Purísima de Bustos weather in May

In May, Purísima de Bustos sees average daytime highs of 31°C and overnight lows near 16°C, with 33 mm of rain across 6.1 wet days and about 13 hours of daylight. It is the 1st-warmest and 6th-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 54% of the time in May, and the air most often feels dry.

Daylight stretches from about 12 h 48 min at the start of May to 13 h 12 min by month's end. Set against the rest of the year, May is Purísima de Bustos's 6th-clearest and 3rd-windiest month. For the whole year in context, see Purísima de Bustos's year-round climate.

Daytime high
31°
1st warmest
Overnight low
16°
11th coldest
Rainfall
33 mm
6.1 wet days
Daylight
13 hours
6:14 AM – 7:14 PM
Cloud cover
41%
6th clearest
Wind
9 km/h
3rd windiest
Solar energy
7.52 kWh/m²
Travel score
5.4
out of 10

Purísima de Bustos is municipal seat of Purísima, State of Guanajuato, 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 31°C through the month.

A typical May day in Purísima de Bustos reaches about 31°C in the afternoon and slips back to 16°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 27°C and 34°C. Set against its neighbours, May runs about 1°C warmer than April and about 2°C warmer than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13015
23015
33015
43015
53015
63015
73015
83015
93015
103015
113015
123015
133116
143116
153116
163116
173116
183116
193116
203116
213116
223116
233116
243116
253116
263116
273116
283116
293016
303016
313016

Purísima de Bustos weather by month

How May compares with the rest of the year at a glance. May is the 1st-warmest and 6th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 172.610.98.3
Feb25° / 132.311.38.5
Mar27° / 11°111.811.98.0
Apr30° / 14°81.812.56.4
May31° / 16°336.1135.4
Jun28° / 16°12314.413.35.1
Jul26° / 15°14919.313.15.3
Aug26° / 15°12517.712.75.5
Sep26° / 15°11315.312.15.8
Oct26° / 13°447.211.57.3
Nov25° / 10°143118.5
Dec23° / 71.510.78.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 54% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 20% of May, with mostly cloudy or overcast conditions the remaining 26%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27129
37129
47129
57129
67228
77228
87129
97228
107228
117327
127426
137426
147426
157525
167525
177624
187723
197723
207723
217723
227723
237723
247723
257624
267624
277624
287525
297525
307327
317327

Chance of precipitation in May

Any precipitation

Purísima de Bustos gets around 33 mm of rain over 6.1 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 19% and peaks near 27% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
110
211
312
413
514
615
716
817
917
1018
1118
1218
1318
1419
1519
1619
1719
1819
1920
2020
2120
2221
2321
2422
2522
2623
2724
2824
2925
3026
3127

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 92% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
19910
29910
39910
49820
59820
69730
79730
89640
99640
109550
119550
129550
139550
149460
159460
169370
179370
189370
199280
209280
219190
2290100
2389101
2488111
2587121
2686131
2785141
2883152
2982162
3080173
3179183

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 8 km/h on the calmest days to 10 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
308calm
318calm

Sunrise & sunset in May

DaylightNight

Daylight runs from about 12 h 48 min at the start of May to 13 h 12 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 6:22 AM to 6:10 AM, and sunset from 7:08 PM to 7:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:227:08
212.86:217:08
312.86:217:08
412.86:207:09
512.86:197:09
612.86:197:10
712.96:187:10
812.96:187:10
912.96:177:11
1012.96:177:11
1112.96:167:12
1212.96:167:12
1313.06:157:12
1413.06:157:13
1513.06:147:13
1613.06:147:14
1713.06:137:14
1813.06:137:15
1913.06:137:15
2013.16:127:15
2113.16:127:16
2213.16:127:16
2313.16:117:17
2413.16:117:17
2513.16:117:18
2613.16:117:18
2713.16:107:18
2813.16:107:19
2913.26:107:19
3013.26:107:20
3113.26:107:20

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.52 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 7.61 kWh/m² in April across the year — May's 7.52 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.7Intense
27.7Intense
37.6Intense
47.6Intense
57.6Intense
67.6Intense
77.6Intense
87.6Intense
97.6Intense
107.6Intense
117.6Intense
127.5Intense
137.5Intense
147.5Intense
157.5Intense
167.5Intense
177.5Intense
187.5Intense
197.5Intense
207.5Intense
217.5Intense
227.5Intense
237.5Intense
247.4Intense
257.4Intense
267.4Intense
277.4Intense
287.3Intense
297.3Intense
307.3Intense
317.2Intense
Planning a trip in May

Hazard calendar for Purísima de Bustos

In seasonPeak

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

Purísima de Bustos'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 May a good time to visit Purísima de Bustos?

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

5.4
Sightseeing
10th-best month of the year
7.7
Beach & pool
3rd-best month of the year

May is a reasonable time to visit Purísima de Bustos for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Purísima de Bustos in May

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

In May, Purísima de Bustos sees daytime highs around 31°C and nights near 16°C. Pack light clothes and sun protection. About 6 days see rain.

light clothessun protection

UV index in Purísima de Bustos in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 14 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Purísima de Bustos peaks around April 23 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highApr 23UV 14Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Purísima de Bustos 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 Purísima de Bustos is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1420 µg/m³Oct 1814 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar16Moderate
Apr17Moderate
May21Moderate
Jun15Moderate
Jul16Moderate
Aug15Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec20Moderate
Location & terrain

Where is Purísima de Bustos?

Purísima de Bustos sits at 21.0°N, 101.9°W, 1,779 m above sea level, in Mexico. The nearest listed city is San Francisco del Rincón, 2.0 km away.

Topography around Purísima de Bustos

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

Within 3 km, the terrain around Purísima de Bustos has significant variations in elevation — a maximum elevation change of 414 m around an average of 1,796 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 471 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,399 m.

The land around Purísima de Bustos is covered by artificial surfaces (42%) and shrubs (21%) within 3 km, shrubs (35%) and cropland (35%) within 16 km, and shrubs (34%) and cropland (33%) within 80 km.

3 km
414 m
16 km
471 m
80 km
1,399 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: San Francisco del Rincón 2.0 km · Centro Familiar la Soledad 18 km · La Ermita 20 km · León de los Aldama 23 km · Medina 30 km · Lagos de Moreno 37 km · Romita 41 km · Silao de la Victoria 48 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 Purísima de Bustos (21.0297°, -101.8778°, elevation 1,779 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).