Casa Blanca weather in September

In September, Casa Blanca sees average daytime highs of 23°C and overnight lows near 13°C, with 180 mm of rain across 20.5 wet days and about 12.1 hours of daylight. It is the 10th-warmest and 1st-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 9% 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 Casa Blanca's 12th-clearest and 9th-windiest month. For the whole year in context, see Casa Blanca's year-round climate.

Daytime high
23°
10th warmest
Overnight low
13°
11th coldest
Rainfall
180 mm
20.5 wet days
Daylight
12 h 06 min
6:24 AM – 6:30 PM
Cloud cover
75%
12th clearest
Wind
7 km/h
9th windiest
Solar energy
5.46 kWh/m²
Travel score
5.0
out of 10

Casa Blanca is town in Amozoc Municipality, State of Puebla, 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 23°C through the month.

A typical September day in Casa Blanca 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 21°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°30°151015202530
Avg high (°C)Avg low (°C)
12414
22414
32414
42314
52314
62314
72314
82314
92314
102314
112314
122314
132314
142314
152314
162314
172313
182313
192313
202313
212313
222313
232313
242313
252313
262313
272313
282313
292313
302313

Casa Blanca weather by month

How September compares with the rest of the year at a glance. September is the 10th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 101.9118.4
Feb24° / 91.911.48.8
Mar25° / 10°214.611.98.2
Apr26° / 12°459.612.46.9
May26° / 13°10217.312.95.7
Jun24° / 14°17920.413.15.1
Jul24° / 13°13518135.6
Aug24° / 13°15319.412.65.4
Sep23° / 13°18020.512.15.0
Oct24° / 12°7411.711.66.7
Nov23° / 20411.18.2
Dec23° / 61.310.98.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 9% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 72%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12476
22476
32377
42476
52476
62575
72575
82575
92674
102575
112674
122773
132773
142773
152773
162872
172872
182872
192872
202872
212971
222971
233070
243070
253169
263268
273367
283466
293565
303565

Chance of precipitation in September

Any precipitation

Casa Blanca gets around 180 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 73% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
172
272
373
473
573
673
773
872
972
1071
1171
1270
1369
1469
1568
1667
1767
1866
1966
2065
2164
2264
2363
2462
2561
2661
2760
2859
2958
3058

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 49% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
148511
247521
347521
446531
546531
646522
746522
846522
946522
1046522
1146522
1246522
1347512
1447512
1547512
1647512
1747512
1848502
1948502
2049492
2149482
2251472
2352462
2453452
2554442
2655432
2756422
2858411
2958411
3059401

Wind in September

Winds average 7 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
308calm

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 6:21 AM to 6:26 AM, and sunset from 6:44 PM to 6:17 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:216:44
212.46:216:43
312.36:216:42
412.36:216:41
512.36:226:40
612.36:226:39
712.36:226:38
812.36:226:37
912.26:226:36
1012.26:236:36
1112.26:236:35
1212.26:236:34
1312.26:236:33
1412.16:236:32
1512.16:236:31
1612.16:246:30
1712.16:246:29
1812.16:246:28
1912.16:246:27
2012.06:246:26
2112.06:256:25
2212.06:256:24
2312.06:256:24
2412.06:256:23
2511.96:256:22
2611.96:266:21
2711.96:266:20
2811.96:266:19
2911.96:266:18
3011.86:266:17

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.46 kWh/m².

For context, solar energy here swings from a low near 5.15 kWh/m² to a high of 7.18 kWh/m² in April across the year — September's 5.46 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.7Bright
35.7Bright
45.7Bright
55.7Bright
65.6Bright
75.6Bright
85.6Bright
95.6Bright
105.6Bright
115.5Bright
125.5Bright
135.5Bright
145.5Bright
155.5Bright
165.5Bright
175.5Bright
185.5Bright
195.5Bright
205.4Bright
215.4Bright
225.4Bright
235.4Bright
245.4Bright
255.4Bright
265.4Bright
275.4Bright
285.4Bright
295.4Bright
305.3Bright
Planning a trip in September

Hazard calendar for Casa Blanca

In seasonPeak

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

Casa Blanca's monsoon runs May–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 Casa Blanca?

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

5.0
Sightseeing
12th-best month of the year
4.1
Beach & pool
12th-best month of the year

September is a reasonable time to visit Casa Blanca for sightseeing.

What to pack for Casa Blanca in September

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

In September, Casa Blanca sees daytime highs around 23°C and nights near 13°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

UV index in Casa Blanca in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Casa Blanca peaks around April 11 at about 15 (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 11UV 15Dec 15UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr15Extreme
May10Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Casa Blanca 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 Casa Blanca is worst in November — around 83 µg/m³ PM2.5 (unhealthy), and holds fairly steady the rest of the year.

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

0306090JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyPoorUnhealthyNov 2283 µg/m³Mar 2153 µg/m³
PM2.5 (µg/m³)Level
Jan64Unhealthy
Feb59Unhealthy
Mar53Poor
Apr54Poor
May73Unhealthy
Jun66Unhealthy
Jul65Unhealthy
Aug63Unhealthy
Sep72Unhealthy
Oct72Unhealthy
Nov83Unhealthy
Dec81Unhealthy
Location & terrain

Where is Casa Blanca?

Casa Blanca sits at 19.0°N, 98.1°W, 2,232 m above sea level, in Mexico. The nearest listed city is Amozoc de Mota, 8.0 km away.

Topography around Casa Blanca

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

Within 3 km, the terrain around Casa Blanca has significant variations in elevation — a maximum elevation change of 283 m around an average of 2,260 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,029 m; within 80 km, extreme variations in elevation — a maximum elevation change of 4,428 m.

The land around Casa Blanca is covered by artificial surfaces (56%) and trees (28%) within 3 km, artificial surfaces (30%) and grassland (22%) within 16 km, and cropland (31%), trees (24%) and shrubs (24%) within 80 km.

3 km
283 m
16 km
1,029 m
80 km
4,428 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Amozoc de Mota 8.0 km · Puebla 9.0 km · Villa Vicente Guerrero 10 km · Sanctorum 16 km · Tepatlaxco de Hidalgo 16 km · Santiago Momoxpan 16 km · Papalotla 17 km · San Bernardino Tlaxcalancingo 17 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 Casa Blanca (19.0422°, -98.1189°, elevation 2,232 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).