Agua Dulce weather in September

In September, Agua Dulce sees average daytime highs of 29°C and overnight lows near 25°C, with 361 mm of rain across 27.1 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 29°C through the month. The sky is clear or mostly clear about 12% 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 Agua Dulce's 12th-clearest and 12th-windiest month. For the whole year in context, see Agua Dulce's year-round climate.

Daytime high
29°
6th warmest
Overnight low
25°
8th coldest
Rainfall
361 mm
27.1 wet days
Daylight
12 h 06 min
6:08 AM – 6:14 PM
Cloud cover
76%
12th clearest
Wind
11 km/h
12th windiest
Solar energy
4.91 kWh/m²
Travel score
3.2
out of 10

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 29°C through the month.

A typical September day in Agua Dulce reaches about 29°C in the afternoon and slips back to 25°C overnight — a 4°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 31°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)
12926
22926
32925
42925
52925
62925
72925
82925
92925
102925
112925
122925
132925
142925
152925
162925
172925
182925
192925
202925
212925
222925
232925
242925
252925
262925
272925
282925
292925
302925

How September really feels in Agua Dulce

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.

Agua Dulce 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
Jan25° / 21°9812.7116.6
Feb26° / 22°517.911.47.2
Mar27° / 23°315.911.97.3
Apr30° / 25°305.312.46.1
May30° / 26°7310.712.84.9
Jun30° / 26°23422.513.13.5
Jul30° / 26°24225133.4
Aug29° / 26°30026.912.63.2
Sep29° / 25°36127.112.13.2
Oct28° / 25°29822.211.64.4
Nov27° / 23°18516.611.15.6
Dec25° / 22°11014.810.96.2

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 12% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 14% of September, with mostly cloudy or overcast conditions the remaining 74%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12674
22575
32575
42575
52575
62575
72575
82575
92575
102575
112575
122575
132674
142674
152575
162575
172575
182674
192674
202674
212674
222674
232674
242674
252773
262773
272872
282872
292971
303070

Chance of precipitation in September

Any precipitation

Agua Dulce gets around 361 mm of rain over 27.1 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 90% and peaks near 91% on the wettest days.

0%20%40%60%80%100%151015202530
Rain chance (%)
189
290
390
490
590
691
791
891
991
1091
1191
1291
1391
1491
1591
1691
1791
1890
1990
2090
2190
2290
2389
2489
2588
2688
2787
2886
2985
3084

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 80% of days. Sticky, muggy-or-worse air turns up on roughly 100% of them.

0%25%50%75%100%151015202530
Muggy (%)Oppressive (%)Miserable (%)
10991
201090
301189
401189
501288
601288
701387
801387
901486
1001486
1101585
1201585
1301684
1401684
1501783
1601783
1701882
1801981
1902080
2002179
2112277
2212376
2312475
2412673
2522771
2622969
2723068
2823167
2933265
3033364

Wind in September

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

Across September, daily wind ranges from about 10 km/h on the calmest days to 13 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
110calm
210calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2212calm
2312calm
2412calm
2512calm
2612light breeze
2712light breeze
2812light breeze
2913light breeze
3013light breeze

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 6:05 AM to 6:10 AM, and sunset from 6:27 PM to 6:02 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:056:27
212.36:066:26
312.36:066:25
412.36:066:25
512.36:066:24
612.36:066:23
712.36:066:22
812.26:076:21
912.26:076:20
1012.26:076:19
1112.26:076:18
1212.26:076:18
1312.26:076:17
1412.16:086:16
1512.16:086:15
1612.16:086:14
1712.16:086:13
1812.16:086:12
1912.06:086:11
2012.06:086:10
2112.06:096:09
2212.06:096:09
2312.06:096:08
2412.06:096:07
2511.96:096:06
2611.96:106:05
2711.96:106:04
2811.96:106:03
2911.96:106:02
3011.96:106:02

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.91 kWh/m².

For context, solar energy here swings from a low near 3.66 kWh/m² to a high of 6.66 kWh/m² in May across the year — September's 4.91 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.3Bright
25.3Bright
35.3Bright
45.2Bright
55.2Bright
65.2Bright
75.2Bright
85.1Bright
95.1Bright
105.1Bright
115.1Bright
125.0Bright
135.0Bright
145.0Bright
155.0Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.8Bright
214.8Bright
224.8Bright
234.7Bright
244.7Bright
254.7Bright
264.7Bright
274.6Bright
284.6Bright
294.6Bright
304.6Bright
Planning a trip in September

Hazard calendar for Agua Dulce

In seasonPeak

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

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

Agua Dulce's rainy season runs June–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 Agua Dulce?

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

3.2
Sightseeing
11th-best month of the year
4.1
Beach & pool
12th-best month of the year

September is a weaker month for outdoor sightseeing in Agua Dulce.

What to pack for Agua Dulce in September

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

In September, Agua Dulce sees daytime highs around 29°C and nights near 25°C. Pack light clothes and rain gear. Worth having: sun protection. About 27 days see rain.

light clothesrain gearsun protection

Sea temperature near Agua Dulce 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 24 km away) is warmest in September at about 29°C and coldest in February near 24°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
Jan24Warm
Feb24Warm
Mar25Warm
Apr27Warm
May28Tropical
Jun29Tropical
Jul29Tropical
Aug29Tropical
Sep29Tropical
Oct28Tropical
Nov27Warm
Dec25Warm

UV index in Agua Dulce 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 Agua Dulce peaks around August 16 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 21 at about 7 (very high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeExtremeVery highAug 16UV 12Dec 21UV 7
UV index (midday)Level
Jan7Very high
Feb10Extreme
Mar12Extreme
Apr13Extreme
May8Very high
Jun13Extreme
Jul11Extreme
Aug13Extreme
Sep11Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Agua Dulce 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 Agua Dulce is worst in May — around 43 µg/m³ PM2.5 (poor), about 2.7× the cleanest month (January, 16 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1842 µg/m³Jan 1816 µg/m³
PM2.5 (µg/m³)Level
Jan16Moderate
Feb17Moderate
Mar22Moderate
Apr31Moderate
May43Poor
Jun34Moderate
Jul36Poor
Aug29Moderate
Sep25Moderate
Oct18Moderate
Nov17Moderate
Dec18Moderate
Location & terrain

Where is Agua Dulce?

Agua Dulce sits at 18.1°N, 94.1°W, 21 m above sea level, in Mexico. The nearest listed city is Las Choapas, 26 km away.

Topography around Agua Dulce

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

Within 3 km, the terrain around Agua Dulce has only modest variations in elevation — a maximum elevation change of 39 m around an average of 15 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 153 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,652 m.

The land around Agua Dulce is covered by trees (57%) and grassland (25%) within 3 km, trees (33%), grassland (24%) and water (23%) within 16 km, and grassland (35%), water (30%) and trees (24%) within 80 km.

3 km
39 m
16 km
153 m
80 km
1,652 m
treesgrasslandcroplandartificial surfaceswaterwetlandmangroves
September weather nearby: Las Choapas 26 km · Allende 26 km · Nanchital de Lázaro Cárdenas del Río 29 km · Coatzacoalcos 32 km · Fraccionamiento Ciudad Olmeca 43 km · Minatitlán 46 km · Cosoleacaque 54 km · Jáltipan de Morelos 63 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 Agua Dulce (18.1391°, -94.1453°, elevation 21 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).