Ciudad Altamirano weather in September

In September, Ciudad Altamirano sees average daytime highs of 33°C and overnight lows near 24°C, with 172 mm of rain across 20.5 wet days and about 12.1 hours of daylight. It is the 12th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 33°C through the month. The sky is clear or mostly clear about 11% 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 54 min by month's end. Set against the rest of the year, September is Ciudad Altamirano's 12th-clearest and 12th-windiest month. For the whole year in context, see Ciudad Altamirano's year-round climate.

Daytime high
33°
12th warmest
Overnight low
24°
8th coldest
Rainfall
172 mm
20.5 wet days
Daylight
12 h 06 min
6:34 AM – 6:40 PM
Cloud cover
75%
12th clearest
Wind
3 km/h
12th windiest
Solar energy
5.11 kWh/m²
Travel score
2.7
out of 10

Ciudad Altamirano is municipal seat of Pungarabato, State of Guerrero, Mexico.

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 33°C through the month.

A typical September day in Ciudad Altamirano reaches about 33°C in the afternoon and slips back to 24°C overnight — a 9°C spread between the day's warmth and the night's chill. On most days the high lands between 30°C and 35°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123324
133324
143324
153324
163324
173324
183324
193324
203324
213324
223324
233324
243324
253324
263324
273324
283324
293324
303324

How September really feels in Ciudad Altamirano

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 Altamirano weather by month

How September compares with the rest of the year at a glance. September is the 12th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan33° / 19°141.3114.5
Feb35° / 20°90.911.43.3
Mar37° / 21°60.611.91.9
Apr39° / 23°00.212.40.5
May39° / 25°132.812.90.4
Jun36° / 25°13415.313.11.7
Jul34° / 24°13517.4132.4
Aug34° / 24°13917.812.62.4
Sep33° / 24°17220.512.12.7
Oct33° / 23°8711.211.63.3
Nov34° / 21°172.411.13.8
Dec33° / 19°7110.94.4

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 14% of September, with mostly cloudy or overcast conditions the remaining 75%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12278
22278
32179
42179
52179
62179
72179
82179
92179
102179
112179
122377
132377
142377
152476
162476
172575
182575
192575
202575
212575
222773
232773
242872
252872
262971
272971
282971
293169
303367

Chance of precipitation in September

Any precipitation

Ciudad Altamirano gets around 172 mm of rain over 20.5 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 67% and peaks near 72% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
168
269
370
470
571
671
772
872
972
1071
1171
1271
1370
1470
1569
1669
1768
1867
1967
2066
2165
2265
2364
2463
2562
2661
2760
2859
2959
3058

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 52% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1044947
2035047
3035047
4025147
5025147
6025048
7015148
8015148
9015049
10015049
11014950
12014851
13014752
14014653
15014554
16014455
17014356
18014356
19004258
20004258
21004258
22004258
23014257
24014356
25014356
26014455
27024553
28124552
29134650
30134749

Wind in September

Winds average 3 km/h in September, the calmest month.

Across September, daily wind ranges from about 3 km/h on the calmest days to 3 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
13calm
23calm
33calm
43calm
53calm
63calm
73calm
83calm
93calm
103calm
113calm
123calm
133calm
143calm
153calm
163calm
173calm
183calm
193calm
203calm
213calm
223calm
233calm
243calm
253calm
263calm
273calm
283calm
293calm
303calm

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 6:31 AM to 6:36 AM, and sunset from 6:53 PM to 6:28 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:316:53
212.36:326:52
312.36:326:52
412.36:326:51
512.36:326:50
612.36:326:49
712.36:326:48
812.26:336:47
912.26:336:46
1012.26:336:45
1112.26:336:45
1212.26:336:44
1312.26:336:43
1412.16:346:42
1512.16:346:41
1612.16:346:40
1712.16:346:39
1812.16:346:38
1912.06:346:37
2012.06:356:36
2112.06:356:36
2212.06:356:35
2312.06:356:34
2412.06:356:33
2511.96:356:32
2611.96:366:31
2711.96:366:30
2811.96:366:29
2911.96:366:28
3011.96:366:28

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.11 kWh/m².

For context, solar energy here swings from a low near 4.95 kWh/m² to a high of 7.47 kWh/m² in April across the year — September's 5.11 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
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
165.1Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.0Bright
225.0Bright
235.0Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Ciudad Altamirano

In seasonPeak

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

Ciudad Altamirano'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 Ciudad Altamirano?

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

2.7
Sightseeing
6th-best month of the year
4.6
Beach & pool
9th-best month of the year

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

What to pack for Ciudad Altamirano in September

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

In September, Ciudad Altamirano sees daytime highs around 33°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 21 days see rain.

light clothesrain gearsun protection

UV index in Ciudad Altamirano 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 Altamirano peaks around March 23 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 14 at about 7 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighMar 23UV 12Dec 14UV 7
UV index (midday)Level
Jan9Very high
Feb10Extreme
Mar12Extreme
Apr12Extreme
May10Extreme
Jun12Extreme
Jul11Extreme
Aug11Extreme
Sep10Extreme
Oct9Very high
Nov7Very high
Dec7High

Air quality in Ciudad Altamirano 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 Altamirano is worst in May — around 42 µg/m³ PM2.5 (poor), about 4.5× the cleanest month (February, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateMay 1540 µg/m³Feb 1810 µg/m³
PM2.5 (µg/m³)Level
Jan12Good
Feb9Good
Mar11Good
Apr26Moderate
May42Poor
Jun15Moderate
Jul14Moderate
Aug13Moderate
Sep14Moderate
Oct17Moderate
Nov15Moderate
Dec13Moderate
Location & terrain

Where is Ciudad Altamirano?

Ciudad Altamirano sits at 18.4°N, 100.7°W, 250 m above sea level, in Mexico. The nearest listed city is Huetamo de Núñez, 38 km away.

Topography around Ciudad Altamirano

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

Within 3 km, the terrain around Ciudad Altamirano has significant variations in elevation — a maximum elevation change of 271 m around an average of 250 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,198 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,692 m.

The land around Ciudad Altamirano is covered by cropland (35%), trees (20%) and artificial surfaces (20%) within 3 km, trees (34%), shrubs (27%) and cropland (24%) within 16 km, and trees (56%) and shrubs (28%) within 80 km.

3 km
271 m
16 km
1,198 m
80 km
2,692 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Huetamo de Núñez 38 km · Arcelia 41 km · Tejupilco de Hidalgo 82 km · Teloloapan 84 km · Tuzantla 95 km · Valle de Bravo 109 km · Petatlán 111 km · Taxco de Alarcón 114 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 Altamirano (18.3582°, -100.6697°, elevation 250 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).