Atotonilco el Alto in Summer
In summer (June, July and August), Atotonilco el Alto sees average daytime highs around 28°C and overnight lows near 16°C, with 524 mm of rain over about 65 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 27°C by late August. The sky is clear or mostly clear about 17% of the time across summer, and the air most often feels comfortable.
Summer is Atotonilco el Alto's weakest season of the year to visit on our travel score. For the whole year in context, see Atotonilco el Alto's year-round climate.
- Avg daytime high
- 28°C
- 2nd-warmest season
- Avg overnight low
- 16°C
- Rainfall
- 524 mm
- 65 wet days
- Avg wind
- 5 km/h
- Travel score
- 4.4
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Atotonilco el Alto in Summer
Over the season highs ease from about 31°C in early June to 27°C by late August.
A typical summer day in Atotonilco el Alto reaches about 28°C and drops to 16°C overnight. The warmest of the three months is June, the coolest August.
Atotonilco el Alto 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 | 24° / 8° | 14 | 1.8 | 10.9 | 8.7 |
| Feb | 26° / 10° | 9 | 1.3 | 11.3 | 8.6 |
| Mar | 28° / 11° | 7 | 0.9 | 11.9 | 7.8 |
| Apr | 30° / 13° | 4 | 0.9 | 12.5 | 6.1 |
| May | 32° / 15° | 26 | 5.1 | 13 | 4.9 |
| Jun | 30° / 17° | 145 | 18.3 | 13.2 | 4.1 |
| Jul | 27° / 16° | 203 | 24.4 | 13.1 | 4.4 |
| Aug | 27° / 16° | 176 | 22.4 | 12.7 | 4.6 |
| Sep | 27° / 15° | 150 | 18.9 | 12.1 | 5.0 |
| Oct | 27° / 14° | 49 | 8.4 | 11.5 | 6.8 |
| Nov | 26° / 11° | 11 | 2.2 | 11 | 8.4 |
| Dec | 24° / 9° | 5 | 1 | 10.8 | 8.8 |
Cloud cover in Summer
The sky is clear or mostly clear about 17% of the time across summer.
Chance of precipitation in Summer
Atotonilco el Alto gets around 524 mm of rain over 65 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 5 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 6.0 kWh/m².
Hazard calendar for Atotonilco el Alto
In summer, Atotonilco el Alto overlaps its monsoon season. The full year is below, with each hazard's peak months called out.
Atotonilco el Alto's monsoon runs June–September, when most of the year's rain falls.
Is summer a good time to visit Atotonilco el Alto?
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 Atotonilco el Alto for sightseeing.
What to pack for Atotonilco el Alto in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Atotonilco el Alto sees daytime highs around 28°C and nights near 16°C. Pack light clothes, rain gear and sun protection. About 65 days see rain.
UV index in Atotonilco el Alto 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 Atotonilco el Alto peaks around May 21 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 | 11 | 13 | 13 | 14 | 14 | 12 | 13 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 14 | Extreme |
| Jun | 14 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Extreme |
| Nov | 8 | Very high |
| Dec | 7 | Very high |
Air quality in Atotonilco el Alto 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 Atotonilco el Alto is worst in May — around 32 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (July, 15 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) | 22 | 20 | 21 | 31 | 32 | 17 | 15 | 16 | 18 | 18 | 20 | 25 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 22 | Moderate |
| Feb | 20 | Moderate |
| Mar | 21 | Moderate |
| Apr | 31 | Moderate |
| May | 32 | Moderate |
| Jun | 17 | Moderate |
| Jul | 15 | Moderate |
| Aug | 16 | Moderate |
| Sep | 18 | Moderate |
| Oct | 18 | Moderate |
| Nov | 20 | Moderate |
| Dec | 25 | Moderate |
Where is Atotonilco el Alto?
Atotonilco el Alto sits at 20.6°N, 102.5°W, 1,604 m above sea level, in Mexico. The nearest listed city is Arandas, 24 km away.
Topography around Atotonilco el Alto
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Atotonilco el Alto.
Within 3 km, the terrain around Atotonilco el Alto has significant variations in elevation — a maximum elevation change of 378 m around an average of 1,718 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 575 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,730 m.
The land around Atotonilco el Alto is covered by trees (41%) within 3 km, cropland (43%) and trees (31%) within 16 km, and cropland (37%) and grassland (20%) 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 Atotonilco el Alto (20.5508°, -102.5082°, elevation 1,604 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.