Piedras Negras weather in October

In October, Piedras Negras sees average daytime highs of 29°C and overnight lows near 18°C, with 60 mm of rain across 6.5 wet days and about 11.3 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 32°C in the first days to 27°C by the end. The sky is clear or mostly clear about 57% of the time in October, and the air most often feels dry.

Daylight stretches from about 11 h 42 min at the start of October to 10 h 54 min by month's end. Set against the rest of the year, October is Piedras Negras's 1st-clearest and 7th-windiest month. For the whole year in context, see Piedras Negras's year-round climate.

Daytime high
29°
7th warmest
Overnight low
18°
7th coldest
Rainfall
60 mm
6.5 wet days
Daylight
11 h 18 min
6:48 AM – 6:06 PM
Cloud cover
38%
1st clearest
Wind
13 km/h
7th windiest
Solar energy
4.32 kWh/m²
Travel score
6.2
out of 10

Piedras Negras is municipal seat of Piedras Negras, State of Coahuila, Mexico.

Founded
1850

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

Temperature in October

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 32°C in the first days to 27°C by the end.

A typical October day in Piedras Negras reaches about 29°C in the afternoon and slips back to 18°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 34°C. Set against its neighbours, October runs about 5°C cooler than September and about 6°C warmer than November.

10°20°30°40°151015202531
Avg high (°C)Avg low (°C)
13221
23221
33220
43120
53120
63120
73120
83120
93119
103019
113019
123019
133019
143018
152918
162918
172918
182918
192917
202917
212817
222817
232817
242816
252716
262716
272716
282716
292715
302615
312615

How October really feels in Piedras Negras

Once humidity and wind are folded in, October averages 1 day 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
1
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.

Piedras Negras weather by month

How October compares with the rest of the year at a glance. October is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 254.410.47.1
Feb22° / 10°274.5117.6
Mar26° / 14°435.611.87.5
Apr30° / 18°486.112.75.5
May33° / 22°748.313.43.5
Jun36° / 25°466.113.82.1
Jul37° / 26°505.913.61.6
Aug37° / 26°464.6131.6
Sep34° / 23°798.312.23.5
Oct29° / 18°606.511.36.2
Nov23° / 12°364.810.67.8
Dec19° / 274.510.27.1

Cloud cover in October

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 57% of the time in October, the clearest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of October, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
17723
27723
37723
47525
57525
67426
77426
87327
97327
107228
117228
127129
137030
146931
156931
166832
176832
186832
196832
206733
216733
226733
236733
246832
256733
266733
276733
286634
296733
306634
316535

Chance of precipitation in October

Any precipitation

Piedras Negras gets around 60 mm of rain over 6.5 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 21% and peaks near 24% on the wettest days.

0%10%20%30%151015202531
Rain chance (%)
122
222
323
423
523
623
724
824
924
1024
1124
1224
1324
1423
1523
1622
1722
1821
1921
2020
2120
2219
2319
2419
2519
2618
2718
2818
2918
3018
3118

Humidity in October

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, October lands in the dry band about 33% of days. Sticky, muggy-or-worse air turns up on roughly 32% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
12115182817
22215182817
32215182816
42315182816
52315182815
62415182815
72415182814
82515192814
92515192813
102615192712
112716192711
122716202611
132816202510
142917202510
15301721249
16311721238
17321721228
18331721227
19341721217
20361721206
21381621195
22391621195
23401621185
24411621184
25431620174
26441620174
27451619173
28461618163
29471618163
30481717153
31491716152

Wind in October

Winds average 13 km/h in October.

