Umán in Fall
In fall (September, October and November), Umán sees average daytime highs around 32°C and overnight lows near 22°C, with 257 mm of rain over about 40 wet days across the season. It is the 3rd-warmest season and the 2nd-wettest season.
Over the season highs ease from about 34°C in early September to 30°C by late November. The sky is clear or mostly clear about 32% of the time across fall, and the air most often feels oppressive.
Fall is Umán's 2nd-best season to visit on our travel score. For the whole year in context, see Umán's year-round climate.
- Avg daytime high
- 32°C
- 3rd-warmest season
- Avg overnight low
- 22°C
- Rainfall
- 257 mm
- 40 wet days
- Avg wind
- 9 km/h
- Travel score
- 4.0
- 2nd-best season
- Months
- Sep · Oct · Nov
Temperature in Umán in Fall
Over the season highs ease from about 34°C in early September to 30°C by late November.
A typical fall day in Umán reaches about 32°C and drops to 22°C overnight. The warmest of the three months is September, the coolest November.
How fall really feels in Umán
Once humidity and wind are folded in, fall brings about 74 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.
Umán 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 | 29° / 19° | 20 | 4.3 | 10.9 | 6.4 |
| Feb | 31° / 19° | 15 | 3.3 | 11.3 | 5.6 |
| Mar | 33° / 21° | 14 | 3 | 11.9 | 4.3 |
| Apr | 35° / 22° | 22 | 4.3 | 12.5 | 3.0 |
| May | 36° / 24° | 50 | 7.8 | 13 | 2.4 |
| Jun | 35° / 25° | 123 | 16.5 | 13.2 | 2.3 |
| Jul | 34° / 24° | 82 | 15.1 | 13.1 | 2.5 |
| Aug | 34° / 24° | 99 | 17 | 12.7 | 2.4 |
| Sep | 33° / 24° | 139 | 19.6 | 12.1 | 2.6 |
| Oct | 32° / 23° | 88 | 13.9 | 11.5 | 3.9 |
| Nov | 30° / 21° | 30 | 6.4 | 11 | 5.5 |
| Dec | 29° / 19° | 23 | 4.3 | 10.8 | 6.3 |
Cloud cover in Fall
The sky is clear or mostly clear about 32% of the time across fall.
Chance of precipitation in Fall
Umán gets around 257 mm of rain over 40 wet days across fall. The line is the day-by-day chance of measurable precipitation.
Humidity in Fall
Most of fall feels oppressive — 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 48 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 4.9 kWh/m².
Hazard calendar for Umán
In fall, Umán overlaps its atlantic hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Umán sits in the Atlantic hurricane belt; the season peaks August–October.
Umán's rainy season runs June–October, when most of the year's rain falls.
Is fall a good time to visit Umán?
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 Umán for sightseeing. The water and warmth also suit a beach or pool day.
What to pack for Umán in Fall
From fall's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In fall, Umán sees daytime highs around 32°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 40 days see rain.
Sea temperature near Umán in Fall
The nearest coast averages about 27°C across fall — the other half of the beach question. The full-year curve and swim-comfort zones are below.
The sea at the nearest coast (about 48 km away) is warmest in September at about 28°C and coldest in January near 24°C.
The water stays above 20°C all year — warm enough for a swim any month.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Sea temperature (°C) | 24 | 24 | 25 | 26 | 27 | 27 | 27 | 28 | 28 | 28 | 26 | 25 |
| Comfort | Refreshing | Refreshing | Warm | Warm | Warm | Warm | Warm | Warm | Tropical | Warm | Warm | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 24 | Refreshing |
| Feb | 24 | Refreshing |
| Mar | 25 | Warm |
| Apr | 26 | Warm |
| May | 27 | Warm |
| Jun | 27 | Warm |
| Jul | 27 | Warm |
| Aug | 28 | Warm |
| Sep | 28 | Tropical |
| Oct | 28 | Warm |
| Nov | 26 | Warm |
| Dec | 25 | Warm |
UV index in Umán in Fall
Clear-sky midday UV across fall averages around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Umán peaks around June 16 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 17 at about 6 (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) | 7 | 10 | 11 | 12 | 11 | 13 | 11 | 12 | 11 | 10 | 7 | 6 |
| Level | High | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 7 | High |
| Feb | 10 | Very high |
| Mar | 11 | Extreme |
| Apr | 12 | Extreme |
| May | 11 | Extreme |
| Jun | 13 | Extreme |
| Jul | 11 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Umán 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 Umán is worst in June — around 26 µg/m³ PM2.5 (moderate), about 3.4× the cleanest month (November, 8 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) | 8 | 9 | 11 | 21 | 20 | 26 | 24 | 19 | 15 | 10 | 8 | 8 |
| Level | Good | Good | Good | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 9 | Good |
| Mar | 11 | Good |
| Apr | 21 | Moderate |
| May | 20 | Moderate |
| Jun | 26 | Moderate |
| Jul | 24 | Moderate |
| Aug | 19 | Moderate |
| Sep | 15 | Moderate |
| Oct | 10 | Good |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Umán?
Umán sits at 20.9°N, 89.7°W, 15 m above sea level, in Mexico. The nearest listed city is Merida, 16 km away.
Topography around Umán
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Umán.
Within 3 km, the terrain around Umán has only modest variations in elevation — a maximum elevation change of 13 m around an average of 10 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 33 m; within 80 km, only modest variations in elevation — a maximum elevation change of 152 m.
The land around Umán is covered by trees (69%) within 3 km, trees (79%) within 16 km, and trees (64%) and water (24%) 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 Umán (20.8815°, -89.748°, elevation 15 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.