Compostela in Summer
In summer (June, July and August), Compostela sees average daytime highs around 29°C and overnight lows near 22°C, with 959 mm of rain over about 79 wet days across the season. It is the warmest season of the year and the wettest season of the year.
Across summer, daytime highs hold fairly steady around 29°C. The sky is clear or mostly clear about 8% of the time across summer, and the air most often feels oppressive.
Summer is Compostela's weakest season of the year to visit on our travel score. For the whole year in context, see Compostela's year-round climate.
- Avg daytime high
- 29°C
- warmest season of the year
- Avg overnight low
- 22°C
- Rainfall
- 959 mm
- 79 wet days
- Avg wind
- 5 km/h
- Travel score
- 3.5
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Compostela in Summer
Across summer, daytime highs hold fairly steady around 29°C.
A typical summer day in Compostela reaches about 29°C and drops to 22°C overnight. The warmest of the three months is June, the coolest June.
Compostela 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 | 25° / 14° | 22 | 2.4 | 10.9 | 8.3 |
| Feb | 26° / 15° | 19 | 1.8 | 11.3 | 8.4 |
| Mar | 27° / 15° | 8 | 1.3 | 11.8 | 8.4 |
| Apr | 28° / 16° | 3 | 0.8 | 12.5 | 7.7 |
| May | 29° / 18° | 15 | 3.6 | 13 | 6.5 |
| Jun | 29° / 21° | 198 | 18.8 | 13.3 | 4.4 |
| Jul | 28° / 22° | 344 | 29.6 | 13.2 | 3.1 |
| Aug | 28° / 22° | 417 | 30.4 | 12.7 | 3.0 |
| Sep | 28° / 22° | 361 | 29.1 | 12.1 | 3.1 |
| Oct | 28° / 21° | 133 | 18.8 | 11.5 | 4.7 |
| Nov | 27° / 18° | 22 | 4.5 | 11 | 7.6 |
| Dec | 26° / 15° | 21 | 2.1 | 10.7 | 8.3 |
Cloud cover in Summer
The sky is clear or mostly clear about 8% of the time across summer.
Chance of precipitation in Summer
Compostela gets around 959 mm of rain over 79 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 5 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 5.3 kWh/m².
Hazard calendar for Compostela
In summer, Compostela overlaps its pacific hurricane and monsoon season. The full year is below, with each hazard's peak months called out.
Compostela sits in the eastern Pacific hurricane zone; the season peaks August–September.
Compostela's monsoon runs June–September, when most of the year's rain falls.
Is summer a good time to visit Compostela?
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 Compostela.
What to pack for Compostela in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Compostela sees daytime highs around 29°C and nights near 22°C. Pack light clothes and rain gear. Worth having: sun protection. About 79 days see rain.
Sea temperature near Compostela in Summer
The nearest coast averages about 30°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 51 km away) is warmest in August at about 30°C and coldest in March 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) | 25 | 25 | 24 | 25 | 27 | 28 | 30 | 30 | 30 | 30 | 28 | 26 |
| Comfort | Warm | Warm | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Warm |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 25 | Warm |
| Feb | 25 | Warm |
| Mar | 24 | Warm |
| Apr | 25 | Warm |
| May | 27 | Warm |
| Jun | 28 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 28 | Tropical |
| Dec | 26 | Warm |
UV index in Compostela 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 Compostela peaks around May 11 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 | 12 | 13 | 13 | 11 | 12 | 12 | 12 | 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 | 12 | Extreme |
| Apr | 13 | Extreme |
| May | 13 | Extreme |
| Jun | 11 | Extreme |
| Jul | 12 | Extreme |
| Aug | 12 | Extreme |
| Sep | 12 | Extreme |
| Oct | 10 | Very high |
| Nov | 7 | High |
| Dec | 6 | High |
Air quality in Compostela 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 Compostela is worst in May — around 24 µg/m³ PM2.5 (moderate), about 3.2× the cleanest month (February, 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 | 8 | 8 | 11 | 24 | 15 | 10 | 10 | 9 | 9 | 8 | 8 |
| Level | Good | Good | Good | Good | Moderate | Moderate | Good | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 8 | Good |
| Feb | 8 | Good |
| Mar | 8 | Good |
| Apr | 11 | Good |
| May | 24 | Moderate |
| Jun | 15 | Moderate |
| Jul | 10 | Good |
| Aug | 10 | Good |
| Sep | 9 | Good |
| Oct | 9 | Good |
| Nov | 8 | Good |
| Dec | 8 | Good |
Where is Compostela?
Compostela sits at 21.2°N, 104.9°W, 855 m above sea level, in Mexico. The nearest listed city is Xalisco, 23 km away.
Topography around Compostela
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Compostela.
Within 3 km, the terrain around Compostela has only modest variations in elevation — a maximum elevation change of 115 m around an average of 865 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,712 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,631 m.
The land around Compostela is covered by grassland (40%) and cropland (29%) within 3 km, trees (68%) within 16 km, and trees (63%) 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 Compostela (21.2373°, -104.9006°, elevation 855 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.