Zacatecas weather in September

In September, Zacatecas sees average daytime highs of 23°C and overnight lows near 13°C, with 107 mm of rain across 12.6 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 2nd-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 26% of the time in September, and the air most often feels dry.

Daylight stretches from about 12 h 30 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Zacatecas's 12th-clearest and 11th-windiest month. For the whole year in context, see Zacatecas's year-round climate.

Daytime high
23°
7th warmest
Overnight low
13°
8th coldest
Rainfall
107 mm
12.6 wet days
Daylight
12 h 06 min
6:41 AM – 6:49 PM
Cloud cover
62%
12th clearest
Wind
11 km/h
11th windiest
Solar energy
5.65 kWh/m²
Travel score
6.4
out of 10

Zacatecas is city in Zacatecas Municipality, Zacatecas State, Mexico.

Density
362/km²
people per km²
Founded
1548

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 Zacatecas reaches about 23°C in the afternoon and slips back to 13°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 21°C and 26°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)
12413
22413
32413
42413
52413
62313
72313
82313
92313
102313
112313
122313
132313
142313
152313
162313
172313
182313
192313
202313
212312
222312
232312
242312
252312
262312
272312
282312
292312
302312

Zacatecas weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 2nd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan19° / 162.610.87.5
Feb21° / 131.911.28.1
Mar24° / 81.911.88.6
Apr26° / 11°102.712.58.0
May28° / 13°315.713.17.3
Jun27° / 14°9010.713.46.6
Jul25° / 13°12412.613.36.6
Aug25° / 13°9911.512.86.7
Sep23° / 13°10712.612.16.4
Oct23° / 10°375.911.57.7
Nov21° / 152.510.98.1
Dec20° / 81.610.67.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 26% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 21% of September, with mostly cloudy or overcast conditions the remaining 52%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14753
24753
34654
44654
54555
64555
74555
84555
94555
104555
114555
124654
134654
144555
154654
164753
174753
184753
194753
204753
214753
224852
234951
245050
255149
265149
275248
285446
295545
305545

Chance of precipitation in September

Any precipitation

Zacatecas gets around 107 mm of rain over 12.6 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 41% and peaks near 47% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
147
247
347
447
547
647
747
847
946
1046
1145
1245
1344
1444
1543
1643
1742
1841
1941
2040
2139
2238
2337
2436
2535
2633
2732
2831
2930
3029

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 74% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
17129
27030
37030
46931
56931
66931
76931
86931
96931
107030
117030
127030
137030
147129
157129
167228
177228
187327
197426
207525
217624
227723
237822
247921
258020
268119
278317
288416
298515
308614

Wind in September

Winds average 11 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 30 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 42 minutes over September. Sunrise moves from 6:36 AM to 6:45 AM, and sunset from 7:04 PM to 6:34 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.56:367:04
212.46:367:03
312.46:377:02
412.46:377:01
512.46:377:00
612.46:386:59
712.36:386:58
812.36:386:57
912.36:396:56
1012.36:396:55
1112.26:396:54
1212.26:406:53
1312.26:406:52
1412.26:406:51
1512.26:406:50
1612.16:416:49
1712.16:416:47
1812.16:416:46
1912.16:426:45
2012.06:426:44
2112.06:426:43
2212.06:436:42
2312.06:436:41
2411.96:436:40
2511.96:446:39
2611.96:446:38
2711.96:446:37
2811.96:456:36
2911.86:456:35
3011.86:456:34

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.65 kWh/m².

For context, solar energy here swings from a low near 4.63 kWh/m² to a high of 7.74 kWh/m² in May across the year — September's 5.65 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
16.0Bright
25.9Bright
35.9Bright
45.9Bright
55.8Bright
65.8Bright
75.8Bright
85.8Bright
95.8Bright
105.7Bright
115.7Bright
125.7Bright
135.7Bright
145.7Bright
155.7Bright
165.7Bright
175.7Bright
185.7Bright
195.7Bright
205.7Bright
215.6Bright
225.6Bright
235.6Bright
245.6Bright
255.6Bright
265.6Bright
275.6Bright
285.6Bright
295.6Bright
305.6Bright
Planning a trip in September

Hazard calendar for Zacatecas

In seasonPeak

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

Zacatecas'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 Zacatecas?

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

6.4
Sightseeing
12th-best month of the year
5.2
Beach & pool
9th-best month of the year

September is a reasonable time to visit Zacatecas for sightseeing.

What to pack for Zacatecas in September

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

In September, Zacatecas sees daytime highs around 23°C and nights near 13°C. Worth packing: light clothes, rain gear and sun protection. About 13 days see rain.

light clothesrain gearsun protection

UV index in Zacatecas 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 Zacatecas peaks around May 14 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 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 highHighMay 14UV 14Dec 19UV 7
UV index (midday)Level
Jan7Very high
Feb10Very high
Mar12Extreme
Apr14Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep13Extreme
Oct10Extreme
Nov7Very high
Dec7High
Location & terrain

Where is Zacatecas?

Zacatecas sits at 22.8°N, 102.6°W, 2,480 m above sea level, in Mexico. The nearest listed city is Guadalupe, 7.0 km away.

Topography around Zacatecas

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

Within 3 km, the terrain around Zacatecas has significant variations in elevation — a maximum elevation change of 333 m around an average of 2,461 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 578 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,339 m.

The land around Zacatecas is covered by artificial surfaces (49%) and shrubs (43%) within 3 km, shrubs (40%) and cropland (40%) within 16 km, and shrubs (51%) and cropland (33%) within 80 km.

3 km
333 m
16 km
578 m
80 km
1,339 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Guadalupe 7.0 km · Víctor Rosales 24 km · Jerez de García Salinas 44 km · Fresnillo 54 km · Rincón de Romos 66 km · Pabellón de Arteaga 76 km · Loreto 82 km · San Francisco de los Romo 84 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 Zacatecas (22.7684°, -102.5814°, elevation 2,480 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).