Ixtepec weather in September

In September, Ixtepec sees average daytime highs of 32°C and overnight lows near 24°C, with 195 mm of rain across 17.3 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 1st-wettest month of the year here.

Day-to-day highs hold fairly steady near 32°C through the month. The sky is clear or mostly clear about 9% of the time in September, and the air most often feels oppressive.

Daylight stretches from about 12 h 18 min at the start of September to 11 h 54 min by month's end. Set against the rest of the year, September is Ixtepec's 12th-clearest and 11th-windiest month. For the whole year in context, see Ixtepec's year-round climate.

Daytime high
32°
7th warmest
Overnight low
24°
8th coldest
Rainfall
195 mm
17.3 wet days
Daylight
12 h 06 min
6:12 AM – 6:17 PM
Cloud cover
79%
12th clearest
Wind
12 km/h
11th windiest
Solar energy
5.19 kWh/m²
Travel score
3.0
out of 10

Ixtepec is municipal seat of Ixtepec, State of Oaxaca, Mexico.

Density
111/km²
people per km²
Founded
1550

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 32°C through the month.

A typical September day in Ixtepec reaches about 32°C in the afternoon and slips back to 24°C overnight — a 8°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 35°C. Set against its neighbours, September runs about 1°C cooler than August and about 1°C warmer than October.

20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13324
23324
33324
43324
53324
63324
73324
83324
93324
103324
113324
123224
133224
143224
153224
163224
173224
183224
193224
203224
213224
223224
233224
243224
253224
263224
273224
283224
293224
303224

How September really feels in Ixtepec

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.

Ixtepec weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan29° / 20°30.911.17.1
Feb31° / 21°30.911.46.1
Mar33° / 22°41.311.94.8
Apr34° / 24°71.812.43.6
May35° / 25°519.212.82.8
Jun33° / 25°18917.6132.7
Jul34° / 25°10712.712.92.9
Aug33° / 25°14615.412.62.8
Sep32° / 24°19517.312.13.0
Oct32° / 24°758.711.64.3
Nov31° / 22°142.311.25.8
Dec30° / 21°41.1116.7

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 13% of September, with mostly cloudy or overcast conditions the remaining 78%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12476
22278
32278
42278
52377
62377
72377
82278
92278
102278
112278
122278
132278
142278
152179
162179
172179
182179
192080
202179
212179
222179
232179
242278
252278
262278
272476
282476
292674
302773

Chance of precipitation in September

Any precipitation

Ixtepec gets around 195 mm of rain over 17.3 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 56% and peaks near 59% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%151015202530
Rain chance (%)
158
259
359
459
559
659
759
859
959
1059
1159
1259
1359
1459
1559
1658
1758
1858
1958
2057
2156
2255
2354
2453
2552
2651
2749
2848
2947
3046

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the oppressive band about 69% of days. Sticky, muggy-or-worse air turns up on roughly 99% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10047224
20047224
30037324
40037324
50037324
60037324
70037324
80037324
90037324
100037324
110047224
120047224
130047323
140057223
150057223
160067123
170067123
180077023
190077023
200186823
210196723
2201106722
2301116622
2401126522
2502136421
2602146321
2712156220
2812166120
2913176019
3013185919

Wind in September

Winds average 12 km/h in September.

Across September, daily wind ranges from about 11 km/h on the calmest days to 14 km/h at its breeziest. It stays fairly steady from day to day.

05101520151015202530
Wind speed (km/h)Feels
112calm
211calm
311calm
411calm
511calm
611calm
712calm
812calm
912calm
1012calm
1112calm
1212calm
1312calm
1412calm
1512light breeze
1612light breeze
1712light breeze
1812light breeze
1912light breeze
2012light breeze
2113light breeze
2213light breeze
2313light breeze
2413light breeze
2513light breeze
2613light breeze
2713light breeze
2814light breeze
2914light breeze
3014light breeze

