Petatlán weather in July

In July, Petatlán sees average daytime highs of 30°C and overnight lows near 24°C, with 198 mm of rain across 19.1 wet days and about 12.9 hours of daylight. It is the 3rd-warmest and 5th-wettest month of the year here.

Day-to-day highs hold fairly steady near 30°C through the month. The sky is clear or mostly clear about 9% of the time in July, and the air most often feels oppressive.

Daylight stretches from about 13 hours at the start of July to 12 h 48 min by month's end. Set against the rest of the year, July is Petatlán's 10th-clearest and 9th-windiest month. For the whole year in context, see Petatlán's year-round climate.

Daytime high
30°
3rd warmest
Overnight low
24°
12th coldest
Rainfall
198 mm
19.1 wet days
Daylight
13 hours
6:22 AM – 7:19 PM
Cloud cover
77%
10th clearest
Wind
5 km/h
9th windiest
Solar energy
5.67 kWh/m²
Travel score
3.8
out of 10

Petatlán is municipal seat of Petatlán, State of Guerrero, Mexico.

Density
10/km²
people per km²
Founded
1550

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in July

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 30°C through the month.

A typical July day in Petatlán reaches about 30°C in the afternoon and slips back to 24°C overnight — a 6°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°C. Set against its neighbours, July runs on par with June and on par with August.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13024
23024
33024
43024
53024
63024
73024
83024
93024
103024
113024
123024
133024
143024
153024
163024
173024
183024
193024
203024
213024
223024
233024
243024
253024
263024
273024
283024
293024
303024
313024

How July really feels in Petatlán

Once humidity and wind are folded in, July averages 31 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
31
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

The story in July is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Petatlán weather by month

How July compares with the rest of the year at a glance. July is the 3rd-warmest and 5th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°9111.17.3
Feb29° / 20°50.411.47.3
Mar29° / 20°60.411.97.1
Apr30° / 21°0012.46.5
May31° / 23°243.712.85.6
Jun30° / 24°22018.1134.0
Jul30° / 24°19819.112.93.8
Aug30° / 24°2562112.63.7
Sep29° / 24°33823.512.13.5
Oct29° / 23°21220.311.64.1
Nov29° / 22°355.911.26.2
Dec29° / 21°81.7117.1

Cloud cover in July

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in July.

Beyond those clear spells, partly cloudy skies cover about 12% of July, with mostly cloudy or overcast conditions the remaining 79%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32179
42179
52278
62278
72278
82179
92278
102278
112278
122179
132179
142179
152179
162080
172080
182080
191981
202080
212080
222080
232080
242080
252179
262278
272278
282278
292377
302377
312377

Chance of precipitation in July

Any precipitation

Petatlán gets around 198 mm of rain over 19.1 wet days in July. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 63% and peaks near 66% on the wettest days.

0%20%40%60%80%151015202531
Rain chance (%)
166
266
365
465
565
664
764
863
963
1063
1163
1263
1363
1462
1562
1662
1762
1861
1961
2061
2161
2260
2361
2461
2561
2661
2762
2862
2962
3062
3163

Humidity in July

DryComfortableHumidMuggyOppressiveMiserable

Most of July feels oppressive — the stacked bands show each day's mix of comfort levels, read off the dew point.

By dew point, July lands in the oppressive band about 78% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Muggy (%)Oppressive (%)Miserable (%)
118217
218217
318217
408317
508317
608218
708218
808218
908119
1008119
1108020
1208020
1307921
1407921
1507822
1607822
1717623
1817623
1917623
2017524
2117524
2217524
2317524
2407525
2507525
2607525
2707426
2807327
2907327
3007228
3107228

Wind in July

Winds average 5 km/h in July.

Across July, daily wind ranges from about 5 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202531
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in July

DaylightNight

Daylight runs from about 13 hours at the start of July to 12 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 12 minutes over July. Sunrise moves from 6:17 AM to 6:27 AM, and sunset from 7:20 PM to 7:15 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.06:177:20
213.06:187:20
313.06:187:20
413.06:187:20
513.06:187:20
613.06:197:20
713.06:197:20
813.06:197:20
913.06:207:20
1013.06:207:20
1113.06:207:20
1213.06:217:20
1313.06:217:20
1413.06:217:20
1513.06:227:19
1613.06:227:19
1712.96:227:19
1812.96:237:19
1912.96:237:19
2012.96:237:19
2112.96:247:18
2212.96:247:18
2312.96:247:18
2412.96:257:18
2512.96:257:17
2612.96:257:17
2712.96:267:17
2812.86:267:17
2912.86:267:16
3012.86:277:16
3112.86:277:15

Solar energy in July

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in July, about 5.67 kWh/m².

For context, solar energy here swings from a low near 4.82 kWh/m² to a high of 7.41 kWh/m² in April across the year — July's 5.67 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.5Bright
45.5Bright
55.5Bright
65.5Bright
75.5Bright
85.5Bright
95.6Bright
105.6Bright
115.6Bright
125.6Bright
135.6Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.7Bright
225.7Bright
235.7Bright
245.8Bright
255.8Bright
265.8Bright
275.8Bright
285.8Bright
295.8Bright
305.7Bright
315.7Bright
Planning a trip in July

Hazard calendar for Petatlán

In seasonPeak

In July, Petatlán sits inside 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.

Pacific hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is July a good time to visit Petatlán?

Our two travel scores rate July for general sightseeing and for beach or pool weather — 0 (poor) to 10 (ideal).

3.8
Sightseeing
10th-best month of the year
5.2
Beach & pool
10th-best month of the year

July is a weaker month for outdoor sightseeing in Petatlán.

What to pack for Petatlán in July

From July's temperature range, rain chance, sun and wind — what's worth putting in the bag.

In July, Petatlán sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 19 days see rain.

light clothesrain gearsun protection

Sea temperature near Petatlán in July

The nearest coast averages about 30°C in July — 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.

26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan28Tropical
Feb28Warm
Mar27Warm
Apr27Warm
May28Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct30Tropical
Nov29Tropical
Dec29Tropical

UV index in Petatlán in July

LowModerateHighVery highExtreme

Clear-sky midday UV in July peaks 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highMar 23UV 13Dec 13UV 7
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May12Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep11Extreme
Oct8Very high
Nov8Very high
Dec7High

Air quality in Petatlán in July

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where July 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).

0102030JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1625 µg/m³Feb 154 µg/m³
PM2.5 (µg/m³)Level
Jan5Good
Feb3Good
Mar5Good
Apr12Good
May28Moderate
Jun11Good
Jul13Moderate
Aug9Good
Sep7Good
Oct6Good
Nov5Good
Dec5Good
Location & terrain

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.

3 km
155 m
16 km
1,493 m
80 km
2,839 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwaterwetlandmangroves
July weather nearby: Zihuatanejo 32 km · Técpan de Galeana 76 km · Atoyac de Álvarez 96 km · Ciudad Lázaro Cárdenas 109 km · Ciudad Altamirano 111 km · Las Guacamayas 113 km · La Orilla 114 km · Huetamo de Núñez 127 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
Catholic 78%no religion 11%other Evangelical Churches 8%Jehovah Witness 1%

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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. UV index is derived from CAMS (Copernicus Atmosphere Monitoring Service) clear-sky UV data — contains modified Copernicus Atmosphere Monitoring Service information. Monthly air-quality (PM2.5) seasonality is from the CAMS EAC4 reanalysis (Copernicus Atmosphere Monitoring Service), scaled to the WHO annual mean where available. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).