Ciudad Valles weather in September

In September, Ciudad Valles sees average daytime highs of 32°C and overnight lows near 23°C, with 226 mm of rain across 20.8 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 31°C by the end. The sky is clear or mostly clear about 31% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Ciudad Valles's 12th-clearest and 9th-windiest month. For the whole year in context, see Ciudad Valles's year-round climate.

Daytime high
32°
6th warmest
Overnight low
23°
8th coldest
Rainfall
226 mm
20.8 wet days
Daylight
12 h 06 min
6:27 AM – 6:34 PM
Cloud cover
61%
12th clearest
Wind
5 km/h
9th windiest
Solar energy
5.05 kWh/m²
Travel score
3.1
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 31°C by the end.

A typical September day in Ciudad Valles reaches about 32°C in the afternoon and slips back to 23°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, September runs about 1°C cooler than August and about 2°C warmer than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53224
63224
73224
83224
93224
103223
113223
123223
133223
143223
153223
163223
173223
183223
193223
203223
213223
223123
233123
243123
253123
263123
273122
283122
293122
303122

How September really feels in Ciudad Valles

Once humidity and wind are folded in, September averages 30 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
30
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

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

Ciudad Valles weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 14°296.510.87.6
Feb26° / 16°255.511.27.2
Mar30° / 19°37711.85.6
Apr33° / 21°447.512.53.9
May34° / 24°7512.6132.7
Jun34° / 24°16118.513.32.4
Jul33° / 24°16818.513.22.8
Aug33° / 24°15318.812.82.7
Sep32° / 23°22620.812.13.1
Oct30° / 21°12512.711.54.9
Nov27° / 18°458.110.96.9
Dec25° / 15°235.410.77.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 31% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 51%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
15050
24951
34951
44951
54852
64753
74753
84753
94852
104951
114852
124951
135050
145050
155050
165050
175050
184951
194951
204951
215050
224951
234951
245149
255149
265149
275149
285149
295248
305347

Chance of precipitation in September

Any precipitation

Ciudad Valles gets around 226 mm of rain over 20.8 wet days in September, the wettest month. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 68% and peaks near 76% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
172
273
374
474
575
675
776
876
976
1076
1175
1275
1374
1473
1572
1671
1770
1869
1968
2066
2165
2263
2362
2460
2559
2658
2757
2856
2955
3055

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10047620
20047620
30047620
40047521
50047521
60047422
70057322
80057322
90057223
100057223
110057223
120057223
130067123
140067024
150067024
160176824
170176923
180186823
190196822
2002106622
2102116621
2213126420
2313136320
2414156119
2514166118
2615176017
2725185916
2825195915
2926205814
3026215813

Wind in September

Winds average 5 km/h in September.

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

0246810151015202530
Wind speed (km/h)Feels
15calm
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

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 48 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over September. Sunrise moves from 6:22 AM to 6:31 AM, and sunset from 6:49 PM to 6:20 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:226:49
212.46:236:48
312.46:236:47
412.46:236:46
512.46:246:45
612.36:246:44
712.36:246:43
812.36:246:42
912.36:256:41
1012.36:256:40
1112.26:256:39
1212.26:266:38
1312.26:266:37
1412.26:266:36
1512.16:266:35
1612.16:276:34
1712.16:276:33
1812.16:276:32
1912.16:276:31
2012.06:286:30
2112.06:286:29
2212.06:286:28
2312.06:296:27
2412.06:296:26
2511.96:296:25
2611.96:296:24
2711.96:306:23
2811.96:306:22
2911.86:306:21
3011.86:316:20

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.05 kWh/m².

For context, solar energy here swings from a low near 3.49 kWh/m² to a high of 6.03 kWh/m² in August across the year — September's 5.05 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.4Bright
45.4Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.1Bright
135.1Bright
145.1Bright
155.1Bright
165.1Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
215.0Bright
225.0Bright
235.0Bright
244.9Bright
254.9Bright
264.9Bright
274.9Bright
284.9Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Ciudad Valles

In seasonPeak

In September, Ciudad Valles sits inside its monsoon season. The full year is below, with each hazard's peak months called out.

Ciudad Valles's monsoon runs June–October, when most of the year's rain falls.

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

Is September a good time to visit Ciudad Valles?

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

3.1
Sightseeing
8th-best month of the year
4.9
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Ciudad Valles.

What to pack for Ciudad Valles in September

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

In September, Ciudad Valles sees daytime highs around 32°C and nights near 23°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Ciudad Valles in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Ciudad Valles peaks around June 19 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighJun 19UV 12Dec 18UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Extreme
Apr12Extreme
May10Very high
Jun12Extreme
Jul11Extreme
Aug12Extreme
Sep10Very high
Oct9Very high
Nov7High
Dec6High

Air quality in Ciudad Valles in September

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where September falls, not just the annual average.

Air quality in Ciudad Valles is worst in May — around 31 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (October, 18 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1530 µg/m³Oct 2118 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb22Moderate
Mar23Moderate
Apr27Moderate
May31Moderate
Jun25Moderate
Jul24Moderate
Aug20Moderate
Sep19Moderate
Oct18Moderate
Nov18Moderate
Dec22Moderate
Location & terrain

Where is Ciudad Valles?

Ciudad Valles sits at 22.0°N, 99.0°W, 90 m above sea level, in Mexico. The nearest listed city is Tamuín, 24 km away.

Topography around Ciudad Valles

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

Within 3 km, the terrain around Ciudad Valles has only modest variations in elevation — a maximum elevation change of 144 m around an average of 105 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 686 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,888 m.

The land around Ciudad Valles is covered by artificial surfaces (51%) and trees (31%) within 3 km, trees (57%) and grassland (25%) within 16 km, and trees (46%) and grassland (25%) within 80 km.

3 km
144 m
16 km
686 m
80 km
2,888 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Tamuín 24 km · Cárdenas 65 km · Ébano 70 km · Ciudad Mante 83 km · Tamazunchale 85 km · Pánuco 86 km · Rioverde 102 km · Ciudad Fernández 103 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 Ciudad Valles (21.9963°, -99.0109°, elevation 90 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).