Santa Isabel in Fall
In fall (September, October and November), Santa Isabel sees average daytime highs around 33°C and overnight lows near 18°C, with 18 mm of rain over about 3 wet days across the season. It is the 2nd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 41°C in early September to 23°C by late November. The sky is clear or mostly clear about 82% of the time across fall, and the air most often feels dry.
Fall is Santa Isabel's 3rd-best season to visit on our travel score. For the whole year in context, see Santa Isabel's year-round climate.
- Avg daytime high
- 33°C
- 2nd-warmest season
- Avg overnight low
- 18°C
- Rainfall
- 18 mm
- 3 wet days
- Avg wind
- 7 km/h
- Travel score
- 4.7
- 3rd-best season
- Months
- Sep · Oct · Nov
Temperature in Santa Isabel in Fall
Over the season highs ease from about 41°C in early September to 23°C by late November.
A typical fall day in Santa Isabel reaches about 33°C and drops to 18°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Santa Isabel
Once humidity and wind are folded in, fall brings about 50 days that feel above 32°C and 0 that feel at or below 0°C.
The story in fall is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Santa Isabel 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° / 9° | 9 | 1.7 | 10.1 | 8.4 |
| Feb | 24° / 10° | 12 | 2 | 10.8 | 8.7 |
| Mar | 28° / 12° | 8 | 1.1 | 11.8 | 7.9 |
| Apr | 31° / 15° | 3 | 0.5 | 12.8 | 5.8 |
| May | 36° / 19° | 1 | 0.2 | 13.7 | 3.1 |
| Jun | 40° / 23° | 0 | 0 | 14.1 | 0.4 |
| Jul | 43° / 27° | 5 | 1.5 | 13.9 | 0.0 |
| Aug | 42° / 28° | 9 | 2.5 | 13.2 | 0.0 |
| Sep | 39° / 24° | 9 | 1.4 | 12.2 | 0.8 |
| Oct | 33° / 18° | 5 | 0.7 | 11.2 | 4.8 |
| Nov | 26° / 12° | 4 | 0.6 | 10.3 | 8.6 |
| Dec | 21° / 8° | 9 | 1.5 | 9.9 | 8.2 |
Cloud cover in Fall
The sky is clear or mostly clear about 82% of the time across fall.
Chance of precipitation in Fall
Santa Isabel gets around 18 mm of rain over 3 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 42 min in early September to 10 hours 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 5.2 kWh/m².
Is fall a good time to visit Santa Isabel?
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 a reasonable time to visit Santa Isabel for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Santa Isabel in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Santa Isabel sees daytime highs around 33°C and nights near 18°C. Pack light clothes and sun protection.
UV index in Santa Isabel in Fall
Clear-sky midday UV across fall averages around 6 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Santa Isabel peaks around June 21 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 3 (moderate).
The index reaches 3 or more — the level where the WHO recommends sun protection — in 11 months of the year.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| UV index (midday) | 4 | 5 | 5 | 8 | 8 | 11 | 10 | 10 | 8 | 6 | 4 | 3 |
| Level | Moderate | Moderate | Moderate | Very high | Very high | Extreme | Extreme | Extreme | Very high | High | Moderate | Moderate |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 4 | Moderate |
| Feb | 5 | Moderate |
| Mar | 5 | Moderate |
| Apr | 8 | Very high |
| May | 8 | Very high |
| Jun | 11 | Extreme |
| Jul | 10 | Extreme |
| Aug | 10 | Extreme |
| Sep | 8 | Very high |
| Oct | 6 | High |
| Nov | 4 | Moderate |
| Dec | 3 | Moderate |
Where is Santa Isabel?
Santa Isabel sits at 32.6°N, 115.6°W, -8 m above sea level, in Mexico. The nearest listed city is Calexico, 9.0 km away.
Topography around Santa Isabel
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Santa Isabel.
Within 3 km, the terrain around Santa Isabel has only modest variations in elevation — a maximum elevation change of 8 m around an average of 0 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 788 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,962 m.
The land around Santa Isabel is covered by bare terrain (56%) and cropland (21%) within 3 km, bare terrain (48%) and cropland (29%) within 16 km, and bare terrain (53%), shrubs (20%) and cropland (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 Santa Isabel (32.6307°, -115.5704°, elevation -8 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.