Across October, daily wind ranges from about 12 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
112light breeze
212light breeze
313light breeze
413light breeze
513light breeze
613light breeze
713light breeze
813light breeze
913light breeze
1013light breeze
1113light breeze
1213light breeze
1313light breeze
1413light breeze
1513light breeze
1613light breeze
1713light breeze
1813light breeze
1913light breeze
2013light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2813light breeze
2913light breeze
3013light breeze
3113light breeze

Sunrise & sunset in October

DaylightNight

Daylight runs from about 11 h 42 min at the start of October to 10 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 48 minutes over October. Sunrise moves from 6:39 AM to 6:59 AM, and sunset from 6:23 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.76:396:23
211.76:406:22
311.76:406:21
411.66:416:19
511.66:416:18
611.66:426:17
711.66:436:16
811.56:436:15
911.56:446:14
1011.56:446:13
1111.46:456:11
1211.46:466:10
1311.46:466:09
1411.46:476:08
1511.36:486:07
1611.36:486:06
1711.36:496:05
1811.26:496:04
1911.26:506:03
2011.26:516:02
2111.26:516:01
2211.16:526:00
2311.16:535:59
2411.16:545:58
2511.16:545:58
2611.06:555:57
2711.06:565:56
2811.06:565:55
2911.06:575:54
3010.96:585:53
3110.96:595:53

Solar energy in October

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in October, about 4.32 kWh/m².

For context, solar energy here swings from a low near 3.04 kWh/m² to a high of 6.86 kWh/m² in July across the year — October's 4.32 kWh/m² falls in the middle.

024151015202531
Solar energy (kWh/m²)Level
15.0Bright
24.9Bright
34.9Bright
44.8Bright
54.8Bright
64.7Bright
74.7Bright
84.6Bright
94.6Bright
104.5Bright
114.5Bright
124.4Bright
134.4Bright
144.3Bright
154.3Bright
164.3Bright
174.3Bright
184.2Bright
194.2Bright
204.2Bright
214.1Bright
224.1Bright
234.1Bright
244.0Bright
254.0Bright
264.0Moderate
273.9Moderate
283.9Moderate
293.8Moderate
303.8Moderate
313.8Moderate
Planning a trip in October

Is October a good time to visit Piedras Negras?

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

6.2
Sightseeing
6th-best month of the year
7.6
Beach & pool
1st-best month of the year

October is a reasonable time to visit Piedras Negras for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Piedras Negras in October

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

In October, Piedras Negras sees daytime highs around 29°C and nights near 18°C. Pack light clothes. About 7 days see rain.

light clothes

UV index in Piedras Negras in October

LowModerateHighVery highExtreme

Clear-sky midday UV in October peaks around 7 — enough to warrant sun protection. The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Piedras Negras peaks around July 14 at about 11 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

The index reaches 3 or more — the level where the WHO recommends sun protection — every month of the year.

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 14UV 11Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb6High
Mar7Very high
Apr10Very high
May10Extreme
Jun11Extreme
Jul11Extreme
Aug11Extreme
Sep9Very high
Oct7High
Nov5Moderate
Dec4Moderate

Air quality in Piedras Negras 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 Piedras Negras is worst in July — around 18 µg/m³ PM2.5 (moderate), about 2.1× the cleanest month (February, 8 µg/m³).

Modeled monthly averages (CAMS reanalysis, 2015–2024).

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1418 µg/m³Feb 178 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb8Good
Mar9Good
Apr10Good
May16Moderate
Jun16Moderate
Jul18Moderate
Aug13Moderate
Sep12Good
Oct9Good
Nov10Good
Dec11Good
Location & terrain

Where is Piedras Negras?

Piedras Negras sits at 28.7°N, 100.5°W, 223 m above sea level, in Mexico. The nearest listed city is Eagle Pass, 3.0 km away.

Topography around Piedras Negras

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of Piedras Negras.

Within 3 km, the terrain around Piedras Negras has only modest variations in elevation — a maximum elevation change of 52 m around an average of 227 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 110 m; within 80 km, significant variations in elevation — a maximum elevation change of 586 m.

The land around Piedras Negras is covered by artificial surfaces (60%) within 3 km, shrubs (70%) within 16 km, and shrubs (89%) within 80 km.

3 km
52 m
16 km
110 m
80 km
586 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
October weather nearby: Eagle Pass 3.0 km · Nava 39 km · Allende 51 km · Ciudad Acuña 81 km · Del Rio 82 km · Uvalde 91 km · Nueva Rosita 109 km · Sabinas 110 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 Piedras Negras (28.7001°, -100.5235°, elevation 223 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. 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).