Iztacalco weather in September

In September, Iztacalco sees average daytime highs of 23°C and overnight lows near 13°C, with 151 mm of rain across 19.4 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 23°C through the month. The sky is clear or mostly clear about 8% 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 Iztacalco's 12th-clearest and 10th-windiest month. For the whole year in context, see Iztacalco's year-round climate.

Daytime high
23°
8th warmest
Overnight low
13°
8th coldest
Rainfall
151 mm
19.4 wet days
Daylight
12 h 06 min
6:27 AM – 6:34 PM
Cloud cover
76%
12th clearest
Wind
6 km/h
10th windiest
Solar energy
5.13 kWh/m²
Travel score
5.1
out of 10
Air quality
Moderate
PM10 34.7 µg/m³ · 2017

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 23°C through the month.

A typical September day in Iztacalco reaches about 23°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
122313
132313
142313
152313
162313
172313
182313
192313
202313
212313
222213
232213
242213
252212
262212
272212
282212
292212
302212

Iztacalco weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan21° / 102.2118.1
Feb23° / 81.811.38.6
Mar25° / 10°92.911.98.5
Apr26° / 12°184.112.47.8
May27° / 13°307.212.97.2
Jun25° / 14°11816.113.15.7
Jul24° / 13°14122.113.15.0
Aug23° / 13°15921.712.74.9
Sep23° / 13°15119.412.15.1
Oct22° / 11°7210.411.66.6
Nov22° / 173.611.18.0
Dec21° / 61.310.98.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 77%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12080
22080
32080
42080
52080
62080
72080
82080
92080
102080
112278
122278
132278
142476
152476
162575
172575
182575
192575
202575
212476
222476
232575
242575
252773
262773
272872
282872
292872
302971

Chance of precipitation in September

Any precipitation

Iztacalco gets around 151 mm of rain over 19.4 wet days in September. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 63% and peaks near 69% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
169
269
369
468
568
668
768
867
967
1066
1166
1265
1364
1464
1563
1663
1763
1862
1962
2062
2162
2261
2360
2459
2558
2657
2756
2855
2954
3053

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 71% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
16832
26832
36832
46832
56832
66832
76832
86832
96832
106931
116931
126931
136931
147030
157030
167030
177129
187129
197228
207228
217228
227327
237426
247525
257624
267624
277723
287822
297921
308020

Wind in September

Winds average 6 km/h in September.

Across September, 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.

0246810151015202530
Wind speed (km/h)Feels
15calm
25calm
35calm
45calm
55calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:24 AM to 6:30 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)
112.46:246:48
212.46:256:47
312.46:256:46
412.36:256:45
512.36:256:44
612.36:266:43
712.36:266:42
812.36:266:41
912.26:266:41
1012.26:266:40
1112.26:266:39
1212.26:276:38
1312.26:276:37
1412.16:276:36
1512.16:276:35
1612.16:276:34
1712.16:286:33
1812.16:286:32
1912.16:286:31
2012.06:286:30
2112.06:286:29
2212.06:296:28
2312.06:296:27
2412.06:296:26
2511.96:296:26
2611.96:296:25
2711.96:306:24
2811.96:306:23
2911.96:306:22
3011.86:306:21

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 5.01 kWh/m² to a high of 7 kWh/m² in April across the year — September's 5.13 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.3Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.2Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Iztacalco

In seasonPeak

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

Iztacalco'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 Iztacalco?

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

5.1
Sightseeing
10th-best month of the year
3.8
Beach & pool
12th-best month of the year

September is a reasonable time to visit Iztacalco for sightseeing.

What to pack for Iztacalco in September

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

In September, Iztacalco sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 19 days see rain.

rain gearlight clothessun protection

UV index in Iztacalco 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 Iztacalco peaks around April 9 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.

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highApr 9UV 14Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr14Extreme
May11Extreme
Jun14Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Iztacalco 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 Iztacalco 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 Iztacalco?

Iztacalco sits at 19.4°N, 99.1°W, 2,239 m above sea level, in Mexico. The nearest listed city is Colonia Nativitas, 4.0 km away.

Topography around Iztacalco

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

Within 3 km, the terrain around Iztacalco has only modest variations in elevation — a maximum elevation change of 26 m around an average of 2,232 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 516 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,460 m.

The land around Iztacalco is covered by artificial surfaces (90%) within 3 km, artificial surfaces (75%) within 16 km, and trees (33%) and cropland (27%) within 80 km.

3 km
26 m
16 km
516 m
80 km
4,460 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Colonia Nativitas 4.0 km · Mexico City 5.0 km · Venustiano Carranza 5.0 km · Iztapalapa 6.0 km · Benito Juárez 7.0 km · Colonia del Valle 7.0 km · Cuauhtémoc 8.0 km · Coyoacán 9.0 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 Iztacalco (19.3953°, -99.0978°, elevation 2,239 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).