhealthy
Nov77Unhealthy
Dec79Unhealthy
Location & terrain

Where is Santiago Tlacotepec?

Santiago Tlacotepec sits at 19.2°N, 99.7°W, 2,833 m above sea level, in Mexico. The nearest listed city is San Jorge Pueblo Nuevo, 5.0 km away.

Topography around Santiago Tlacotepec

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

Within 3 km, the terrain around Santiago Tlacotepec has significant variations in elevation — a maximum elevation change of 288 m around an average of 2,792 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,023 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,957 m.

The land around Santiago Tlacotepec is covered by cropland (60%) and artificial surfaces (26%) within 3 km, cropland (36%) and artificial surfaces (28%) within 16 km, and trees (46%) within 80 km.

3 km
288 m
16 km
2,023 m
80 km
3,957 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: San Jorge Pueblo Nuevo 5.0 km · Toluca 7.0 km · San Francisco Cuaxusco 7.0 km · Metepec 8.0 km · San Salvador Tizatlalli 9.0 km · Zinacantepec 9.0 km · San Jerónimo 10 km · San Antonio Acahualco 12 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 Santiago Tlacotepec (19.2271°, -99.6708°, elevation 2,833 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).