Zumpango del Río weather in September

In September, Zumpango del Río sees average daytime highs of 28°C and overnight lows near 19°C, with 228 mm of rain across 26.8 wet days and about 12.1 hours of daylight. It is the 11th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 28°C through the month. The sky is clear or mostly clear about 6% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Zumpango del Río's 12th-clearest and 12th-windiest month. For the whole year in context, see Zumpango del Río's year-round climate.

Daytime high
28°
11th warmest
Overnight low
19°
8th coldest
Rainfall
228 mm
26.8 wet days
Daylight
12 h 06 min
6:29 AM – 6:35 PM
Cloud cover
79%
12th clearest
Wind
4 km/h
12th windiest
Solar energy
5.28 kWh/m²
Travel score
3.6
out of 10

Zumpango del Río is municipal seat of Eduardo Neri, State of Guerrero, Mexico.

Founded
1530

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 28°C through the month.

A typical September day in Zumpango del Río reaches about 28°C in the afternoon and slips back to 19°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 26°C and 30°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C cooler than October.

15°20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
12819
22819
32819
42819
52819
62819
72819
82819
92819
102819
112819
122819
132819
142819
152819
162819
172819
182819
192819
202819
212819
222819
232819
242819
252819
262819
272819
282819
292819
302819

How September really feels in Zumpango del Río

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

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Zumpango del Río weather by month

How September compares with the rest of the year at a glance. September is the 11th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 14°131.711.17.8
Feb30° / 15°91.411.46.6
Mar32° / 16°102.511.95.3
Apr33° / 18°174.412.44.1
May32° / 19°7514.412.83.5
Jun29° / 19°20725.3133.2
Jul29° / 19°21327.4133.2
Aug29° / 19°24028.312.63.2
Sep28° / 19°22826.812.13.6
Oct29° / 18°10517.111.64.6
Nov29° / 16°285.811.26.3
Dec28° / 14°101.7117.6

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 6% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 81%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11684
21684
31585
41684
51684
61684
71684
81882
91882
101882
111882
122080
132080
142080
152080
162179
172179
182080
192080
202080
212080
222080
232080
242080
252179
262278
272278
282278
292476
302575

Chance of precipitation in September

Any precipitation

Zumpango del Río gets around 228 mm of rain over 26.8 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 88% and peaks near 92% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
192
292
392
491
591
691
791
890
990
1090
1189
1289
1388
1488
1588
1688
1788
1888
1988
2088
2187
2287
2387
2486
2585
2684
2784
2883
2982
3081

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 68% of days. Sticky, muggy-or-worse air turns up on roughly 24% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
1077122
2067222
3057322
4057322
5057322
6057322
7057322
8057322
9057223
10057223
11057223
12067123
13067123
14067024
15076924
16076825
17076825
18076726
19076726
20076726
21186526
22186526
23186526
24196426
252106325
262106325
273116125
283116224
294126024
304136023

Wind in September

Winds average 4 km/h in September, the calmest month.

Across September, daily wind ranges from about 4 km/h on the calmest days to 4 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
244calm
254calm
264calm
274calm
284calm
294calm
304calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 24 min at the start of September to 11 h 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over September. Sunrise moves from 6:27 AM to 6:32 AM, and sunset from 6:48 PM to 6:23 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:276:48
212.36:276:47
312.36:286:47
412.36:286:46
512.36:286:45
612.36:286:44
712.36:286:43
812.26:286:42
912.26:296:42
1012.26:296:41
1112.26:296:40
1212.26:296:39
1312.16:296:38
1412.16:296:37
1512.16:296:36
1612.16:296:35
1712.16:306:34
1812.16:306:34
1912.06:306:33
2012.06:306:32
2112.06:306:31
2212.06:306:30
2312.06:306:29
2412.06:316:28
2511.96:316:27
2611.96:316:27
2711.96:316:26
2811.96:316:25
2911.96:316:24
3011.96:326:23

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.28 kWh/m².

For context, solar energy here swings from a low near 5.07 kWh/m² to a high of 7.41 kWh/m² in April across the year — September's 5.28 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.2Bright
225.2Bright
235.2Bright
245.2Bright
255.2Bright
265.2Bright
275.2Bright
285.2Bright
295.2Bright
305.2Bright
Planning a trip in September

Hazard calendar for Zumpango del Río

In seasonPeak

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

Zumpango del Río's monsoon runs June–September, 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 Zumpango del Río?

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

3.6
Sightseeing
8th-best month of the year
4.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Zumpango del Río.

What to pack for Zumpango del Río in September

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

In September, Zumpango del Río sees daytime highs around 28°C and nights near 19°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

UV index in Zumpango del Río in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 12 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Zumpango del Río peaks around March 23 at about 13 (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 highMar 23UV 13Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar13Extreme
Apr13Extreme
May10Very high
Jun12Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Zumpango del Río 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 Zumpango del Río is worst in May — around 36 µg/m³ PM2.5 (poor), about 2.5× the cleanest month (March, 15 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1434 µg/m³Mar 1015 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb16Moderate
Mar15Moderate
Apr28Moderate
May36Poor
Jun19Moderate
Jul18Moderate
Aug17Moderate
Sep21Moderate
Oct28Moderate
Nov26Moderate
Dec24Moderate
Location & terrain

Where is Zumpango del Río?

Zumpango del Río sits at 17.7°N, 99.5°W, 1,040 m above sea level, in Mexico. The nearest listed city is Chilpancingo, 12 km away.

Topography around Zumpango del Río

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

Within 3 km, the terrain around Zumpango del Río has significant variations in elevation — a maximum elevation change of 391 m around an average of 1,134 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 2,158 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,502 m.

The land around Zumpango del Río is covered by shrubs (71%) within 3 km, shrubs (55%) and trees (33%) within 16 km, and trees (54%) and shrubs (33%) within 80 km.

3 km
391 m
16 km
2,158 m
80 km
3,502 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Chilpancingo 12 km · Tixtla de Guerrero 17 km · Chilapa de Álvarez 38 km · Ciudad de Huitzuco 75 km · Iguala de la Independencia 77 km · Teloloapan 87 km · Ayutla de los Libres 89 km · Acapulco 98 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 Zumpango del Río (17.6544°, -99.5272°, elevation 1,040 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).