Umán in Summer
In summer (June, July and August), Umán sees average daytime highs around 34°C and overnight lows near 24°C, with 304 mm of rain over about 49 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 34°C. The sky is clear or mostly clear about 27% of the time across summer, and the air most often feels oppressive.
Summer is Umán's weakest 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
- 34°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 304 mm
- 49 wet days
- Avg wind
- 10 km/h
- Travel score
- 2.4
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Umán in Summer
Across summer, daytime highs hold fairly steady around 34°C.
A typical summer day in Umán reaches about 34°C and drops to 24°C overnight. The warmest of the three months is June, the coolest July.
How summer really feels in Umán
Once humidity and wind are folded in, summer brings about 92 days that feel above 32°C and 0 that feel at or below 0°C.
The story in summer is heat — humidity pushes the afternoon "feels like" well above the raw temperature.
Umán weather by month
How the three summer months (June, July and August) 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 Summer
The sky is clear or mostly clear about 27% of the time across summer.
Chance of precipitation in Summer
Umán gets around 304 mm of rain over 49 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 10 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 12 min in early June to 12 h 24 min by late August. The lit band spans sunrise to sunset each day.
Solar energy in Summer
Average shortwave solar energy reaching the ground each day across summer, about 6.4 kWh/m².
Hazard calendar for Umán
In summer, 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 summer a good time to visit Umán?
Our two travel scores rate summer for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal), averaged across the three months.
summer is a weaker month for outdoor sightseeing in Umán.
What to pack for Umán in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Umán sees daytime highs around 34°C and nights near 24°C. Pack light clothes, rain gear and sun protection. About 49 days see rain.
Sea temperature near Umán in Summer
The nearest coast averages about 27°C across summer — 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 Summer
Clear-sky midday UV across summer averages around 12 (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 Summer
Average fine-particle pollution (PM2.5) through the year — so you can see where summer 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.