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 18 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 24 minutes over September. Sunrise moves from 6:10 AM to 6:14 AM, and sunset from 6:30 PM to 6:06 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.36:106:30
212.36:106:29
312.36:116:28
412.36:116:28
512.36:116:27
612.26:116:26
712.26:116:25
812.26:116:24
912.26:116:23
1012.26:116:23
1112.26:116:22
1212.26:126:21
1312.16:126:20
1412.16:126:19
1512.16:126:18
1612.16:126:17
1712.16:126:17
1812.16:126:16
1912.06:126:15
2012.06:126:14
2112.06:136:13
2212.06:136:12
2312.06:136:12
2412.06:136:11
2511.96:136:10
2611.96:136:09
2711.96:136:08
2811.96:136:07
2911.96:146:07
3011.96:146:06

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.19 kWh/m².

For context, solar energy here swings from a low near 4.91 kWh/m² to a high of 6.86 kWh/m² in April across the year — September's 5.19 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.5Bright
25.5Bright
35.5Bright
45.5Bright
55.4Bright
65.4Bright
75.4Bright
85.4Bright
95.4Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.1Bright
215.1Bright
225.1Bright
235.1Bright
245.1Bright
255.0Bright
265.0Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Ixtepec

In seasonPeak

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

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

Ixtepec's monsoon runs June–September, 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 Ixtepec?

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

3.0
Sightseeing
8th-best month of the year
5.1
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Ixtepec.

What to pack for Ixtepec in September

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

In September, Ixtepec sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 17 days see rain.

light clothesrain gearsun protection

Sea temperature near Ixtepec in September

The nearest coast averages about 30°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 48 km away) is warmest in August at about 30°C and coldest in January near 26°C.

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

24°26°28°30°32°JanFebMarAprMayJunJulAugSepOctNovDecwarmtropicalcomfortable to swim
Sea temperature (°C)Comfort
Jan26Warm
Feb26Warm
Mar27Warm
Apr28Tropical
May29Tropical
Jun30Tropical
Jul30Tropical
Aug30Tropical
Sep30Tropical
Oct29Tropical
Nov27Warm
Dec27Warm

UV index in Ixtepec 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 Ixtepec peaks around April 13 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 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 13UV 13Dec 18UV 8
UV index (midday)Level
Jan8Very high
Feb12Extreme
Mar12Extreme
Apr13Extreme
May12Extreme
Jun13Extreme
Jul12Extreme
Aug13Extreme
Sep11Extreme
Oct11Extreme
Nov9Very high
Dec8Very high

Air quality in Ixtepec 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 Ixtepec is worst in May — around 32 µg/m³ PM2.5 (moderate), about 3.9× the cleanest month (November, 8 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodMay 1531 µg/m³Nov 238 µg/m³
PM2.5 (µg/m³)Level
Jan8Good
Feb9Good
Mar14Moderate
Apr25Moderate
May32Moderate
Jun21Moderate
Jul27Moderate
Aug20Moderate
Sep18Moderate
Oct11Good
Nov8Good
Dec8Good
Location & terrain

Where is Ixtepec?

Ixtepec sits at 16.6°N, 95.1°W, 68 m above sea level, in Mexico. The nearest listed city is Heroica Ciudad de Juchitán de Zaragoza, 17 km away.

Topography around Ixtepec

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

Within 3 km, the terrain around Ixtepec has only modest variations in elevation — a maximum elevation change of 42 m around an average of 61 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,209 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,818 m.

The land around Ixtepec is covered by grassland (28%) and artificial surfaces (23%) within 3 km, trees (48%) and grassland (23%) within 16 km, and trees (51%) within 80 km.

3 km
42 m
16 km
1,209 m
80 km
2,818 m
treesshrubsgrasslandcroplandartificial surfaceswatermangroves
September weather nearby: Heroica Ciudad de Juchitán de Zaragoza 17 km · Santo Domingo Tehuantepec 30 km · Matías Romero Avendaño 36 km · Salina Cruz 44 km · Arriaga 133 km · Crucecita 141 km · Cintalapa de Figueroa 148 km · Tonalá 153 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 Ixtepec (16.5605°, -95.1038°, elevation 68 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).