Castaños in Fall
In fall (September, October and November), Castaños sees average daytime highs around 26°C and overnight lows near 15°C, with 181 mm of rain over about 24 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 30°C in early September to 21°C by late November. The sky is clear or mostly clear about 53% of the time across fall, and the air most often feels dry.
Fall is Castaños's 2nd-best season to visit on our travel score. For the whole year in context, see Castaños's year-round climate.
- Avg daytime high
- 26°C
- 3rd-warmest season
- Avg overnight low
- 15°C
- Rainfall
- 181 mm
- 24 wet days
- Avg wind
- 6 km/h
- Travel score
- 7.1
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Castaños in Fall
Over the season highs ease from about 30°C in early September to 21°C by late November.
A typical fall day in Castaños reaches about 26°C and drops to 15°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Castaños
Once humidity and wind are folded in, fall brings about 0 days that feel above 32°C and 0 that feel at or below 0°C.
fall sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.
Castaños 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 | 19° / 7° | 17 | 3.6 | 10.5 | 7.2 |
| Feb | 22° / 9° | 12 | 3.1 | 11.1 | 8.0 |
| Mar | 25° / 13° | 24 | 4.3 | 11.8 | 8.0 |
| Apr | 29° / 16° | 27 | 5.8 | 12.6 | 6.2 |
| May | 32° / 20° | 49 | 11.6 | 13.3 | 4.3 |
| Jun | 33° / 22° | 56 | 10.2 | 13.7 | 3.8 |
| Jul | 32° / 22° | 81 | 10.2 | 13.5 | 4.0 |
| Aug | 32° / 22° | 64 | 9.2 | 12.9 | 4.3 |
| Sep | 28° / 19° | 121 | 13 | 12.2 | 5.6 |
| Oct | 26° / 15° | 39 | 6.7 | 11.4 | 7.6 |
| Nov | 22° / 11° | 21 | 3.9 | 10.7 | 8.0 |
| Dec | 19° / 7° | 19 | 3.4 | 10.3 | 7.4 |
Cloud cover in Fall
The sky is clear or mostly clear about 53% of the time across fall.
Chance of precipitation in Fall
Castaños gets around 181 mm of rain over 24 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 6 km/h across fall.
Sunrise & sunset in Fall
Daylight runs from about 12 h 36 min in early September to 10 h 24 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 4.7 kWh/m².
Hazard calendar for Castaños
In fall, Castaños overlaps its rainy season season. The full year is below, with each hazard's peak months called out.
Castaños's rainy season runs June–September, when most of the year's rain falls.
Is fall a good time to visit Castaños?
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 Castaños for general sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Castaños in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Castaños sees daytime highs around 26°C and nights near 15°C. Pack light clothes. Worth having: rain gear and sun protection. About 24 days see rain.
UV index in Castaños in Fall
Clear-sky midday UV across fall averages around 8 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Castaños peaks around July 15 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 5 (moderate).
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) | 6 | 7 | 9 | 11 | 12 | 12 | 12 | 11 | 11 | 8 | 6 | 5 |
| Level | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 7 | Very high |
| Mar | 9 | Very high |
| Apr | 11 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 5 | Moderate |
Air quality in Castaños 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 Castaños is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (January, 9 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) | 9 | 9 | 9 | 11 | 15 | 15 | 18 | 15 | 14 | 11 | 10 | 9 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 9 | Good |
| Feb | 9 | Good |
| Mar | 9 | Good |
| Apr | 11 | Good |
| May | 15 | Moderate |
| Jun | 15 | Moderate |
| Jul | 18 | Moderate |
| Aug | 15 | Moderate |
| Sep | 14 | Moderate |
| Oct | 11 | Good |
| Nov | 10 | Good |
| Dec | 9 | Good |
Where is Castaños?
Castaños sits at 26.8°N, 101.4°W, 756 m above sea level, in Mexico. The nearest listed city is Monclova, 13 km away.
Topography around Castaños
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Castaños.
Within 3 km, the terrain around Castaños has only modest variations in elevation — a maximum elevation change of 240 m around an average of 777 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,344 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,316 m.
The land around Castaños is covered by shrubs (58%) and artificial surfaces (26%) within 3 km, shrubs (81%) within 16 km, and shrubs (88%) 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 Castaños (26.7893°, -101.4321°, elevation 756 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.