Chapala in Summer
In summer (June, July and August), Chapala sees average daytime highs around 27°C and overnight lows near 17°C, with 445 mm of rain over about 67 wet days across the season. It is the 2nd-warmest season and the wettest season of the year.
Over the season highs ease from about 30°C in early June to 26°C by late August. The sky is clear or mostly clear about 13% of the time across summer, and the air most often feels humid.
Summer is Chapala's weakest season of the year to visit on our travel score. For the whole year in context, see Chapala's year-round climate.
- Avg daytime high
- 27°C
- 2nd-warmest season
- Avg overnight low
- 17°C
- Rainfall
- 445 mm
- 67 wet days
- Avg wind
- 4 km/h
- Travel score
- 4.5
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Chapala in Summer
Over the season highs ease from about 30°C in early June to 26°C by late August.
A typical summer day in Chapala reaches about 27°C and drops to 17°C overnight. The warmest of the three months is June, the coolest August.
Chapala 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 | 24° / 10° | 17 | 1.7 | 10.9 | 8.6 |
| Feb | 26° / 11° | 11 | 1.6 | 11.3 | 8.5 |
| Mar | 28° / 13° | 6 | 1 | 11.9 | 7.9 |
| Apr | 30° / 15° | 3 | 0.9 | 12.5 | 6.2 |
| May | 31° / 16° | 16 | 4.2 | 12.9 | 5.3 |
| Jun | 29° / 18° | 116 | 18 | 13.2 | 4.6 |
| Jul | 26° / 17° | 173 | 24.7 | 13.1 | 4.4 |
| Aug | 26° / 17° | 157 | 23.9 | 12.7 | 4.5 |
| Sep | 26° / 17° | 138 | 19.8 | 12.1 | 5.0 |
| Oct | 26° / 15° | 45 | 8.3 | 11.5 | 7.0 |
| Nov | 25° / 13° | 12 | 2.1 | 11 | 8.5 |
| Dec | 24° / 11° | 6 | 1 | 10.8 | 8.7 |
Cloud cover in Summer
The sky is clear or mostly clear about 13% of the time across summer.
Chance of precipitation in Summer
Chapala gets around 445 mm of rain over 67 wet days across summer. The line is the day-by-day chance of measurable precipitation.
Humidity in Summer
Most of summer feels humid — the stacked bands show each day's mix of comfort levels, read off the dew point.
Wind in Summer
Winds average 4 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 h 06 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 5.6 kWh/m².
Hazard calendar for Chapala
In summer, Chapala overlaps its pacific hurricane and rainy season season. The full year is below, with each hazard's peak months called out.
Chapala sits in the eastern Pacific hurricane zone; the season peaks August–September.
Chapala's rainy season runs June–September, when most of the year's rain falls.
Is summer a good time to visit Chapala?
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 reasonable time to visit Chapala for sightseeing.
What to pack for Chapala in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Chapala sees daytime highs around 27°C and nights near 17°C. Pack light clothes and rain gear. Worth having: sun protection. About 67 days see rain.
UV index in Chapala in Summer
Clear-sky midday UV across summer averages around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Chapala peaks around May 13 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 7 (very 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) | 8 | 11 | 13 | 13 | 14 | 13 | 12 | 13 | 12 | 10 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 8 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 14 | Extreme |
| Jun | 13 | Extreme |
| Jul | 12 | Extreme |
| Aug | 13 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Chapala 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 Chapala is worst in May — around 44 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (July, 14 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) | 20 | 18 | 20 | 33 | 44 | 17 | 14 | 15 | 17 | 17 | 18 | 21 |
| Level | Moderate | Moderate | Moderate | Moderate | Poor | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate | Moderate |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 20 | Moderate |
| Feb | 18 | Moderate |
| Mar | 20 | Moderate |
| Apr | 33 | Moderate |
| May | 44 | Poor |
| Jun | 17 | Moderate |
| Jul | 14 | Moderate |
| Aug | 15 | Moderate |
| Sep | 17 | Moderate |
| Oct | 17 | Moderate |
| Nov | 18 | Moderate |
| Dec | 21 | Moderate |
Where is Chapala?
Chapala sits at 20.3°N, 103.2°W, 1,561 m above sea level, in Mexico. The nearest listed city is San José del Castillo, 25 km away.
Topography around Chapala
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Chapala.
Within 3 km, the terrain around Chapala has only modest variations in elevation — a maximum elevation change of 211 m around an average of 1,544 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 957 m; within 80 km, very significant variations in elevation — a maximum elevation change of 2,137 m.
The land around Chapala is covered by water (52%) within 3 km, water (50%) and trees (20%) within 16 km, and trees (37%) and cropland (25%) 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 Chapala (20.2925°, -103.1896°, elevation 1,561 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.