León de los Aldama weather in September

In September, León de los Aldama sees average daytime highs of 27°C and overnight lows near 16°C, with 100 mm of rain across 14.2 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 4th-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 21% of the time in September, and the air most often feels comfortable.

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 León de los Aldama's 12th-clearest and 6th-windiest month. For the whole year in context, see León de los Aldama's year-round climate.

Daytime high
27°
8th warmest
Overnight low
16°
8th coldest
Rainfall
100 mm
14.2 wet days
Daylight
12 h 06 min
6:37 AM – 6:45 PM
Cloud cover
64%
12th clearest
Wind
8 km/h
6th windiest
Solar energy
5.59 kWh/m²
Travel score
5.8
out of 10

León de los Aldama is city in Guanajuato, Mexico.

Founded
1576

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 27°C through the month.

A typical September day in León de los Aldama reaches about 27°C in the afternoon and slips back to 16°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12716
22716
32716
42716
52716
62716
72616
82616
92616
102616
112616
122716
132716
142716
152716
162716
172716
182715
192715
202715
212715
222715
232715
242715
252715
262715
272715
282715
292715
302715

León de los Aldama weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 4th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 132.210.98.5
Feb26° / 10°101.611.38.5
Mar28° / 12°81.511.97.6
Apr31° / 14°71.712.55.8
May32° / 16°275.6134.9
Jun30° / 17°11313.713.34.8
Jul27° / 16°13518.313.25.3
Aug27° / 16°11816.712.75.5
Sep27° / 16°10014.212.15.8
Oct27° / 14°346.311.57.2
Nov26° / 11°102.1118.4
Dec24° / 61.210.78.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 21% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 23% of September, with mostly cloudy or overcast conditions the remaining 56%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14456
24258
34258
44258
54258
64159
74060
84060
94159
104159
114258
124357
134357
144357
154357
164555
174555
184555
194555
204555
214555
224654
234555
244654
254654
264753
274753
284852
294852
305050

Chance of precipitation in September

Any precipitation

León de los Aldama gets around 100 mm of rain over 14.2 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 47% and peaks near 57% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
157
257
356
456
556
655
755
854
954
1053
1152
1252
1351
1450
1549
1648
1747
1846
1945
2044
2143
2241
2340
2438
2537
2636
2735
2834
2933
3032

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the comfortable band about 47% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
1245422
2245323
3245323
4245224
5245224
6245224
7255124
8255124
9265024
10265024
11275023
12284923
13294823
14304823
15314722
16324721
17334721
18344620
19354619
20364618
21384517
22404416
23414316
24434215
25454114
26474013
27493912
28513811
29523810
30533710

Wind in September

Winds average 8 km/h in September.

Across September, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
17calm
27calm
37calm
47calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
278calm
288calm
298calm
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 6:34 AM to 6:41 AM, and sunset from 6:59 PM to 6:31 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:346:59
212.46:346:58
312.46:346:57
412.46:346:56
512.36:356:55
612.36:356:54
712.36:356:53
812.36:356:53
912.36:366:52
1012.26:366:51
1112.26:366:50
1212.26:366:49
1312.26:376:48
1412.26:376:47
1512.16:376:46
1612.16:376:45
1712.16:386:44
1812.16:386:43
1912.16:386:42
2012.06:386:41
2112.06:396:40
2212.06:396:39
2312.06:396:38
2412.06:406:37
2511.96:406:36
2611.96:406:35
2711.96:406:34
2811.96:416:33
2911.86:416:32
3011.86:416:31

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.59 kWh/m².

For context, solar energy here swings from a low near 4.83 kWh/m² to a high of 7.59 kWh/m² in April across the year — September's 5.59 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.8Bright
45.8Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for León de los Aldama

In seasonPeak

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

León de los Aldama's rainy season runs June–September, 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 León de los Aldama?

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

5.8
Sightseeing
7th-best month of the year
5.8
Beach & pool
10th-best month of the year

September is a reasonable time to visit León de los Aldama for sightseeing.

What to pack for León de los Aldama in September

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

In September, León de los Aldama sees daytime highs around 27°C and nights near 16°C. Pack rain gear. Worth having: light clothes and sun protection. About 14 days see rain.

rain gearlight clothessun protection

UV index in León de los Aldama 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 León de los Aldama peaks around June 11 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highJun 11UV 14Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct11Extreme
Nov8Very high
Dec7Very high

Air quality in León de los Aldama 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 León de los Aldama is worst in May — around 21 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1420 µg/m³Oct 1814 µg/m³
PM2.5 (µg/m³)Level
Jan18Moderate
Feb17Moderate
Mar16Moderate
Apr17Moderate
May21Moderate
Jun15Moderate
Jul16Moderate
Aug15Moderate
Sep17Moderate
Oct14Moderate
Nov16Moderate
Dec20Moderate
Location & terrain

Where is León de los Aldama?

León de los Aldama sits at 21.1°N, 101.7°W, 1,803 m above sea level, in Mexico. The nearest listed city is La Ermita, 6.0 km away.

Topography around León de los Aldama

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of León de los Aldama.

Within 3 km, the terrain around León de los Aldama has only modest variations in elevation — a maximum elevation change of 113 m around an average of 1,813 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 1,017 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,273 m.

The land around León de los Aldama is covered by artificial surfaces (96%) within 3 km, shrubs (33%), cropland (27%) and artificial surfaces (25%) within 16 km, and shrubs (39%) and cropland (31%) within 80 km.

3 km
113 m
16 km
1,017 m
80 km
1,273 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: La Ermita 6.0 km · Medina 7.0 km · Centro Familiar la Soledad 7.0 km · San Francisco del Rincón 22 km · Purísima de Bustos 23 km · Romita 33 km · Silao de la Victoria 33 km · Lagos de Moreno 37 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 León de los Aldama (21.1218°, -101.6825°, elevation 1,803 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).