Frontera weather in September

In September, Frontera sees average daytime highs of 31°C and overnight lows near 25°C, with 231 mm of rain across 24.5 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 17% 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 Frontera's 12th-clearest and 12th-windiest month. For the whole year in context, see Frontera's year-round climate.

Daytime high
31°
6th warmest
Overnight low
25°
8th coldest
Rainfall
231 mm
24.5 wet days
Daylight
12 h 06 min
6:02 AM – 6:08 PM
Cloud cover
71%
12th clearest
Wind
11 km/h
12th windiest
Solar energy
5.47 kWh/m²
Travel score
3.0
out of 10

Frontera is municipal seat of Centla, State of Tabasco, Mexico.

Density
3,799/km²
people per km²
Founded
1780

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 Frontera reaches about 31°C in the afternoon and slips back to 25°C overnight — a 5°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 32°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°151015202530
Avg high (°C)Avg low (°C)
13126
23126
33126
43126
53126
63126
73126
83126
93126
103125
113125
123125
133125
143125
153125
163125
173125
183125
193125
203125
213125
223025
233025
243025
253025
263025
273025
283025
293025
303025

How September really feels in Frontera

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
heat index over the day's high
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.

Frontera 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
Jan27° / 22°558.9117.0
Feb28° / 22°345.911.46.9
Mar30° / 24°194.111.95.8
Apr33° / 25°224.612.44.5
May33° / 27°558.812.93.5
Jun32° / 26°16918.513.13.1
Jul32° / 26°10315.7133.4
Aug32° / 26°15719.812.63.1
Sep31° / 25°23124.512.13.0
Oct29° / 25°20719.311.64.2
Nov28° / 23°10613.111.15.8
Dec27° / 22°588.810.96.9

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 17% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 16% of September, with mostly cloudy or overcast conditions the remaining 67%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
13466
23565
33565
43565
53466
63466
73367
83367
93367
103367
113367
123367
133367
143367
153466
163466
173466
183466
193367
203367
213367
223268
233367
243268
253169
263268
273268
283367
293367
303466

Chance of precipitation in September

Any precipitation

Frontera gets around 231 mm of rain over 24.5 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 81% and peaks near 83% on the wettest days.

0%20%40%60%80%151015202530
Rain chance (%)
178
278
379
479
579
680
780
880
980
1081
1181
1281
1381
1482
1582
1682
1782
1882
1983
2083
2183
2283
2383
2483
2582
2682
2781
2880
2979
3078

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 83% 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
301486
401486
501486
601486
701486
801486
901486
1001486
1101486
1201486
1301387
1401387
1501387
1601486
1701486
1801486
1901585
2001684
2101783
2201882
2301981
2402080
2502179
2612277
2712376
2812475
2912574
3012673

Wind in September

Winds average 11 km/h in September, the calmest month.

Across September, daily wind ranges from about 11 km/h on the calmest days to 12 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
112calm
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 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 5:59 AM to 6:04 AM, and sunset from 6:21 PM to 5:55 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.45:596:21
212.45:596:21
312.36:006:20
412.36:006:19
512.36:006:18
612.36:006:17
712.36:006:16
812.26:006:15
912.26:016:14
1012.26:016:13
1112.26:016:13
1212.26:016:12
1312.26:016:11
1412.16:016:10
1512.16:026:09
1612.16:026:08
1712.16:026:07
1812.16:026:06
1912.06:026:05
2012.06:026:04
2112.06:036:03
2212.06:036:03
2312.06:036:02
2412.06:036:01
2511.96:036:00
2611.96:045:59
2711.96:045:58
2811.96:045:57
2911.96:045:56
3011.96:045:55

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.47 kWh/m².

For context, solar energy here swings from a low near 4.13 kWh/m² to a high of 6.87 kWh/m² in May across the year — September's 5.47 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.9Bright
25.9Bright
35.9Bright
45.8Bright
55.8Bright
65.8Bright
75.8Bright
85.7Bright
95.7Bright
105.7Bright
115.7Bright
125.6Bright
135.6Bright
145.6Bright
155.5Bright
165.5Bright
175.5Bright
185.4Bright
195.4Bright
205.4Bright
215.3Bright
225.3Bright
235.2Bright
245.2Bright
255.2Bright
265.1Bright
275.1Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Frontera

In seasonPeak

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

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

Frontera's rainy season runs August–November, when most of the year's rain falls.

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

Is September a good time to visit Frontera?

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

3.0
Sightseeing
12th-best month of the year
4.4
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Frontera.

What to pack for Frontera in September

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

In September, Frontera 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 Frontera 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 offshore is warmest in September at about 29°C and coldest in January near 25°C.

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

24°26°28°30°JanFebMarAprMayJunJulAugSepOctNovDecrefreshingwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan25Warm
Feb25Warm
Mar26Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul28Tropical
Aug29Tropical
Sep29Tropical
Oct29Tropical
Nov27Warm
Dec26Warm

UV index in Frontera 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 Frontera peaks around August 17 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near January 1 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 highExtremeVery highAug 17UV 13Jan 1UV 7
UV index (midday)Level
Jan7High
Feb10Extreme
Mar12Extreme
Apr13Extreme
May7High
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Frontera 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 Frontera is worst in May — around 39 µg/m³ PM2.5 (poor), about 4.0× the cleanest month (November, 10 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateGoodMay 1638 µg/m³Nov 2010 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb13Moderate
Mar17Moderate
Apr31Moderate
May39Poor
Jun30Moderate
Jul30Moderate
Aug23Moderate
Sep17Moderate
Oct11Good
Nov10Good
Dec10Good
Location & terrain

Where is Frontera?

Frontera sits at 18.5°N, 92.6°W, 5 m above sea level, in Mexico. The nearest listed city is Taxco, 59 km away.

Topography around Frontera

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

Within 3 km, the terrain around Frontera has only modest variations in elevation — a maximum elevation change of 18 m around an average of 2 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 23 m; within 80 km, only modest variations in elevation — a maximum elevation change of 85 m.

The land around Frontera is covered by mangroves (26%) and grassland (25%) within 3 km, water (32%) and wetland (32%) within 16 km, and water (38%) and wetland (29%) within 80 km.

3 km
18 m
16 km
23 m
80 km
85 m
treesgrasslandartificial surfaceswaterwetlandmangroves
September weather nearby: Taxco 59 km · Jalpa de Méndez 60 km · Paraiso 62 km · Comalcalco 68 km · Villahermosa 69 km · Cunduacán 77 km · Playas del Rosario 83 km · Ciudad del Carmen 87 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 Frontera (18.5433°, -92.6453°, elevation 5 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).