San Juan de los Lagos weather in May

In May, San Juan de los Lagos sees average daytime highs of 31°C and overnight lows near 17°C, with 24 mm of rain across 5.1 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 60% 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 San Juan de los Lagos's 4th-clearest and 3rd-windiest month. For the whole year in context, see San Juan de los Lagos's year-round climate.

Daytime high
31°
1st warmest
Overnight low
17°
11th coldest
Rainfall
24 mm
5.1 wet days
Daylight
13 hours
6:15 AM – 7:16 PM
Cloud cover
37%
4th clearest
Wind
11 km/h
3rd windiest
Solar energy
7.7 kWh/m²
Travel score
5.1
out of 10

San Juan de los Lagos is municipal seat of San Juan, State of Jalisco, Mexico.

Density
56/km²
people per km²
Founded
1542

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 San Juan de los Lagos reaches about 31°C in the afternoon and slips back to 17°C overnight — a 15°C spread between the day's warmth and the night's chill. On most days the high lands between 28°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)
13115
23115
33116
43116
53116
63116
73116
83116
93116
103116
113116
123116
133116
143116
153116
163117
173217
183217
193217
203217
213217
223217
233217
243217
253217
263217
273217
283217
293217
303218
313218

San Juan de los Lagos 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° / 16210.98.5
Feb25° / 10°101.611.38.6
Mar28° / 12°71.111.87.9
Apr30° / 14°50.912.56.2
May31° / 17°245.1135.1
Jun30° / 17°11513.813.34.8
Jul27° / 16°15319.813.25.2
Aug27° / 16°13718.212.75.4
Sep26° / 15°11115.212.15.7
Oct27° / 14°406.711.57.3
Nov25° / 11°102.2118.5
Dec24° / 71.110.78.7

Cloud cover in May

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 60% of the time in May.

Beyond those clear spells, partly cloudy skies cover about 18% of May, with mostly cloudy or overcast conditions the remaining 22%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17228
27228
37327
47327
57327
67426
77525
87525
97525
107624
117723
127822
137822
147921
158020
168020
178119
188218
198218
208218
218218
228218
238218
248218
258119
268119
278020
287921
297822
307822
317723

Chance of precipitation in May

Any precipitation

San Juan de los Lagos gets around 24 mm of rain over 5.1 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 16% and peaks near 25% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
17
28
39
410
510
611
712
813
914
1014
1114
1214
1315
1415
1515
1615
1716
1816
1916
2017
2117
2218
2318
2419
2520
2620
2721
2822
2923
3024
3125

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 94% 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
49910
59910
69820
79820
89820
99730
109730
119730
129730
139730
149640
159640
169640
179640
189550
199550
209550
219361
229271
239271
249181
259091
2688102
2787112
2886122
2984133
3083143
3180164

Wind in May

Winds average 11 km/h in May.

Across May, daily wind ranges from about 10 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm
3110calm

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 6:23 AM to 6:11 AM, and sunset from 7:10 PM to 7:22 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:237:10
212.86:237:10
312.86:227:10
412.86:227:11
512.86:217:11
612.96:207:12
712.96:207:12
812.96:197:12
912.96:197:13
1012.96:187:13
1112.96:187:14
1213.06:177:14
1313.06:177:15
1413.06:167:15
1513.06:167:15
1613.06:157:16
1713.06:157:16
1813.06:147:17
1913.16:147:17
2013.16:147:18
2113.16:137:18
2213.16:137:18
2313.16:137:19
2413.16:137:19
2513.16:127:20
2613.16:127:20
2713.16:127:21
2813.26:127:21
2913.26:117:21
3013.26:117:22
3113.26:117:22

Solar energy in May

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in May, about 7.7 kWh/m² — the sunniest month for solar.

For context, solar energy here swings from a low near 4.81 kWh/m² to a high of 7.7 kWh/m² in May across the year — May's 7.7 kWh/m² sits near the top of that range.

02468151015202531
Solar energy (kWh/m²)Level
17.8Intense
27.8Intense
37.8Intense
47.8Intense
57.8Intense
67.8Intense
77.8Intense
87.7Intense
97.7Intense
107.7Intense
117.7Intense
127.7Intense
137.7Intense
147.7Intense
157.7Intense
167.7Intense
177.7Intense
187.7Intense
197.7Intense
207.7Intense
217.7Intense
227.7Intense
237.7Intense
247.6Intense
257.6Intense
267.6Intense
277.5Intense
287.5Intense
297.5Intense
307.5Intense
317.4Intense
Planning a trip in May

Hazard calendar for San Juan de los Lagos

In seasonPeak

None of San Juan de los Lagos'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 de los Lagos'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 de los Lagos?

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

5.1
Sightseeing
11th-best month of the year
7.7
Beach & pool
5th-best month of the year

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

What to pack for San Juan de los Lagos in May

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

In May, San Juan de los Lagos sees daytime highs around 31°C and nights near 17°C. Pack light clothes and sun protection. About 5 days see rain.

light clothessun protection

UV index in San Juan de los Lagos 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 San Juan de los Lagos peaks around May 14 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 highMay 14UV 14Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in San Juan de los Lagos 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 de los Lagos 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 San Juan de los Lagos?

San Juan de los Lagos sits at 21.2°N, 102.3°W, 1,749 m above sea level, in Mexico. The nearest listed city is Jalostotitlán, 16 km away.

Topography around San Juan de los Lagos

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

Within 3 km, the terrain around San Juan de los Lagos has only modest variations in elevation — a maximum elevation change of 175 m around an average of 1,767 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 356 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,615 m.

The land around San Juan de los Lagos is covered by artificial surfaces (31%), shrubs (24%) and cropland (20%) within 3 km, shrubs (40%) and cropland (40%) within 16 km, and shrubs (42%) and cropland (27%) within 80 km.

3 km
175 m
16 km
356 m
80 km
1,615 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
May weather nearby: Jalostotitlán 16 km · San Miguel el Alto 25 km · Encarnación de Díaz 32 km · Teocaltiche 33 km · Lagos de Moreno 43 km · Purísima de Bustos 53 km · Villa Hidalgo 54 km · Nochistlán de Mejía 55 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 de los Lagos (21.2489°, -102.3304°, elevation 1,749 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).