San Miguel el Alto weather in September

In September, San Miguel el Alto sees average daytime highs of 25°C and overnight lows near 15°C, with 137 mm of rain across 16.4 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 3rd-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 20% 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 San Miguel el Alto's 12th-clearest and 10th-windiest month. For the whole year in context, see San Miguel el Alto's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
8th coldest
Rainfall
137 mm
16.4 wet days
Daylight
12 h 06 min
6:40 AM – 6:47 PM
Cloud cover
66%
12th clearest
Wind
8 km/h
10th windiest
Solar energy
5.58 kWh/m²
Travel score
5.7
out of 10

San Miguel el Alto is municipal seat of San Miguel, State of Jalisco, 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 25°C through the month.

A typical September day in San Miguel el Alto reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°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.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12515
22515
32515
42515
52515
62515
72515
82515
92515
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262514
272514
282514
292514
302514

San Miguel el Alto weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan22° / 182.710.98.2
Feb24° / 10°131.811.38.7
Mar27° / 11°91.111.98.4
Apr29° / 14°61.512.56.8
May30° / 16°274.9135.7
Jun28° / 17°1331513.35.1
Jul26° / 15°18420.813.15.1
Aug26° / 15°16119.112.75.3
Sep25° / 15°13716.412.15.7
Oct25° / 13°517.511.57.4
Nov24° / 10°142.7118.6
Dec23° / 81.410.78.4

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 20% 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 61%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13763
23763
33763
43664
53664
63664
73664
83664
93664
103763
113763
123862
133862
143862
153862
163862
173862
183862
193862
203961
213961
223961
234060
244159
254159
264258
274357
284456
294456
304555

Chance of precipitation in September

Any precipitation

San Miguel el Alto gets around 137 mm of rain over 16.4 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 54% and peaks near 65% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
165
265
365
464
564
663
763
862
961
1060
1160
1259
1358
1457
1556
1656
1755
1854
1953
2051
2150
2249
2347
2446
2544
2643
2741
2840
2939
3038

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 56% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
1136225
2136225
3146026
4146026
5156025
6156025
7165925
8175825
9175924
10185824
11195724
12205624
13205624
14215623
15225523
16225622
17235621
18245521
19255520
20265519
21285418
22295417
23315316
24335215
25355114
26375013
27394912
28404811
29424811
30434710

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 9 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
17calm
27calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
268calm
279calm
289calm
299calm
309calm

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 6:37 AM to 6:44 AM, and sunset from 7:02 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:377:02
212.46:377:01
312.46:377:00
412.46:376:59
512.36:386:58
612.36:386:57
712.36:386:56
812.36:386:55
912.36:396:54
1012.26:396:53
1112.26:396:52
1212.26:396:51
1312.26:406:50
1412.26:406:49
1512.16:406:48
1612.16:406:47
1712.16:416:47
1812.16:416:46
1912.16:416:45
2012.06:416:44
2112.06:426:43
2212.06:426:42
2312.06:426:41
2412.06:426:40
2511.96:436:39
2611.96:436:38
2711.96:436:37
2811.96:436:36
2911.96:446:35
3011.86:446:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.58 kWh/m².

For context, solar energy here swings from a low near 4.82 kWh/m² to a high of 7.67 kWh/m² in April across the year — September's 5.58 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.8Bright
25.8Bright
35.7Bright
45.7Bright
55.7Bright
65.7Bright
75.7Bright
85.7Bright
95.7Bright
105.7Bright
115.6Bright
125.6Bright
135.6Bright
145.6Bright
155.6Bright
165.6Bright
175.6Bright
185.6Bright
195.6Bright
205.6Bright
215.6Bright
225.6Bright
235.6Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
Planning a trip in September

Hazard calendar for San Miguel el Alto

In seasonPeak

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

San Miguel el Alto'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 San Miguel el Alto?

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

5.7
Sightseeing
8th-best month of the year
5.2
Beach & pool
10th-best month of the year

September is a reasonable time to visit San Miguel el Alto for sightseeing.

What to pack for San Miguel el Alto in September

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

In September, San Miguel el Alto sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 16 days see rain.

rain gearlight clothessun protection

UV index in San Miguel el Alto 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 San Miguel el Alto peaks around May 14 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 highMay 14UV 14Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb10Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in San Miguel el Alto 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 San Miguel el Alto is worst in May — around 23 µg/m³ PM2.5 (moderate), and holds fairly steady the rest of the year.

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

0102030JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1223 µg/m³Jun 2316 µg/m³
PM2.5 (µg/m³)Level
Jan22Moderate
Feb21Moderate
Mar20Moderate
Apr21Moderate
May23Moderate
Jun16Moderate
Jul16Moderate
Aug17Moderate
Sep19Moderate
Oct18Moderate
Nov20Moderate
Dec22Moderate
Location & terrain

Where is San Miguel el Alto?

San Miguel el Alto sits at 21.0°N, 102.4°W, 1,861 m above sea level, in Mexico. The nearest listed city is Jalostotitlán, 16 km away.

Topography around San Miguel el Alto

How much the land rises and falls, and what covers it, within 3, 16 and 80 km of San Miguel el Alto.

Within 3 km, the terrain around San Miguel el Alto has only modest variations in elevation — a maximum elevation change of 128 m around an average of 1,866 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 544 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,640 m.

The land around San Miguel el Alto is covered by cropland (43%) and grassland (30%) within 3 km, grassland (36%), shrubs (31%) and cropland (28%) within 16 km, and shrubs (33%), cropland (33%) and grassland (20%) within 80 km.

3 km
128 m
16 km
544 m
80 km
1,640 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Jalostotitlán 16 km · San Juan de los Lagos 25 km · Arandas 37 km · Tepatitlán de Morelos 44 km · Teocaltiche 48 km · Purísima de Bustos 54 km · Atotonilco el Alto 54 km · San Francisco del Rincón 56 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 San Miguel el Alto (21.0305°, -102.4023°, elevation 1,861 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).