Tlacotalpan weather in September

In September, Tlacotalpan sees average daytime highs of 31°C and overnight lows near 25°C, with 318 mm of rain across 24.9 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 14% of the time in September, and the air most often feels miserable.

Daylight stretches from about 12 h 24 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Tlacotalpan's 12th-clearest and 10th-windiest month. For the whole year in context, see Tlacotalpan's year-round climate.

Daytime high
31°
6th warmest
Overnight low
25°
8th coldest
Rainfall
318 mm
24.9 wet days
Daylight
12 h 06 min
6:14 AM – 6:20 PM
Cloud cover
75%
12th clearest
Wind
7 km/h
10th windiest
Solar energy
4.7 kWh/m²
Travel score
2.8
out of 10

Tlacotalpan is municipal seat of Tlacotalpan, State of Veracruz, Mexico.

Founded
1847

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 31°C through the month.

A typical September day in Tlacotalpan reaches about 31°C in the afternoon and slips back to 25°C overnight — a 7°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, September runs on par with August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13225
23225
33225
43225
53125
63125
73125
83125
93125
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223125
233125
243125
253124
263124
273124
283124
293124
303124

How September really feels in Tlacotalpan

Once humidity and wind are folded in, September averages 30 days that feel above 32°C and 0 that feel at or below 0°C — the comfort signal a plain temperature reading hides.

Days feeling ≥ 32°C
30
4 feel dangerously hot (≥ 39°C)
Days feeling ≤ C
0
wind chill below the day's low

The story in September is heat — humidity pushes the afternoon "feels like" well above the raw temperature.

Tlacotalpan weather by month

How September compares with the rest of the year at a glance. September is the 6th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan26° / 19°407.9117.1
Feb27° / 20°285.111.47.1
Mar30° / 22°234.511.96.0
Apr33° / 24°254.512.44.4
May34° / 25°649.612.93.3
Jun33° / 25°23522.513.12.6
Jul32° / 25°26525132.8
Aug32° / 25°27125.112.62.7
Sep31° / 25°31824.912.12.8
Oct30° / 24°20218.811.64.0
Nov28° / 22°951311.15.8
Dec26° / 20°448.710.96.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 14% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 13% of September, with mostly cloudy or overcast conditions the remaining 73%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22575
32575
42575
52575
62575
72575
82575
92674
102575
112575
122575
132674
142773
152773
162773
172773
182872
192872
202872
212872
222872
232872
242971
253070
263070
273070
283070
293070
303070

Chance of precipitation in September

Any precipitation

Tlacotalpan gets around 318 mm of rain over 24.9 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 82% and peaks near 86% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%100%151015202530
Rain chance (%)
185
285
385
485
585
685
786
886
986
1086
1186
1286
1385
1485
1584
1684
1783
1882
1982
2081
2181
2280
2379
2479
2578
2677
2776
2875
2975
3074

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the miserable band about 75% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
101585
201585
311584
411584
511584
611683
711683
811683
911782
1011782
1111881
1211881
1311980
1412079
1512178
1612277
1712376
1812475
1912574
2012673
2112772
2222870
2322969
2433067
2533166
2643363
2743462
2843561
2953560
3053659

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.

051015151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
57calm
67calm
77calm
87calm
97calm
107calm
117calm
127calm
137calm
147calm
157calm
167calm
177calm
187calm
197calm
207calm
217calm
227calm
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 54 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 30 minutes over September. Sunrise moves from 6:11 AM to 6:16 AM, and sunset from 6:33 PM to 6:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:116:33
212.46:116:33
312.36:126:32
412.36:126:31
512.36:126:30
612.36:126:29
712.36:126:28
812.26:126:27
912.26:136:26
1012.26:136:26
1112.26:136:25
1212.26:136:24
1312.26:136:23
1412.16:136:22
1512.16:146:21
1612.16:146:20
1712.16:146:19
1812.16:146:18
1912.06:146:17
2012.06:156:16
2112.06:156:16
2212.06:156:15
2312.06:156:14
2412.06:156:13
2511.96:156:12
2611.96:166:11
2711.96:166:10
2811.96:166:09
2911.96:166:08
3011.96:166:07

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.7 kWh/m².

