Santa María Ajoloapan in Fall
In fall (September, October and November), Santa María Ajoloapan sees average daytime highs around 23°C and overnight lows near 11°C, with 148 mm of rain over about 26 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Across fall, daytime highs hold fairly steady around 23°C. The sky is clear or mostly clear about 31% of the time across fall, and the air most often feels dry.
Fall is Santa María Ajoloapan's 3rd-best season to visit on our travel score. For the whole year in context, see Santa María Ajoloapan's year-round climate.
- Avg daytime high
- 23°C
- 3rd-warmest season
- Avg overnight low
- 11°C
- Rainfall
- 148 mm
- 26 wet days
- Avg wind
- 7 km/h
- Travel score
- 7.2
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Santa María Ajoloapan in Fall
Across fall, daytime highs hold fairly steady around 23°C.
A typical fall day in Santa María Ajoloapan reaches about 23°C and drops to 11°C overnight. The warmest of the three months is September, the coolest November.
Santa María Ajoloapan 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° | 8 | 1.8 | 10.9 | 8.3 |
| Feb | 24° / 9° | 6 | 1.3 | 11.3 | 8.8 |
| Mar | 26° / 11° | 7 | 2.2 | 11.9 | 8.3 |
| Apr | 27° / 13° | 16 | 4.3 | 12.4 | 7.5 |
| May | 28° / 13° | 25 | 6.4 | 12.9 | 7.1 |
| Jun | 26° / 14° | 82 | 13.1 | 13.2 | 6.1 |
| Jul | 25° / 13° | 86 | 15.9 | 13.1 | 5.9 |
| Aug | 25° / 14° | 90 | 16.1 | 12.7 | 5.8 |
| Sep | 24° / 13° | 96 | 15.7 | 12.1 | 5.9 |
| Oct | 23° / 11° | 41 | 7.9 | 11.5 | 7.2 |
| Nov | 23° / 9° | 11 | 2.5 | 11.1 | 8.4 |
| Dec | 22° / 8° | 5 | 1 | 10.8 | 8.6 |
Cloud cover in Fall
The sky is clear or mostly clear about 31% of the time across fall.
Chance of precipitation in Fall
Santa María Ajoloapan gets around 148 mm of rain over 26 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 7 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 5.1 kWh/m².
Is fall a good time to visit Santa María Ajoloapan?
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 Santa María Ajoloapan for general sightseeing.
What to pack for Santa María Ajoloapan in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Santa María Ajoloapan sees daytime highs around 23°C and nights near 11°C. Pack rain gear. Worth having: light clothes and sun protection. About 26 days see rain.
UV index in Santa María Ajoloapan 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 Santa María Ajoloapan peaks around June 17 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 | 11 | 14 | 14 | 11 | 15 | 12 | 14 | 11 | 11 | 9 | 8 |
| 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 | 11 | Extreme |
| Mar | 14 | Extreme |
| Apr | 14 | Extreme |
| May | 11 | Extreme |
| Jun | 15 | Extreme |
| Jul | 12 | Extreme |
| Aug | 14 | Extreme |
| Sep | 11 | Extreme |
| Oct | 11 | Extreme |
| Nov | 9 | Very high |
| Dec | 8 | Very high |
Air quality in Santa María Ajoloapan 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 Santa María Ajoloapan is worst in December — around 179 µg/m³ PM2.5 (very unhealthy), 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) | 149 | 141 | 126 | 113 | 134 | 126 | 135 | 127 | 136 | 137 | 174 | 179 |
| Level | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Unhealthy | Very unhealthy | Very unhealthy |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 149 | Unhealthy |
| Feb | 141 | Unhealthy |
| Mar | 126 | Unhealthy |
| Apr | 113 | Unhealthy |
| May | 134 | Unhealthy |
| Jun | 126 | Unhealthy |
| Jul | 135 | Unhealthy |
| Aug | 127 | Unhealthy |
| Sep | 136 | Unhealthy |
| Oct | 137 | Unhealthy |
| Nov | 174 | Very unhealthy |
| Dec | 179 | Very unhealthy |
Where is Santa María Ajoloapan?
Santa María Ajoloapan sits at 19.8°N, 99.0°W, 2,283 m above sea level, in Mexico. The nearest listed city is Reyes Acozac, 3.0 km away.
Topography around Santa María Ajoloapan
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa María Ajoloapan.
Within 3 km, the terrain around Santa María Ajoloapan has only modest variations in elevation — a maximum elevation change of 151 m around an average of 2,280 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 822 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,973 m.
The land around Santa María Ajoloapan is covered by cropland (41%) and artificial surfaces (29%) within 3 km, cropland (46%) and artificial surfaces (23%) within 16 km, and cropland (29%), trees (26%) and shrubs (21%) 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 Santa María Ajoloapan (19.7636°, -98.9591°, elevation 2,283 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.