Monterrey in Summer
In summer (June, July and August), Monterrey sees average daytime highs around 34°C and overnight lows near 22°C, with 111 mm of rain over about 15 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Across summer, daytime highs hold fairly steady around 34°C. The sky is clear or mostly clear about 56% of the time across summer, and the air most often feels muggy.
Summer is Monterrey's weakest season of the year to visit on our travel score. For the whole year in context, see Monterrey's year-round climate.
- Avg daytime high
- 34°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 111 mm
- 15 wet days
- Avg wind
- 9 km/h
- Travel score
- 3.7
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Monterrey in Summer
Across summer, daytime highs hold fairly steady around 34°C.
A typical summer day in Monterrey reaches about 34°C and drops to 22°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Monterrey
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.
Monterrey 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 | 20° / 9° | 37 | 6.3 | 10.6 | 7.0 |
| Feb | 23° / 11° | 33 | 5.7 | 11.1 | 7.6 |
| Mar | 26° / 14° | 46 | 7.1 | 11.8 | 7.5 |
| Apr | 29° / 17° | 46 | 6.7 | 12.6 | 6.1 |
| May | 31° / 20° | 52 | 7.7 | 13.2 | 4.7 |
| Jun | 33° / 22° | 39 | 5.4 | 13.6 | 3.9 |
| Jul | 34° / 23° | 41 | 4.7 | 13.4 | 3.6 |
| Aug | 34° / 23° | 31 | 4.5 | 12.9 | 3.6 |
| Sep | 30° / 21° | 117 | 10.4 | 12.2 | 4.9 |
| Oct | 27° / 17° | 59 | 7.2 | 11.4 | 7.0 |
| Nov | 23° / 13° | 38 | 6.3 | 10.7 | 7.7 |
| Dec | 20° / 10° | 32 | 5.7 | 10.4 | 7.2 |
Cloud cover in Summer
The sky is clear or mostly clear about 56% of the time across summer.
Chance of precipitation in Summer
Monterrey gets around 111 mm of rain over 15 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels muggy — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 9 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 30 min in early June to 12 h 36 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 6.7 kWh/m².
Is summer a good time to visit Monterrey?
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 Monterrey. The water and warmth also suit a beach or pool day.
What to pack for Monterrey in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Monterrey sees daytime highs around 34°C and nights near 22°C. Pack light clothes and sun protection. About 15 days see rain.
UV index in Monterrey 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 Monterrey peaks around June 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 5 (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) | 6 | 8 | 10 | 12 | 12 | 12 | 12 | 12 | 11 | 8 | 6 | 5 |
| Level | High | Very high | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | High | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 6 | High |
| Feb | 8 | Very high |
| Mar | 10 | Very high |
| Apr | 12 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 6 | High |
| Dec | 5 | High |
Air quality in Monterrey 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 Monterrey is worst in December — around 26 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Monterrey's WHO annual average of 23 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 25 | 22 | 26 | 23 | 24 | 21 | 21 | 19 | 22 | 22 | 24 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 25 | Moderate |
| Feb | 22 | Moderate |
| Mar | 26 | Moderate |
| Apr | 23 | Moderate |
| May | 24 | Moderate |
| Jun | 21 | Moderate |
| Jul | 21 | Moderate |
| Aug | 19 | Moderate |
| Sep | 22 | Moderate |
| Oct | 22 | Moderate |
| Nov | 24 | Moderate |
| Dec | 26 | Moderate |
Where is Monterrey?
Monterrey sits at 25.7°N, 100.3°W, 560 m above sea level, in Mexico. The nearest listed city is Guadalupe, 6.0 km away.
Topography around Monterrey
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Monterrey.
Within 3 km, the terrain around Monterrey has only modest variations in elevation — a maximum elevation change of 172 m around an average of 542 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,798 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,519 m.
The land around Monterrey is covered by artificial surfaces (94%) within 3 km, artificial surfaces (54%) and trees (28%) within 16 km, and shrubs (55%) and trees (30%) 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 Monterrey (25.6843°, -100.3172°, elevation 560 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.