San Juan de los Lagos in Summer
In summer (June, July and August), San Juan de los Lagos sees average daytime highs around 28°C and overnight lows near 16°C, with 405 mm of rain over about 52 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 31°C in early June to 26°C by late August. The sky is clear or mostly clear about 32% of the time across summer, and the air most often feels comfortable.
Summer is San Juan de los Lagos's weakest season of the year to visit on our travel score. For the whole year in context, see San Juan de los Lagos's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 405 mm
- 52 wet days
- Avg wind
- 8 km/h
- Travel score
- 5.1
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in San Juan de los Lagos in Summer
Over the season highs ease from about 31°C in early June to 26°C by late August.
A typical summer day in San Juan de los Lagos reaches about 28°C and drops to 16°C overnight. The warmest of the three months is June, the coolest August.
San Juan de los Lagos weather by month
How the three summer months (June, July and August) compare with the rest of the year — the season's months are highlighted.
| Month | High / Low (°C) | Rainfall (mm) | Wet days | Daylight (hours) | Travel score |
|---|---|---|---|---|---|
| Jan | 23° / 8° | 16 | 2 | 10.9 | 8.5 |
| Feb | 25° / 10° | 10 | 1.6 | 11.3 | 8.6 |
| Mar | 28° / 12° | 7 | 1.1 | 11.8 | 7.9 |
| Apr | 30° / 14° | 5 | 0.9 | 12.5 | 6.2 |
| May | 31° / 17° | 24 | 5.1 | 13 | 5.1 |
| Jun | 30° / 17° | 115 | 13.8 | 13.3 | 4.8 |
| Jul | 27° / 16° | 153 | 19.8 | 13.2 | 5.2 |
| Aug | 27° / 16° | 137 | 18.2 | 12.7 | 5.4 |
| Sep | 26° / 15° | 111 | 15.2 | 12.1 | 5.7 |
| Oct | 27° / 14° | 40 | 6.7 | 11.5 | 7.3 |
| Nov | 25° / 11° | 10 | 2.2 | 11 | 8.5 |
| Dec | 24° / 9° | 7 | 1.1 | 10.7 | 8.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 32% of the time across summer.
Chance of precipitation in Summer
San Juan de los Lagos gets around 405 mm of rain over 52 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels comfortable — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 12 min in early June to 12 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.6 kWh/m².
Hazard calendar for San Juan de los Lagos
In summer, San Juan de los Lagos overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
San Juan de los Lagos's rainy season runs June–September, when most of the year's rain falls.
Is summer a good time to visit San Juan de los Lagos?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a reasonable time to visit San Juan de los Lagos for sightseeing.
What to pack for San Juan de los Lagos in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, San Juan de los Lagos sees daytime highs around 28°C and nights near 16°C. Pack light clothes, rain gear and sun protection. About 52 days see rain.
UV index in San Juan de los Lagos in Summer
Clear-sky midday UV across summer averages 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 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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 8 | 10 | 13 | 14 | 14 | 14 | 13 | 13 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 10 | Extreme |
| Mar | 13 | Extreme |
| Apr | 14 | Extreme |
| May | 14 | Extreme |
| Jun | 14 | Extreme |
| Jul | 13 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in San Juan de los Lagos in Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 18 | 17 | 16 | 17 | 21 | 15 | 16 | 15 | 17 | 14 | 16 | 20 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 18 | Moderate |
| Feb | 17 | Moderate |
| Mar | 16 | Moderate |
| Apr | 17 | Moderate |
| May | 21 | Moderate |
| Jun | 15 | Moderate |
| Jul | 16 | Moderate |
| Aug | 15 | Moderate |
| Sep | 17 | Moderate |
| Oct | 14 | Moderate |
| Nov | 16 | Moderate |
| Dec | 20 | Moderate |
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.
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
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.