Tetla weather in September

In September, Tetla sees average daytime highs of 20°C and overnight lows near 11°C, with 135 mm of rain across 18.9 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 20°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 Tetla's 12th-clearest and 7th-windiest month. For the whole year in context, see Tetla's year-round climate.

Daytime high
20°
7th warmest
Overnight low
11°
11th coldest
Rainfall
135 mm
18.9 wet days
Daylight
12 h 06 min
6:23 AM – 6:30 PM
Cloud cover
76%
12th clearest
Wind
7 km/h
7th windiest
Solar energy
5.12 kWh/m²
Travel score
4.9
out of 10

Tetla is municipal seat of Tetla, State of Tlaxcala, 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 20°C through the month.

A typical September day in Tetla reaches about 20°C in the afternoon and slips back to 11°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 18°C and 23°C. Set against its neighbours, September runs about 1°C cooler than August and on par with October.

10°15°20°25°151015202530
Avg high (°C)Avg low (°C)
12111
22111
32111
42111
52111
62011
72011
82011
92011
102011
112011
122011
132011
142011
152011
162011
172011
182011
192011
202011
212011
222010
232010
242010
252010
262010
272010
282010
292010
302010

Tetla 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° / 133117.4
Feb20° / 13311.37.8
Mar22° / 318.111.97.4
Apr23° / 5812.312.46.6
May23° / 10°8916.112.96.0
Jun22° / 11°14218.813.15.1
Jul21° / 10°11218.413.15.1
Aug21° / 10°12219.112.75.1
Sep20° / 11°13518.912.14.9
Oct20° / 6810.911.66.1
Nov19° / 245.511.17.0
Dec19° / 82.310.87.6

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 15% of September, with mostly cloudy or overcast conditions the remaining 76%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12377
22278
32278
42278
52278
62278
72278
82179
92278
102278
112278
122377
132377
142377
152476
162476
172476
182476
192476
202476
212476
222575
232674
242674
252674
262872
272872
282872
292971
302971

Chance of precipitation in September

Any precipitation

Tetla gets around 135 mm of rain over 18.9 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 62% and peaks near 68% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
168
268
368
468
568
668
768
868
967
1066
1166
1265
1364
1464
1563
1662
1761
1861
1960
2059
2158
2258
2357
2456
2555
2654
2753
2852
2952
3051

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 95% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)
1964
2964
3955
4955
5955
6955
7955
8955
9946
10946
11946
12946
13946
14946
15946
16946
17946
18955
19955
20955
21955
22955
23964
24964
25964
26964
27964
28973
29973
30973

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 7 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
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
237calm
247calm
257calm
267calm
277calm
287calm
297calm
307calm

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 6:20 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)
112.46:206:44
212.46:216:43
312.46:216:42
412.36:216:41
512.36:216:40
612.36:226:39
712.36:226:38
812.36:226:37
912.26:226:37
1012.26:226:36
1112.26:226:35
1212.26:236:34
1312.26:236:33
1412.16:236:32
1512.16:236:31
1612.16:236:30
1712.16:246:29
1812.16:246:28
1912.16:246:27
2012.06:246:26
2112.06:246:25
2212.06:256:24
2312.06:256:23
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 5.12 kWh/m².

For context, solar energy here swings from a low near 4.75 kWh/m² to a high of 6.74 kWh/m² in April across the year — September's 5.12 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.2Bright
105.2Bright
115.2Bright
125.2Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.1Bright
185.1Bright
195.1Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.0Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Tetla

In seasonPeak

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

Tetla's rainy season runs May–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 Tetla?

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

4.9
Sightseeing
12th-best month of the year
2.7
Beach & pool
12th-best month of the year

September is a reasonable time to visit Tetla for sightseeing.

What to pack for Tetla in September

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

In September, Tetla sees daytime highs around 20°C and nights near 11°C. Pack rain gear. Worth having: sun protection. About 19 days see rain.

rain gearsun protection

UV index in Tetla 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 Tetla peaks around April 12 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 at about 8 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highApr 12UV 15Dec 16UV 8
UV index (midday)Level
Jan9Very high
Feb12Extreme
Mar14Extreme
Apr15Extreme
May10Extreme
Jun14Extreme
Jul13Extreme
Aug14Extreme
Sep12Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Tetla 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 Tetla is worst in December — around 165 µg/m³ PM2.5 (very unhealthy), and holds fairly steady the rest of the year.

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

0306090120150180JanFebMarAprMayJunJulAugSepOctNovDecUnhealthyVery unhealthyDec 13163 µg/m³Aug 15114 µg/m³
PM2.5 (µg/m³)Level
Jan137Unhealthy
Feb131Unhealthy
Mar122Unhealthy
Apr120Unhealthy
May143Unhealthy
Jun121Unhealthy
Jul118Unhealthy
Aug113Unhealthy
Sep120Unhealthy
Oct121Unhealthy
Nov155Very unhealthy
Dec165Very unhealthy
Location & terrain

Where is Tetla?

Tetla sits at 19.4°N, 98.1°W, 2,453 m above sea level, in Mexico. The nearest listed city is Apizaco, 5.0 km away.

Topography around Tetla

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

Within 3 km, the terrain around Tetla has significant variations in elevation — a maximum elevation change of 314 m around an average of 2,474 m above sea level; within 16 km, large variations in elevation — a maximum elevation change of 850 m; within 80 km, extreme variations in elevation — a maximum elevation change of 5,021 m.

The land around Tetla is covered by trees (31%) and cropland (30%) within 3 km, cropland (44%), grassland (23%) and trees (21%) within 16 km, and trees (33%) and cropland (33%) within 80 km.

3 km
314 m
16 km
850 m
80 km
5,021 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Apizaco 5.0 km · Contla 14 km · Santa Ana Chiautempan 17 km · Tlaxcala 20 km · La Magdalena Tlaltelulco 20 km · Huamantla 23 km · Teolocholco 24 km · Zacatelco 29 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 Tetla (19.442°, -98.1033°, elevation 2,453 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).