San Juan del Río in Fall
In fall (September, October and November), San Juan del Río sees average daytime highs around 24°C and overnight lows near 12°C, with 157 mm of rain over about 23 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 24°C. The sky is clear or mostly clear about 33% of the time across fall, and the air most often feels dry.
Fall is San Juan del Río's 2nd-best season to visit on our travel score. For the whole year in context, see San Juan del Río's year-round climate.
- Avg daytime high
- 24°C
- 3rd-warmest season
- Avg overnight low
- 12°C
- Rainfall
- 157 mm
- 23 wet days
- Avg wind
- 9 km/h
- Travel score
- 7.4
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in San Juan del Río in Fall
Across fall, daytime highs hold fairly steady around 24°C.
A typical fall day in San Juan del Río reaches about 24°C and drops to 12°C overnight. The warmest of the three months is September, the coolest November.
San Juan del Río weather by month
How the three fall months (September, October and November) 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 | 22° / 7° | 13 | 2.7 | 10.9 | 8.1 |
| Feb | 25° / 9° | 14 | 2.5 | 11.3 | 8.4 |
| Mar | 27° / 10° | 13 | 3 | 11.9 | 7.9 |
| Apr | 29° / 13° | 21 | 4.5 | 12.5 | 6.4 |
| May | 29° / 14° | 38 | 8 | 13 | 5.9 |
| Jun | 27° / 15° | 90 | 12.4 | 13.2 | 6.0 |
| Jul | 26° / 15° | 93 | 13.7 | 13.1 | 6.1 |
| Aug | 26° / 15° | 82 | 12.1 | 12.7 | 6.2 |
| Sep | 25° / 14° | 98 | 13.3 | 12.1 | 6.2 |
| Oct | 24° / 12° | 43 | 7 | 11.5 | 7.5 |
| Nov | 24° / 10° | 16 | 3.1 | 11 | 8.4 |
| Dec | 23° / 8° | 5 | 1.3 | 10.8 | 8.5 |
Cloud cover in Fall
The sky is clear or mostly clear about 33% of the time across fall.
Chance of precipitation in Fall
San Juan del Río gets around 157 mm of rain over 23 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Fall
Winds average 9 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 24 min in early September to 10 h 54 min by late November. The lit band spans sunrise to sunset each day.
Solar energy in Fall
Average shortwave solar energy reaching the ground each day across fall, about 5.0 kWh/m².
Hazard calendar for San Juan del Río
In fall, San Juan del Río overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
San Juan del Río's rainy season runs June–September, when most of the year's rain falls.
Is fall a good time to visit San Juan del Río?
Our two travel scores rate fall for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
fall is one of the better times to visit San Juan del Río for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for San Juan del Río in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, San Juan del Río sees daytime highs around 24°C and nights near 12°C. Worth packing: light clothes, rain gear and sun protection. About 23 days see rain.
UV index in San Juan del Río in Fall
Clear-sky midday UV across fall averages around 10 (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.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 9 | 10 | 14 | 14 | 13 | 14 | 12 | 14 | 12 | 11 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 10 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 13 | Extreme |
| Jun | 14 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 12 | Extreme |
| Oct | 11 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in San Juan del Río in Fall
Average fine-particle pollution (PM2.5) through the year — so you can see where fall 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).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 44 | 42 | 38 | 35 | 35 | 30 | 40 | 32 | 30 | 29 | 37 | 46 |
| Level | Poor | Poor | Poor | Poor | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Poor | Poor |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 44 | Poor |
| Feb | 42 | Poor |
| Mar | 38 | Poor |
| Apr | 35 | Poor |
| May | 35 | Moderate |
| Jun | 30 | Moderate |
| Jul | 40 | Poor |
| Aug | 32 | Moderate |
| Sep | 30 | Moderate |
| Oct | 29 | Moderate |
| Nov | 37 | Poor |
| Dec | 46 | Poor |
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.
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 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.