Chilpancingo weather in September

In September, Chilpancingo sees average daytime highs of 25°C and overnight lows near 17°C, with 384 mm of rain across 28.5 wet days and about 12.1 hours of daylight. It is the 12th-warmest and 2nd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 2% of the time in September, and the air most often feels humid.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Chilpancingo's 12th-clearest and 12th-windiest month. For the whole year in context, see Chilpancingo's year-round climate.

Daytime high
25°
12th warmest
Overnight low
17°
11th coldest
Rainfall
384 mm
28.5 wet days
Daylight
12 h 06 min
6:29 AM – 6:35 PM
Cloud cover
87%
12th clearest
Wind
4 km/h
12th windiest
Solar energy
4.89 kWh/m²
Travel score
3.7
out of 10

Chilpancingo is capital of the State of Guerrero, Mexico.

Founded
1591

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 25°C through the month.

A typical September day in Chilpancingo reaches about 25°C in the afternoon and slips back to 17°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°C. Set against its neighbours, September runs on par with August and on par with October.

15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12517
22517
32517
42517
52517
62517
72517
82517
92517
102517
112517
122517
132517
142517
152517
162517
172517
182517
192517
202517
212517
222517
232517
242517
252517
262517
272517
282517
292517
302517

Chilpancingo weather by month

How September compares with the rest of the year at a glance. September is the 12th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 12°162.611.18.2
Feb27° / 13°121.711.48.0
Mar29° / 14°183.211.96.9
Apr30° / 15°376.112.45.7
May29° / 17°15717.412.84.7
Jun26° / 17°35326.9133.8
Jul26° / 17°37628.612.93.7
Aug26° / 17°40829.112.63.7
Sep25° / 17°38428.512.13.7
Oct26° / 16°18821.511.64.9
Nov26° / 14°528.611.27.1
Dec26° / 13°172.6118.3

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 2% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 7% of September, with mostly cloudy or overcast conditions the remaining 91%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
1793
2793
3793
4793
5694
6694
7694
8694
9793
10793
11793
12892
13892
14892
15892
16892
17892
18892
19892
20892
21892
22991
23991
24991
251090
261288
271288
281288
291486
301486

Chance of precipitation in September

Any precipitation

Chilpancingo gets around 384 mm of rain over 28.5 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 94% and peaks near 95% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
195
295
395
495
595
695
795
895
995
1095
1195
1295
1395
1495
1595
1695
1795
1895
1995
2095
2195
2294
2394
2493
2593
2692
2791
2890
2989
3088

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 87% of days. Sticky, muggy-or-worse air turns up on roughly 11% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)
118811
218811
318910
418910
518910
61909
71909
82899
92899
102899
112899
122899
132899
1428810
1518910
1618910
1718910
1818811
1918811
2018811
2118712
2218712
2328513
2428513
2528513
2638314
2738314
2848313
2958213
3058213

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 18 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 24 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)
112.36:276:48
212.36:276:47
312.36:286:47
412.36:286:46
512.36:286:45
612.36:286:44
712.26:286:43
812.26:286:42
912.26:286:41
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
1812.16:306:33
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 4.89 kWh/m² — the year's lowest.

For context, solar energy here swings from a low near 4.89 kWh/m² to a high of 7.35 kWh/m² in April across the year — September's 4.89 kWh/m² sits near the bottom.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.1Bright
45.1Bright
55.0Bright
65.0Bright
75.0Bright
85.0Bright
95.0Bright
105.0Bright
115.0Bright
125.0Bright
135.0Bright
145.0Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.8Bright
224.8Bright
234.8Bright
244.8Bright
254.8Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Chilpancingo

In seasonPeak

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

Chilpancingo'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 Chilpancingo?

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

3.7
Sightseeing
10th-best month of the year
3.4
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Chilpancingo.

What to pack for Chilpancingo in September

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

In September, Chilpancingo sees daytime highs around 25°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 29 days see rain.

rain gearlight clothessun protection

UV index in Chilpancingo 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 Chilpancingo 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 Chilpancingo 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 Chilpancingo is worst in May — around 56 µg/m³ PM2.5 (unhealthy), about 3.9× the cleanest month (February, 14 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1254 µg/m³Feb 1115 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb14Moderate
Mar19Moderate
Apr48Poor
May56Unhealthy
Jun18Moderate
Jul18Moderate
Aug16Moderate
Sep16Moderate
Oct19Moderate
Nov17Moderate
Dec17Moderate
Location & terrain

Where is Chilpancingo?

Chilpancingo sits at 17.6°N, 99.5°W, 1,249 m above sea level, in Mexico. The nearest listed city is Tixtla de Guerrero, 11 km away.

Topography around Chilpancingo

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

Within 3 km, the terrain around Chilpancingo has significant variations in elevation — a maximum elevation change of 550 m around an average of 1,370 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,918 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,522 m.

The land around Chilpancingo is covered by artificial surfaces (59%) and shrubs (21%) within 3 km, trees (46%) and shrubs (37%) within 16 km, and trees (57%) and shrubs (29%) within 80 km.

3 km
550 m
16 km
1,918 m
80 km
3,522 m
treesshrubsgrasslandcroplandartificial surfaces
September weather nearby: Tixtla de Guerrero 11 km · Zumpango del Río 12 km · Chilapa de Álvarez 35 km · Ayutla de los Libres 78 km · Ciudad de Huitzuco 85 km · Iguala de la Independencia 88 km · Acapulco 89 km · Tlapa de Comonfort 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 Chilpancingo (17.5523°, -99.5012°, elevation 1,249 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).