Ameca weather in September

In September, Ameca sees average daytime highs of 27°C and overnight lows near 17°C, with 176 mm of rain across 20.5 wet days and about 12.1 hours of daylight. It is the 7th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 27°C through the month. The sky is clear or mostly clear about 9% of the time in September, and the air most often feels humid.

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 Ameca's 12th-clearest and 10th-windiest month. For the whole year in context, see Ameca's year-round climate.

Daytime high
27°
7th warmest
Overnight low
17°
10th coldest
Rainfall
176 mm
20.5 wet days
Daylight
12 h 06 min
6:47 AM – 6:54 PM
Cloud cover
75%
12th clearest
Wind
4 km/h
10th windiest
Solar energy
5.27 kWh/m²
Travel score
4.8
out of 10

Ameca is municipal seat of Ameca, State of Jalisco, Mexico.

Density
2,410/km²
people per km²
Founded
1325

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 27°C through the month.

A typical September day in Ameca reaches about 27°C in the afternoon and slips back to 17°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 25°C and 29°C. Set against its neighbours, September runs on par with August and on par with October.

10°15°20°25°30°151015202530
Avg high (°C)Avg low (°C)
12717
22717
32717
42717
52717
62717
72717
82717
92717
102717
112717
122717
132717
142717
152717
162717
172717
182717
192717
202717
212717
222717
232717
242717
252717
262717
272716
282716
292716
302716

How September really feels in Ameca

Once humidity and wind are folded in, September averages 0 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
0
heat index over the day's high
Days feeling ≤ C
0
wind chill below the day's low

September sits comfortably in between — no days that feel dangerously hot or drop to a hard freeze once humidity and wind are folded in.

Ameca weather by month

How September compares with the rest of the year at a glance. September is the 7th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan24° / 20210.98.6
Feb26° / 141.611.38.4
Mar29° / 10°61.111.97.4
Apr31° / 12°4112.55.8
May32° / 15°164.1134.7
Jun30° / 17°15318.213.24.0
Jul27° / 17°21525.313.14.1
Aug27° / 17°19724.612.74.2
Sep27° / 17°17620.512.14.8
Oct27° / 15°639.111.56.7
Nov26° / 11°162.7118.3
Dec25° / 81.410.88.6

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 16% of September, with mostly cloudy or overcast conditions the remaining 75%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
12080
22080
32080
42179
52179
62278
72377
82476
92575
102575
112674
122674
132674
142674
152674
162674
172674
182674
192575
202575
212575
222674
232674
242773
252773
262971
273070
283070
293268
303367

Chance of precipitation in September

Any precipitation

Ameca gets around 176 mm of rain over 20.5 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 67% and peaks near 77% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
177
277
376
476
575
675
774
874
973
1073
1172
1271
1371
1470
1569
1669
1768
1867
1966
2065
2164
2263
2361
2460
2558
2656
2755
2853
2952
3050

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the humid band about 82% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)
105905
205914
315904
416894
516894
616894
717884
817884
917884
1018874
1118865
1219855
1319855
14110845
15110845
16110845
17111826
18111826
19112816
20112816
21213796
22213805
23314785
24415765
25516745
26517735
27617734
28718714
29819694
30820684

Wind in September

Winds average 4 km/h in September.

Across September, daily wind ranges from about 4 km/h on the calmest days to 5 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
14calm
24calm
34calm
44calm
54calm
64calm
74calm
84calm
94calm
104calm
114calm
124calm
134calm
144calm
154calm
164calm
174calm
184calm
194calm
204calm
214calm
224calm
234calm
245calm
255calm
265calm
275calm
285calm
295calm
305calm

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 6:44 AM to 6:50 AM, and sunset from 7:08 PM to 6:41 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:447:08
212.46:447:07
312.46:447:06
412.46:447:06
512.36:447:05
612.36:457:04
712.36:457:03
812.36:457:02
912.36:457:01
1012.26:467:00
1112.26:466:59
1212.26:466:58
1312.26:466:57
1412.26:476:56
1512.16:476:55
1612.16:476:54
1712.16:476:53
1812.16:476:52
1912.16:486:51
2012.06:486:50
2112.06:486:49
2212.06:486:48
2312.06:496:47
2412.06:496:46
2511.96:496:45
2611.96:496:44
2711.96:506:43
2811.96:506:42
2911.96:506:41
3011.86:506:41

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.27 kWh/m².

For context, solar energy here swings from a low near 4.7 kWh/m² to a high of 7.52 kWh/m² in April across the year — September's 5.27 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.4Bright
45.4Bright
55.4Bright
65.4Bright
75.3Bright
85.3Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.3Bright
145.3Bright
155.3Bright
165.3Bright
175.3Bright
185.3Bright
195.3Bright
205.3Bright
215.3Bright
225.3Bright
235.3Bright
245.3Bright
255.3Bright
265.3Bright
275.3Bright
285.3Bright
295.3Bright
305.3Bright
Planning a trip in September

Hazard calendar for Ameca

In seasonPeak

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

Ameca's monsoon runs June–September, when most of the year's rain falls.

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

Is September a good time to visit Ameca?

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

4.8
Sightseeing
8th-best month of the year
4.9
Beach & pool
10th-best month of the year

September is a reasonable time to visit Ameca for sightseeing.

What to pack for Ameca in September

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

In September, Ameca sees daytime highs around 27°C and nights near 17°C. Pack rain gear. Worth having: light clothes and sun protection. About 21 days see rain.

rain gearlight clothessun protection

UV index in Ameca 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 Ameca peaks around April 23 at about 13 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 16 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 highApr 23UV 13Dec 16UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr13Extreme
May13Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Extreme
Nov8Very high
Dec7High

Air quality in Ameca 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 Ameca is worst in May — around 41 µg/m³ PM2.5 (poor), about 4.7× the cleanest month (January, 9 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateModerateGoodMay 1638 µg/m³Jan 229 µg/m³
PM2.5 (µg/m³)Level
Jan9Good
Feb9Good
Mar11Good
Apr20Moderate
May41Poor
Jun18Moderate
Jul11Good
Aug11Good
Sep11Good
Oct10Good
Nov9Good
Dec10Good
Location & terrain

Where is Ameca?

Ameca sits at 20.5°N, 104.0°W, 1,244 m above sea level, in Mexico. The nearest listed city is Ahualulco de Mercado, 19 km away.

Topography around Ameca

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

Within 3 km, the terrain around Ameca has only modest variations in elevation — a maximum elevation change of 70 m around an average of 1,245 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,432 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,570 m.

The land around Ameca is covered by cropland (54%) and artificial surfaces (23%) within 3 km, trees (36%) and cropland (32%) within 16 km, and trees (51%) within 80 km.

3 km
70 m
16 km
1,432 m
80 km
2,570 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ahualulco de Mercado 19 km · Cocula 31 km · Tala 38 km · Magdalena 41 km · Tequila 43 km · El Salto 53 km · San Agustín 60 km · Zacoalco de Torres 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 Ameca (20.5478°, -104.0461°, elevation 1,244 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).