Cuautitlán Izcalli weather in September

In September, Cuautitlán Izcalli sees average daytime highs of 22°C and overnight lows near 13°C, with 125 mm of rain across 17.6 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 22°C through the month. The sky is clear or mostly clear about 11% of the time in September, and the air most often feels dry.

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 Cuautitlán Izcalli's 12th-clearest and 5th-windiest month. For the whole year in context, see Cuautitlán Izcalli's year-round climate.

Daytime high
22°
8th warmest
Overnight low
13°
9th coldest
Rainfall
125 mm
17.6 wet days
Daylight
12 h 06 min
6:28 AM – 6:34 PM
Cloud cover
74%
12th clearest
Wind
7 km/h
5th windiest
Solar energy
5.13 kWh/m²
Travel score
5.4
out of 10

Cuautitlán Izcalli is municipal seat of Cuautitlán Izcalli, State of Mexico, Mexico.

Density
5,068/km²
people per km²
Founded
1973

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

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 22°C through the month.

A typical September day in Cuautitlán Izcalli reaches about 22°C in the afternoon and slips back to 13°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 20°C and 25°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12313
22313
32313
42313
52313
62313
72313
82313
92313
102313
112313
122213
132213
142213
152213
162213
172213
182213
192213
202213
212213
222212
232212
242212
252212
262212
272212
282212
292212
302212

Cuautitlán Izcalli weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 173.510.97.8
Feb23° / 163.311.38.3
Mar25° / 21511.98.1
Apr26° / 11°387.112.47.2
May26° / 12°5410.112.96.8
Jun25° / 13°11415.213.25.9
Jul23° / 13°10417.313.15.6
Aug23° / 13°10717.112.75.6
Sep22° / 13°12517.612.15.4
Oct22° / 11°6611.211.56.4
Nov22° / 224.711.17.7
Dec21° / 102.310.88.1

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 11% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 15% of September, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22278
32377
42377
52377
62377
72476
82377
92377
102476
112575
122575
132674
142674
152674
162773
172773
182773
192773
202773
212674
222773
232773
242872
252971
263070
273070
283070
293169
303268

Chance of precipitation in September

Any precipitation

Cuautitlán Izcalli gets around 125 mm of rain over 17.6 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 57% and peaks near 62% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
161
261
361
461
561
662
762
862
961
1061
1161
1260
1359
1459
1558
1657
1757
1857
1956
2056
2155
2254
2354
2453
2552
2651
2750
2849
2949
3048

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the dry band about 72% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
17129
27030
37030
47030
56931
66931
76931
86931
96931
106931
117030
127030
137030
147030
157129
167129
177129
187228
197228
207327
217327
227426
237525
247525
257624
267723
277822
287921
298020
308119

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 7 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:25 AM to 6:31 AM, and sunset from 6:48 PM to 6:21 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:256:48
212.46:256:47
312.46:256:47
412.36:256:46
512.36:266:45
612.36:266:44
712.36:266:43
812.36:266:42
912.26:266:41
1012.26:276:40
1112.26:276:39
1212.26:276:38
1312.26:276:37
1412.16:276:36
1512.16:286:35
1612.16:286:34
1712.16:286:34
1812.16:286:33
1912.16:286:32
2012.06:296:31
2112.06:296:30
2212.06:296:29
2312.06:296:28
2412.06:306:27
2511.96:306:26
2611.96:306:25
2711.96:306:24
2811.96:306:23
2911.96:316:22
3011.86:316:21

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.13 kWh/m².

For context, solar energy here swings from a low near 4.9 kWh/m² to a high of 7.1 kWh/m² in April across the year — September's 5.13 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Cuautitlán Izcalli

In seasonPeak

In September, Cuautitlán Izcalli sits inside its rainy season season. The full year is below, with each hazard's peak months called out.

Cuautitlán Izcalli's rainy season runs June–October, when most of the year's rain falls.

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

Is September a good time to visit Cuautitlán Izcalli?

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

5.4
Sightseeing
12th-best month of the year
3.9
Beach & pool
12th-best month of the year

September is a reasonable time to visit Cuautitlán Izcalli for sightseeing.

What to pack for Cuautitlán Izcalli in September

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

In September, Cuautitlán Izcalli sees daytime highs around 22°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 18 days see rain.

rain gearlight clothessun protection

UV index in Cuautitlán Izcalli in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September 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 Cuautitlán Izcalli peaks around June 16 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJun 16UV 14Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb11Extreme
Mar14Extreme
Apr14Extreme
May12Extreme
Jun14Extreme
Jul12Extreme
Aug14Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Cuautitlán Izcalli 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 Cuautitlán Izcalli is worst in December — around 179 µg/m³ PM2.5 (very unhealthy), and holds fairly steady the rest of the year.

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

0306090120150180210JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyDec 11178 µg/m³Apr 14115 µg/m³
PM2.5 (µg/m³)Level
Jan149Unhealthy
Feb141Unhealthy
Mar126Unhealthy
Apr113Unhealthy
May134Unhealthy
Jun126Unhealthy
Jul135Unhealthy
Aug127Unhealthy
Sep136Unhealthy
Oct137Unhealthy
Nov174Very unhealthy
Dec179Very unhealthy
Location & terrain

Where is Cuautitlán Izcalli?

Cuautitlán Izcalli sits at 19.6°N, 99.2°W, 2,288 m above sea level, in Mexico. The nearest listed city is Cuautitlán, 5.0 km away.

Topography around Cuautitlán Izcalli

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

Within 3 km, the terrain around Cuautitlán Izcalli has only modest variations in elevation — a maximum elevation change of 114 m around an average of 2,283 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 765 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,933 m.

The land around Cuautitlán Izcalli is covered by artificial surfaces (75%) within 3 km, artificial surfaces (49%) within 16 km, and cropland (30%) and trees (27%) within 80 km.

3 km
114 m
16 km
765 m
80 km
3,933 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Cuautitlán 5.0 km · Tultitlán de Mariano Escobedo 5.0 km · Huilango 6.0 km · Buenavista 6.0 km · Ampliación San Mateo 8.0 km · Fuentes del Valle 8.0 km · Tepotzotlán 9.0 km · Nicolás Romero 10 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 Cuautitlán Izcalli (19.6439°, -99.216°, elevation 2,288 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).