For context, solar energy here swings from a low near 3.47 kWh/m² to a high of 6.49 kWh/m² in May across the year — September's 4.7 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.1Bright
25.1Bright
35.0Bright
45.0Bright
55.0Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.8Bright
114.8Bright
124.8Bright
134.8Bright
144.8Bright
154.7Bright
164.7Bright
174.7Bright
184.7Bright
194.7Bright
204.6Bright
214.6Bright
224.6Bright
234.6Bright
244.5Bright
254.5Bright
264.5Bright
274.5Bright
284.5Bright
294.5Bright
304.4Bright
Planning a trip in September

Hazard calendar for Tlacotalpan

In seasonPeak

In September, Tlacotalpan sits inside its atlantic hurricane and monsoon season. The full year is below, with each hazard's peak months called out.

Tlacotalpan sits in the Atlantic hurricane belt; the season peaks August–October.

Tlacotalpan's monsoon runs June–October, when most of the year's rain falls.

Atlantic hurricane
Monsoon
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Is September a good time to visit Tlacotalpan?

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

2.8
Sightseeing
9th-best month of the year
4.2
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Tlacotalpan.

What to pack for Tlacotalpan in September

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

In September, Tlacotalpan sees daytime highs around 31°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 25 days see rain.

light clothesrain gearsun protection

Sea temperature near Tlacotalpan in September

The nearest coast averages about 29°C in September — the other half of the beach question. The full-year curve and swim-comfort zones are below.

The sea at the nearest coast (about 29 km away) is warmest in August at about 29°C and coldest in February near 23°C.

The water stays above 20°C all year — warm enough for a swim any month.

22°24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan24Refreshing
Feb23Refreshing
Mar24Warm
Apr26Warm
May28Warm
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov27Warm
Dec25Warm

UV index in Tlacotalpan in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 11 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tlacotalpan peaks around August 17 at about 13 (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 highExtremeExtremeVery highHighAug 17UV 13Dec 19UV 7
UV index (midday)Level
Jan7Very high
Feb10Very high
Mar11Extreme
Apr13Extreme
May9Very high
Jun12Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct10Very high
Nov7Very high
Dec7High

Air quality in Tlacotalpan 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 Tlacotalpan is worst in May — around 40 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (November, 15 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1639 µg/m³Nov 1215 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb19Moderate
Mar22Moderate
Apr30Moderate
May40Poor
Jun29Moderate
Jul32Moderate
Aug24Moderate
Sep20Moderate
Oct16Moderate
Nov15Moderate
Dec17Moderate
Location & terrain

Where is Tlacotalpan?

Tlacotalpan sits at 18.6°N, 95.7°W, 0 m above sea level, in Mexico. The nearest listed city is Lerdo de Tejada, 15 km away.

Topography around Tlacotalpan

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

Within 3 km, the terrain around Tlacotalpan has only modest variations in elevation — a maximum elevation change of 9 m around an average of 1 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 88 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,630 m.

The land around Tlacotalpan is covered by wetland (49%) and grassland (35%) within 3 km, wetland (36%) and grassland (25%) within 16 km, and grassland (33%) and water (28%) within 80 km.

3 km
9 m
16 km
88 m
80 km
1,630 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Lerdo de Tejada 15 km · Alvarado 21 km · Carlos A. Carrillo 28 km · Cosamaloapan 31 km · Santiago Tuxtla 41 km · San Andrés Tuxtla 50 km · La Isla 52 km · Loma Bonita 61 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 Tlacotalpan (18.6133°, -95.6589°, elevation 0 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. Tropical-cyclone seasons are the published climatological basin seasons (NOAA National Hurricane Center / regional warning centres). Sea temperatures are the NOAA OISST v2.1 1991–2020 monthly climatology (public domain), sampled at the nearest ocean point. 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).