Petatlán weather in August

In August, Petatlán sees average daytime highs of 30°C and overnight lows near 24°C, with 256 mm of rain across 21 wet days and about 12.6 hours of daylight. It is the 5th-warmest and 2nd-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 7% of the time in August, and the air most often feels oppressive.

Daylight stretches from about 12 h 48 min at the start of August to 12 h 24 min by month's end. Set against the rest of the year, August is Petatlán's 11th-clearest and 7th-windiest month. For the whole year in context, see Petatlán's year-round climate.

Daytime high
30°
5th warmest
Overnight low
24°
12th coldest
Rainfall
256 mm
21 wet days
Daylight
12 h 36 min
6:31 AM – 7:07 PM
Cloud cover
80%
11th clearest
Wind
6 km/h
7th windiest
Solar energy
5.4 kWh/m²
Travel score
3.7
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 August

Average highAverage lowShaded bands: 10–90% of days

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

A typical August day in Petatlán reaches about 30°C in the afternoon and slips back to 24°C overnight — a 5°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, August runs on par with July and on par with September.

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
242924
252924
262924
272924
282924
292924
302924
312924

How August really feels in Petatlán

Once humidity and wind are folded in, August 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 August is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Petatlán weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 2nd-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 August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 7% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 11% of August, with mostly cloudy or overcast conditions the remaining 82%.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12377
22377
32377
42377
52278
62278
72179
82080
92080
102080
111981
121882
131882
141783
151783
161783
171783
181585
191585
201585
211585
221585
231585
241585
251585
261585
271585
281486
291486
301486
311486

Chance of precipitation in August

Any precipitation

Petatlán gets around 256 mm of rain over 21 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 67% and peaks near 75% on the wettest days. The odds climb toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
163
264
364
464
565
665
765
865
965
1065
1166
1266
1366
1466
1566
1666
1766
1866
1966
2067
2167
2268
2369
2470
2570
2671
2772
2873
2973
3074
3175

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the oppressive band about 72% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202531
Oppressive (%)Miserable (%)
17129
27129
37129
47030
57030
67030
77030
87030
97030
107030
117030
127030
137030
147030
157129
167129
177129
187228
197228
207228
217327
227327
237426
247426
257525
267525
277624
287723
297822
307921
317921

Wind in August

Winds average 6 km/h in August.

Across August, 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
15calm
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm
316calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 12 h 48 min at the start of August to 12 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over August. Sunrise moves from 6:27 AM to 6:34 AM, and sunset from 7:15 PM to 6:56 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
112.86:277:15
212.86:287:15
312.86:287:14
412.86:287:14
512.76:287:13
612.76:297:13
712.76:297:12
812.76:297:12
912.76:307:11
1012.76:307:11
1112.76:307:10
1212.76:307:10
1312.66:317:09
1412.66:317:08
1512.66:317:08
1612.66:317:07
1712.66:327:06
1812.66:327:06
1912.66:327:05
2012.56:327:04
2112.56:327:04
2212.56:337:03
2312.56:337:02
2412.56:337:01
2512.56:337:01
2612.46:337:00
2712.46:346:59
2812.46:346:58
2912.46:346:58
3012.46:346:57
3112.46:346:56

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.4 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 — August's 5.4 kWh/m² falls in the middle.

0246151015202531
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.7Bright
45.7Bright
55.6Bright
65.6Bright
75.6Bright
85.6Bright
95.5Bright
105.5Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in August

Hazard calendar for Petatlán

In seasonPeak

In August, 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 August a good time to visit Petatlán?

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

3.7
Sightseeing
11th-best month of the year
5.0
Beach & pool
11th-best month of the year

August is a weaker month for outdoor sightseeing in Petatlán.

What to pack for Petatlán in August

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

In August, Petatlán sees daytime highs around 30°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

Sea temperature near Petatlán in August

The nearest coast averages about 30°C in August — 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 August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 August

GoodModeratePoorUnhealthyVery unhealthy

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