Umán in Winter
In winter (December, January and February), Umán sees average daytime highs around 30°C and overnight lows near 19°C, with 58 mm of rain over about 12 wet days across the season. It is the coldest season of the year and the driest season of the year.
Over the season highs climb from about 30°C in early December to 32°C by late February. The sky is clear or mostly clear about 50% of the time across winter, and the air most often feels muggy.
Winter is Umán's best season of the year to visit on our travel score. For the whole year in context, see Umán's year-round climate.
- Avg daytime high
- 30°C
- coldest season of the year
- Avg overnight low
- 19°C
- Rainfall
- 58 mm
- 12 wet days
- Avg wind
- 11 km/h
- Travel score
- 6.1
- best season of the year
- Months
- Dec · Jan · Feb
Temperature in Umán in Winter
Over the season highs climb from about 30°C in early December to 32°C by late February.
A typical winter day in Umán reaches about 30°C and drops to 19°C overnight. The warmest of the three months is February, the coolest January.
How winter really feels in Umán
Once humidity and wind are folded in, winter brings about 9 days that feel above 32°C and 0 that feel at or below 0°C.
The story in winter is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Umán weather by month
How the three winter months (December, January and February) 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 Winter
The sky is clear or mostly clear about 50% of the time across winter.
Chance of precipitation in Winter
Umán gets around 58 mm of rain over 12 wet days across winter. The line is the day-by-day chance of measurable precipitation.
Humidity in Winter
Most of winter feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Winter
Winds average 11 km/h across winter.
Sunrise & sunset in Winter
Daylight runs from about 10 h 48 min in early December to 11 h 30 min by late February. The lit band spans sunrise to sunset each day.
Solar energy in Winter
Average shortwave solar energy reaching the ground each day across winter, about 4.3 kWh/m².
Hazard calendar for Umán
None of Umán's seasonal hazards peak in winter. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do.
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 winter a good time to visit Umán?
Our two travel scores rate winter for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
winter 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 Winter
From winter's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In winter, Umán sees daytime highs around 30°C and nights near 19°C. Pack light clothes. Worth having: sun protection. About 12 days see rain.
Sea temperature near Umán in Winter
The nearest coast averages about 24°C across winter — 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 Winter
Clear-sky midday UV across winter averages around 8 — enough to warrant sun protection. 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 Winter
Average fine-particle pollution (PM2.5) through the year — so you can see where winter 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.