Petatlán weather in October

In October, Petatlán sees average daytime highs of 29°C and overnight lows near 23°C, with 212 mm of rain across 20.3 wet days and about 11.6 hours of daylight. It is the 7th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 29°C through the month. The sky is clear or mostly clear about 21% of the time in October, and the air most often feels oppressive.

Daylight stretches from about 11 h 48 min at the start of October to 11 h 24 min by month's end. Set against the rest of the year, October is Petatlán's 8th-clearest and 9th-windiest month. For the whole year in context, see Petatlán's year-round climate.

Daytime high
29°
7th warmest
Overnight low
23°
8th coldest
Rainfall
212 mm
20.3 wet days
Daylight
11 h 36 min
6:42 AM – 6:18 PM
Cloud cover
66%
8th clearest
Wind
5 km/h
9th windiest
Solar energy
4.94 kWh/m²
Travel score
4.1
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 October

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical October day in Petatlán reaches about 29°C in the afternoon and slips back to 23°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 30°C. Set against its neighbours, October runs on par with September and on par with November.

20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12924
22924
32924
42924
52924
62924
72924
82924
92924
102924
112924
122924
132924
142924
152924
162924
172924
182923
192923
202923
212923
222923
232923
242923
252923
262923
272923
282923
292923
302923
312923

How October really feels in Petatlán

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

Petatlán weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 4th-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 October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in October.

Beyond those clear spells, partly cloudy skies cover about 19% of October, with mostly cloudy or overcast conditions the remaining 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
12179
22179
32476
42476
52674
62872
72872
83169
93169
103367
113466
123466
133664
143664
153664
163862
173862
184060
194258
204357
214456
224654
234852
244951
255149
265347
275446
285644
295842
306040
316139

Chance of precipitation in October

Any precipitation

Petatlán gets around 212 mm of rain over 20.3 wet days in October. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 65% and peaks near 77% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202531
Rain chance (%)
177
277
377
476
576
675
774
873
973
1072
1171
1271
1370
1469
1568
1668
1767
1866
1965
2063
2162
2261
2359
2457
2556
2654
2752
2850
2948
3046
3143

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October 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 (%)
107723
207723
307723
407723
507723
607723
707624
807624
907624
1007624
1107624
1207624
1307624
1407723
1507723
1617623
1717623
1817722
1917722
2017821
2117920
2227820
2327919
2428018
2528117
2628216
2738215
2838314
2938413
3038413
3148412

Wind in October

Winds average 5 km/h in October.

Across October, 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
25calm
35calm
45calm
55calm
65calm
75calm
85calm
95calm
105calm
115calm
125calm
135calm
145calm
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm
315calm

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 48 min at the start of October to 11 h 24 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 24 minutes over October. Sunrise moves from 6:39 AM to 6:48 AM, and sunset from 6:29 PM to 6:10 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.86:396:29
211.86:396:29
311.86:396:28
411.86:396:27
511.86:406:26
611.86:406:25
711.76:406:25
811.76:406:24
911.76:406:23
1011.76:416:22
1111.76:416:21
1211.76:416:21
1311.66:416:20
1411.66:426:19
1511.66:426:19
1611.66:426:18
1711.66:436:17
1811.66:436:17
1911.56:436:16
2011.56:436:15
2111.56:446:15
2211.56:446:14
2311.56:446:14
2411.56:456:13
2511.56:456:13
2611.46:466:12
2711.46:466:12
2811.46:466:11
2911.46:476:11
3011.46:476:10
3111.46:486:10

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.94 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 — October's 4.94 kWh/m² sits near the bottom.

0246151015202531
Solar energy (kWh/m²)Level
14.7Bright
24.8Bright
34.8Bright
44.8Bright
54.8Bright
64.8Bright
74.8Bright
84.8Bright
94.8Bright
104.8Bright
114.8Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.1Bright
285.1Bright
295.1Bright
305.1Bright
315.1Bright
Planning a trip in October

Hazard calendar for Petatlán

In seasonPeak

In October, 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 October a good time to visit Petatlán?

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

4.1
Sightseeing
8th-best month of the year
5.4
Beach & pool
9th-best month of the year

October is a reasonable time to visit Petatlán for sightseeing.

What to pack for Petatlán in October

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

In October, Petatlán sees daytime highs around 29°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

Sea temperature near Petatlán in October

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

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 8 (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 October

GoodModeratePoorUnhealthyVery unhealthy

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