Petatlán in Summer
In summer (June, July and August), Petatlán sees average daytime highs around 30°C and overnight lows near 24°C, with 674 mm of rain over about 58 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 30°C. The sky is clear or mostly clear about 11% of the time across summer, and the air most often feels oppressive.
Summer is Petatlán's weakest season of the year to visit on our travel score. For the whole year in context, see Petatlán's year-round climate.
- Avg daytime high
- 30°C
- 2nd-warmest season
- Avg overnight low
- 24°C
- Rainfall
- 674 mm
- 58 wet days
- Avg wind
- 6 km/h
- Travel score
- 3.8
- weakest season of the year
- Months
- Jun · Jul · Aug
Temperature in Petatlán in Summer
Across summer, daytime highs hold fairly steady around 30°C.
A typical summer day in Petatlán reaches about 30°C and drops to 24°C overnight. The warmest of the three months is June, the coolest June.
How summer really feels in Petatlán
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.
Petatlán 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° / 20° | 9 | 1 | 11.1 | 7.3 |
| Feb | 29° / 20° | 5 | 0.4 | 11.4 | 7.3 |
| Mar | 29° / 20° | 6 | 0.4 | 11.9 | 7.1 |
| Apr | 30° / 21° | 0 | 0 | 12.4 | 6.5 |
| May | 31° / 23° | 24 | 3.7 | 12.8 | 5.6 |
| Jun | 30° / 24° | 220 | 18.1 | 13 | 4.0 |
| Jul | 30° / 24° | 198 | 19.1 | 12.9 | 3.8 |
| Aug | 30° / 24° | 256 | 21 | 12.6 | 3.7 |
| Sep | 29° / 24° | 338 | 23.5 | 12.1 | 3.5 |
| Oct | 29° / 23° | 212 | 20.3 | 11.6 | 4.1 |
| Nov | 29° / 22° | 35 | 5.9 | 11.2 | 6.2 |
| Dec | 29° / 21° | 8 | 1.7 | 11 | 7.1 |
Cloud cover in Summer
The sky is clear or mostly clear about 11% of the time across summer.
Chance of precipitation in Summer
Petatlán gets around 674 mm of rain over 58 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 6 km/h across summer.
Sunrise & sunset in Summer
Daylight runs from about 13 hours 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 5.5 kWh/m².
Hazard calendar for Petatlán
In summer, Petatlán overlaps its pacific hurricane and monsoon season. The full year is below, with each hazard's peak months called out.
Petatlán sits in the eastern Pacific hurricane zone; the season peaks August–September.
Petatlán's monsoon runs June–October, when most of the year's rain falls.
Is summer a good time to visit Petatlán?
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 Petatlán.
What to pack for Petatlán in Summer
From summer's temperature range, rain chance, sun and wind — what's worth putting in the bag.
In summer, Petatlán sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 58 days see rain.
Sea temperature near Petatlán 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 21 km away) is warmest in August at about 30°C and coldest in March near 27°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) | 28 | 28 | 27 | 27 | 28 | 30 | 30 | 30 | 30 | 30 | 29 | 29 |
| Comfort | Tropical | Warm | Warm | Warm | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical | Tropical |
| Sea temperature (°C) | Comfort | |
|---|---|---|
| Jan | 28 | Tropical |
| Feb | 28 | Warm |
| Mar | 27 | Warm |
| Apr | 27 | Warm |
| May | 28 | Tropical |
| Jun | 30 | Tropical |
| Jul | 30 | Tropical |
| Aug | 30 | Tropical |
| Sep | 30 | Tropical |
| Oct | 30 | Tropical |
| Nov | 29 | Tropical |
| Dec | 29 | Tropical |
UV index in Petatlán in Summer
Clear-sky midday UV across summer averages around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.
Under clear skies, the midday UV index in Petatlán peaks around March 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 13 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) | 9 | 11 | 13 | 13 | 12 | 12 | 11 | 11 | 11 | 8 | 8 | 7 |
| Level | Very high | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Extreme | Very high | Very high | High |
| UV index (midday) | Level | |
|---|---|---|
| Jan | 9 | Very high |
| Feb | 11 | Extreme |
| Mar | 13 | Extreme |
| Apr | 13 | Extreme |
| May | 12 | Extreme |
| Jun | 12 | Extreme |
| Jul | 11 | Extreme |
| Aug | 11 | Extreme |
| Sep | 11 | Extreme |
| Oct | 8 | Very high |
| Nov | 8 | Very high |
| Dec | 7 | High |
Air quality in Petatlán 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 Petatlán is worst in May — around 28 µg/m³ PM2.5 (moderate), about 8.1× the cleanest month (February, 3 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) | 5 | 3 | 5 | 12 | 28 | 11 | 13 | 9 | 7 | 6 | 5 | 5 |
| Level | Good | Good | Good | Good | Moderate | Good | Moderate | Good | Good | Good | Good | Good |
| PM2.5 (µg/m³) | Level | |
|---|---|---|
| Jan | 5 | Good |
| Feb | 3 | Good |
| Mar | 5 | Good |
| Apr | 12 | Good |
| May | 28 | Moderate |
| Jun | 11 | Good |
| Jul | 13 | Moderate |
| Aug | 9 | Good |
| Sep | 7 | Good |
| Oct | 6 | Good |
| Nov | 5 | Good |
| Dec | 5 | Good |
Where is Petatlán?
Petatlán sits at 17.5°N, 101.3°W, 39 m above sea level, in Mexico. The nearest listed city is Zihuatanejo, 32 km away.
Topography around Petatlán
How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Petatlán.
Within 3 km, the terrain around Petatlán has only modest variations in elevation — a maximum elevation change of 155 m around an average of 39 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,493 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,839 m.
The land around Petatlán is covered by trees (43%) and grassland (26%) within 3 km, trees (54%) within 16 km, and trees (56%) and water (33%) 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 Petatlán (17.5377°, -101.268°, elevation 39 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.