Mexicali in Summer
In summer (June, July and August), Mexicali sees average daytime highs around 42°C and overnight lows near 26°C, with 14 mm of rain over about 4 wet days across the season. It is the warmest season of the year and the 3rd-wettest season.
Over the season highs climb from about 38°C in early June to 41°C by late August. The sky is clear or mostly clear about 83% of the time across summer, and the air most often feels dry.
Summer is Mexicali's weakest season of the year to visit on our travel score. For the whole year in context, see Mexicali's year-round climate.
- Avg daytime high
- 42°C
- warmest season of the year
- Avg overnight low
- 26°C
- Rainfall
- 14 mm
- 4 wet days
- Avg wind
- 8 km/h
- Travel score
- 0.1
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Mexicali in Summer
Over the season highs climb from about 38°C in early June to 41°C by late August.
A typical summer day in Mexicali reaches about 42°C and drops to 26°C overnight. The warmest of the three months is July, the coolest June.
How summer really feels in Mexicali
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.
Mexicali 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 | 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 Summer
The sky is clear or mostly clear about 83% of the time across summer.
Chance of precipitation in Summer
Mexicali gets around 14 mm of rain over 4 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels dry — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 8 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 14 hours in early June to 12 h 42 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 7.8 kWh/m².
Is summer a good time to visit Mexicali?
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 Mexicali.
What to pack for Mexicali in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Mexicali sees daytime highs around 42°C and nights near 26°C. Pack light clothes and sun protection.
UV index in Mexicali in Summer
Clear-sky midday UV across summer averages around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Mexicali 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 |
Air quality in Mexicali 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 Mexicali is worst in June — around 33 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.
Seasonal pattern from CAMS reanalysis, scaled to Mexicali's WHO annual average of 25.5 µg/m³.
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| PM2.5 (µg/m³) | 24 | 25 | 26 | 24 | 21 | 33 | 31 | 25 | 26 | 22 | 21 | 26 |
| Level | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 24 | Moderate |
| Feb | 25 | Moderate |
| Mar | 26 | Moderate |
| Apr | 24 | Moderate |
| May | 21 | Moderate |
| Jun | 33 | Moderate |
| Jul | 31 | Moderate |
| Aug | 25 | Moderate |
| Sep | 26 | Moderate |
| Oct | 22 | Moderate |
| Nov | 21 | Moderate |
| Dec | 26 | Moderate |
Where is Mexicali?
Mexicali sits at 32.6°N, 115.5°W, 4 m above sea level, in Mexico. The nearest listed city is Calexico, 7.0 km away.
Topography around Mexicali
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Mexicali.
Within 3 km, the terrain around Mexicali has only modest variations in elevation — a maximum elevation change of 22 m around an average of 5 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 125 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,923 m.
The land around Mexicali is covered by artificial surfaces (91%) within 3 km, cropland (40%), bare terrain (32%) and artificial surfaces (21%) within 16 km, and bare terrain (57%) 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 Mexicali (32.6278°, -115.4545°, elevation 4 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.