Sayula weather in September

In September, Sayula sees average daytime highs of 25°C and overnight lows near 15°C, with 135 mm of rain across 20 wet days and about 12.1 hours of daylight. It is the 8th-warmest and 3rd-wettest month of the year here.

Day-to-day highs hold fairly steady near 25°C through the month. The sky is clear or mostly clear about 8% 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 Sayula's 12th-clearest and 9th-windiest month. For the whole year in context, see Sayula's year-round climate.

Daytime high
25°
8th warmest
Overnight low
15°
11th coldest
Rainfall
135 mm
20 wet days
Daylight
12 h 06 min
6:45 AM – 6:52 PM
Cloud cover
77%
12th clearest
Wind
5 km/h
9th windiest
Solar energy
4.89 kWh/m²
Travel score
5.0
out of 10

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

Density
3,152/km²
people per km²

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 25°C through the month.

A typical September day in Sayula reaches about 25°C in the afternoon and slips back to 15°C overnight — a 10°C spread between the day's warmth and the night's chill. On most days the high lands between 23°C and 27°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)
12516
22516
32516
42516
52516
62516
72516
82516
92516
102515
112515
122515
132515
142515
152515
162515
172515
182515
192515
202515
212515
222515
232515
242515
252515
262615
272615
282615
292615
302615

Sayula weather by month

How September compares with the rest of the year at a glance. September is the 8th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan23° / 272.710.98.4
Feb25° / 182.511.38.4
Mar27° / 10°142.111.98.0
Apr30° / 12°7212.46.5
May30° / 14°346.712.95.5
Jun28° / 16°13018.313.24.8
Jul26° / 15°16223.713.14.5
Aug26° / 15°14523.512.74.6
Sep25° / 15°1352012.15.0
Oct26° / 14°6510.711.56.6
Nov25° / 11°24411.18.2
Dec24° / 122.110.88.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 8% 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 78%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
11684
21783
31783
41783
51783
61783
71981
81981
92080
102080
112179
122179
132278
142278
152377
162377
172476
182377
192377
202476
212575
222575
232575
242575
252674
262674
272872
282872
292971
303070

Chance of precipitation in September

Any precipitation

Sayula gets around 135 mm of rain over 20 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 66% and peaks near 76% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
176
276
375
474
574
673
772
872
971
1070
1169
1269
1368
1467
1567
1666
1765
1865
1964
2063
2163
2262
2361
2459
2558
2657
2755
2854
2953
3052

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 54% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)
113663
213663
313663
413663
513663
613762
723860
823959
923959
1024058
1124157
1224157
1324256
1434255
1534354
1634354
1734354
1834453
1944452
2044452
2154451
2254451
2364450
2474449
2584448
2694447
27104446
28114544
29124543
30134642

Wind in September

Winds average 5 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
155calm
165calm
175calm
185calm
195calm
205calm
215calm
225calm
235calm
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 6:42 AM to 6:49 AM, and sunset from 7:06 PM to 6:39 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:427:06
212.46:427:05
312.46:437:04
412.36:437:03
512.36:437:02
612.36:437:02
712.36:437:01
812.36:447:00
912.26:446:59
1012.26:446:58
1112.26:446:57
1212.26:456:56
1312.26:456:55
1412.26:456:54
1512.16:456:53
1612.16:456:52
1712.16:466:51
1812.16:466:50
1912.16:466:49
2012.06:466:48
2112.06:466:47
2212.06:476:46
2312.06:476:45
2412.06:476:44
2511.96:476:44
2611.96:486:43
2711.96:486:42
2811.96:486:41
2911.96:486:40
3011.86:496:39

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 4.89 kWh/m².

For context, solar energy here swings from a low near 4.75 kWh/m² to a high of 7.5 kWh/m² in April across the year — September's 4.89 kWh/m² sits near the bottom.

024151015202530
Solar energy (kWh/m²)Level
14.9Bright
24.9Bright
34.9Bright
44.9Bright
54.9Bright
64.9Bright
74.9Bright
84.9Bright
94.9Bright
104.9Bright
114.9Bright
124.9Bright
134.9Bright
144.9Bright
154.9Bright
164.9Bright
174.9Bright
184.9Bright
194.9Bright
204.9Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.9Bright
275.0Bright
285.0Bright
295.0Bright
305.0Bright
Planning a trip in September

Hazard calendar for Sayula

In seasonPeak

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

Sayula's rainy season runs June–September, when most of the year's rain falls.

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

Is September a good time to visit Sayula?

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

5.0
Sightseeing
9th-best month of the year
4.7
Beach & pool
10th-best month of the year

September is a reasonable time to visit Sayula for sightseeing.

What to pack for Sayula in September

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

In September, Sayula sees daytime highs around 25°C and nights near 15°C. Pack rain gear. Worth having: light clothes and sun protection. About 20 days see rain.

rain gearlight clothessun protection

UV index in Sayula 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 Sayula peaks around May 12 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 15 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 highExtremeVery highMay 12UV 14Dec 15UV 7
UV index (midday)Level
Jan8Very high
Feb11Extreme
Mar13Extreme
Apr14Extreme
May14Extreme
Jun12Extreme
Jul12Extreme
Aug12Extreme
Sep12Extreme
Oct10Very high
Nov8Very high
Dec7High

Air quality in Sayula 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 Sayula is worst in May — around 44 µg/m³ PM2.5 (poor), about 3.2× the cleanest month (July, 14 µg/m³).

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

0204060JanFebMarAprMayJunJulAugSepOctNovDecModeratePoorModerateMay 1342 µg/m³Jul 2114 µg/m³
PM2.5 (µg/m³)Level
Jan20Moderate
Feb18Moderate
Mar20Moderate
Apr33Moderate
May44Poor
Jun17Moderate
Jul14Moderate
Aug15Moderate
Sep17Moderate
Oct17Moderate
Nov18Moderate
Dec21Moderate
Location & terrain

Where is Sayula?

Sayula sits at 19.9°N, 103.6°W, 1,351 m above sea level, in Mexico. The nearest listed city is Ciudad Guzmán, 25 km away.

Topography around Sayula

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

Within 3 km, the terrain around Sayula has significant variations in elevation — a maximum elevation change of 504 m around an average of 1,403 m above sea level; within 16 km, very significant variations in elevation — a maximum elevation change of 1,349 m; within 80 km, extreme variations in elevation — a maximum elevation change of 3,910 m.

The land around Sayula is covered by cropland (26%), grassland (23%) and trees (21%) within 3 km, trees (42%) and grassland (25%) within 16 km, and trees (53%) within 80 km.

3 km
504 m
16 km
1,349 m
80 km
3,910 m
treesshrubsgrasslandcroplandartificial surfacesbare terrainwater
September weather nearby: Ciudad Guzmán 25 km · Zapotiltic 34 km · Zacoalco de Torres 38 km · Tamazula de Gordiano 43 km · Tuxpan 43 km · Jocotepec 48 km · Cocula 58 km · Chapala 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 Sayula (19.8837°, -103.6007°, elevation 1,351 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).