San Juan del Río weather in May

In May, San Juan del Río sees average daytime highs of 29°C and overnight lows near 14°C, with 38 mm of rain across 8 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 29°C through the month. The sky is clear or mostly clear about 46% 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 San Juan del Río's 7th-clearest and 7th-windiest month. For the whole year in context, see San Juan del Río's year-round climate.

Daytime high
29°
1st warmest
Overnight low
14°
9th coldest
Rainfall
38 mm
8 wet days
Daylight
13 hours
6:07 AM – 7:05 PM
Cloud cover
46%
7th clearest
Wind
9 km/h
7th windiest
Solar energy
7.17 kWh/m²
Travel score
5.9
out of 10

San Juan del Río is municipal seat of San Juan del Río, State of Querétaro, Mexico.

Density
173/km²
people per km²
Founded
1531

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 29°C through the month.

A typical May day in San Juan del Río reaches about 29°C in the afternoon and slips back to 14°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 33°C. Set against its neighbours, May runs on par with April and about 2°C warmer than June.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12914
22914
32914
42914
52914
62914
72914
82914
92914
102914
112914
122914
132914
142914
152914
162914
172914
182914
192915
202915
212915
222915
232915
242915
252915
262915
272915
282915
292915
302915
312915

San Juan del Río 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
Jan22° / 132.710.98.1
Feb25° / 142.511.38.4
Mar27° / 10°13311.97.9
Apr29° / 13°214.512.56.4
May29° / 14°388135.9
Jun27° / 15°9012.413.26.0
Jul26° / 15°9313.713.16.1
Aug26° / 15°8212.112.76.2
Sep25° / 14°9813.312.16.2
Oct24° / 12°43711.57.5
Nov24° / 10°163.1118.4
Dec23° / 51.310.88.5

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 46% 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 27%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17129
27129
37030
47129
57129
67129
77228
87228
97228
107327
117327
127327
137327
147426
157525
167525
177525
187525
197525
207525
217525
227525
237426
247426
257327
267327
277327
287129
297129
307030
316931

Chance of precipitation in May

Any precipitation

San Juan del Río gets around 38 mm of rain over 8 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 26% and peaks near 28% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
119
220
321
422
523
624
725
826
927
1027
1128
1228
1328
1428
1528
1628
1727
1827
1927
2027
2126
2226
2326
2425
2525
2625
2726
2826
2927
3028
3128

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 88% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)
1964
2964
3964
4955
5946
6946
7937
8928
9928
10919
11919
129010
139010
148911
158911
168812
178812
188812
198713
208713
218614
228614
238515
248416
258317
268218
278119
288020
297921
307723
317525

Wind in May

Winds average 9 km/h in May.

Across May, daily wind ranges from about 9 km/h on the calmest days to 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
19calm
29calm
39calm
49calm
59calm
69calm
79calm
89calm
99calm
109calm
119calm
129calm
139calm
149calm
159calm
169calm
179calm
189calm
199calm
209calm
219calm
229calm
239calm
249calm
259calm
269calm
279calm
289calm
299calm
309calm
319calm

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 6:03 AM, and sunset from 6:59 PM to 7:11 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.76:156:59
212.86:147:00
312.86:147:00
412.86:137:00
512.86:137:01
612.86:127:01
712.86:127:02
812.86:117:02
912.96:107:02
1012.96:107:03
1112.96:097:03
1212.96:097:04
1312.96:097:04
1412.96:087:04
1513.06:087:05
1613.06:077:05
1713.06:077:06
1813.06:077:06
1913.06:067:06
2013.06:067:07
2113.06:067:07
2213.06:057:08
2313.16:057:08
2413.16:057:09
2513.16:047:09
2613.16:047:09
2713.16:047:10
2813.16:047:10
2913.16:047:11
3013.16:037:11
3113.16:037:11

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.17 kWh/m².

For context, solar energy here swings from a low near 4.76 kWh/m² to a high of 7.28 kWh/m² in April across the year — May's 7.17 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.3Intense
27.3Intense
37.3Intense
47.3Intense
57.2Intense
67.2Intense
77.2Intense
87.2Intense
97.2Intense
107.2Intense
117.2Intense
127.2Intense
137.2Intense
147.2Intense
157.2Intense
167.2Intense
177.2Intense
187.2Intense
197.2Intense
207.2Intense
217.2Intense
227.1Intense
237.1Intense
247.1Intense
257.1Intense
267.1Intense
277.1Intense
287.0Intense
297.0Intense
307.0Intense
317.0Intense
Planning a trip in May

Hazard calendar for San Juan del Río

In seasonPeak

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

San Juan del Río'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 San Juan del Río?

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

5.9
Sightseeing
12th-best month of the year
7.6
Beach & pool
3rd-best month of the year

May is a reasonable time to visit San Juan del Río for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for San Juan del Río in May

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

In May, San Juan del Río sees daytime highs around 29°C and nights near 14°C. Pack light clothes and sun protection. Worth having: rain gear. About 8 days see rain.

light clothessun protectionrain gear

UV index in San Juan del Río in May

LowModerateHighVery highExtreme

Clear-sky midday UV in May peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in San Juan del Río peaks around June 13 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 highExtremeVery highJun 13UV 14Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar14Extreme
Apr14Extreme
May13Extreme
Jun14Extreme
Jul12Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in San Juan del Río 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 San Juan del Río is worst in December — around 46 µg/m³ PM2.5 (poor), about 1.6× the cleanest month (October, 29 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecPoorModeratePoorModeratePoorDec 2146 µg/m³Oct 1129 µg/m³
PM2.5 (µg/m³)Level
Jan44Poor
Feb42Poor
Mar38Poor
Apr35Poor
May35Moderate
Jun30Moderate
Jul40Poor
Aug32Moderate
Sep30Moderate
Oct29Moderate
Nov37Poor
Dec46Poor
Location & terrain

Where is San Juan del Río?

San Juan del Río sits at 20.4°N, 100.0°W, 1,923 m above sea level, in Mexico. The nearest listed city is Tequisquiapan, 18 km away.

Topography around San Juan del Río

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Juan del Río.

Within 3 km, the terrain around San Juan del Río has only modest variations in elevation — a maximum elevation change of 226 m around an average of 1,943 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 797 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,942 m.

The land around San Juan del Río is covered by artificial surfaces (54%) within 3 km, shrubs (40%) and cropland (32%) within 16 km, and shrubs (42%) and cropland (23%) within 80 km.

3 km
226 m
16 km
797 m
80 km
2,942 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
May weather nearby: Tequisquiapan 18 km · Venceremos 46 km · Santiago de Querétaro 46 km · San José de los Olvera 47 km · El Pueblito 49 km · Santa Rosa Jáuregui 61 km · Apaseo el Alto 66 km · Atlacomulco de Fabela 67 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 San Juan del Río (20.389°, -99.9964°, elevation 1,923 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).