Tamuín weather in September

In September, Tamuín sees average daytime highs of 32°C and overnight lows near 24°C, with 196 mm of rain across 20.1 wet days and about 12.1 hours of daylight. It is the 6th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 33°C in the first days to 32°C by the end. The sky is clear or mostly clear about 29% of the time in September, and the air most often feels oppressive.

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 Tamuín's 12th-clearest and 11th-windiest month. For the whole year in context, see Tamuín's year-round climate.

Daytime high
32°
6th warmest
Overnight low
24°
8th coldest
Rainfall
196 mm
20.1 wet days
Daylight
12 h 06 min
6:26 AM – 6:33 PM
Cloud cover
62%
12th clearest
Wind
6 km/h
11th windiest
Solar energy
5 kWh/m²
Travel score
2.9
out of 10

Tamuín is municipal seat of Tamuín, State of San Luis Potosí, Mexico.

Density
7/km²
people per km²
Founded
1741

Air quality: WHO Ambient Air Quality Database. Density & description: Wikidata (CC0), GeoNames.

Temperature in September

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 33°C in the first days to 32°C by the end.

A typical September day in Tamuín reaches about 32°C in the afternoon and slips back to 24°C overnight — a 9°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 2°C cooler than August and about 2°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
123324
133224
143224
153224
163224
173224
183224
193224
203224
213223
223223
233223
243223
253223
263223
273223
283223
293223
303123

How September really feels in Tamuín

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
5 feel dangerously hot (≥ 39°C)
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.

Tamuín 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° / 15°346.810.87.4
Feb27° / 17°265.411.27.0
Mar30° / 19°366.811.85.3
Apr33° / 22°467.212.53.6
May35° / 24°7411.7132.5
Jun35° / 25°15818.713.32.2
Jul34° / 24°1641913.22.6
Aug34° / 24°1361812.82.6
Sep32° / 24°19620.112.12.9
Oct30° / 21°11612.311.54.7
Nov27° / 18°478.210.96.7
Dec25° / 16°255.610.77.5

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 29% of the time in September, the cloudiest month of the year.

Beyond those clear spells, partly cloudy skies cover about 19% of September, with mostly cloudy or overcast conditions the remaining 52%.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
14951
24753
34753
44753
54753
64654
74654
84654
94654
104753
114753
124852
134753
144852
154852
164852
174852
184951
194951
204951
214951
224951
234951
244951
255050
264951
274951
285149
295149
305149

Chance of precipitation in September

Any precipitation

Tamuín gets around 196 mm of rain over 20.1 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 66% and peaks near 73% on the wettest days. The odds ease toward the end of the month.

0%20%40%60%80%151015202530
Rain chance (%)
168
269
370
470
571
672
772
873
973
1073
1172
1272
1371
1471
1570
1669
1769
1868
1966
2065
2164
2262
2360
2459
2558
2656
2755
2854
2953
3053

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 54% of days. Sticky, muggy-or-worse air turns up on roughly 98% of them.

0%25%50%75%100%151015202530
Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
10015742
20015742
30015742
40025642
50025642
60025642
70025642
80025642
90025642
100025642
110035542
120035542
130035542
140035542
150045442
160145441
170155341
180165340
190175339
200185338
210295237
2212105235
2312115234
2413125232
2513145230
2613155229
2713165327
2824175225
2924185224
3024195322

Wind in September

Winds average 6 km/h in September.

Across September, daily wind ranges from about 6 km/h on the calmest days to 6 km/h at its breeziest. It stays fairly steady from day to day.

0246810151015202530
Wind speed (km/h)Feels
16calm
26calm
36calm
46calm
56calm
66calm
76calm
86calm
96calm
106calm
116calm
126calm
136calm
146calm
156calm
166calm
176calm
186calm
196calm
206calm
216calm
226calm
236calm
246calm
256calm
266calm
276calm
286calm
296calm
306calm

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 6:21 AM to 6:30 AM, and sunset from 6:48 PM to 6:19 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.46:216:48
212.46:226:47
312.46:226:46
412.46:226:45
512.46:236:44
612.36:236:43
712.36:236:42
812.36:236:41
912.36:246:40
1012.36:246:39
1112.26:246:38
1212.26:256:37
1312.26:256:36
1412.26:256:35
1512.16:256:34
1612.16:266:33
1712.16:266:32
1812.16:266:31
1912.16:276:30
2012.06:276:29
2112.06:276:28
2212.06:276:27
2312.06:286:26
2412.06:286:25
2511.96:286:24
2611.96:296:23
2711.96:296:22
2811.96:296:21
2911.86:296:20
3011.86:306:19

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5 kWh/m².

For context, solar energy here swings from a low near 3.39 kWh/m² to a high of 5.92 kWh/m² in August across the year — September's 5 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.4Bright
25.4Bright
35.3Bright
45.3Bright
55.3Bright
65.2Bright
75.2Bright
85.2Bright
95.2Bright
105.1Bright
115.1Bright
125.1Bright
135.1Bright
145.0Bright
155.0Bright
165.0Bright
175.0Bright
185.0Bright
195.0Bright
205.0Bright
214.9Bright
224.9Bright
234.9Bright
244.9Bright
254.9Bright
264.8Bright
274.8Bright
284.8Bright
294.8Bright
304.8Bright
Planning a trip in September

Hazard calendar for Tamuín

In seasonPeak

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

Tamuín's monsoon runs June–October, 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 Tamuín?

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

2.9
Sightseeing
8th-best month of the year
4.9
Beach & pool
11th-best month of the year

September is a weaker month for outdoor sightseeing in Tamuín.

What to pack for Tamuín in September

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

In September, Tamuín sees daytime highs around 32°C and nights near 24°C. Pack light clothes and rain gear. Worth having: sun protection. About 20 days see rain.

light clothesrain gearsun protection

UV index in Tamuín in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 9 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Tamuín peaks around June 18 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 20 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeExtremeVery highHighJun 18UV 12Dec 20UV 6
UV index (midday)Level
Jan6High
Feb8Very high
Mar10Very high
Apr12Extreme
May9Very high
Jun12Extreme
Jul10Extreme
Aug12Extreme
Sep9Very high
Oct9Very high
Nov6High
Dec6High

Air quality in Tamuín 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 Tamuín is worst in May — around 31 µg/m³ PM2.5 (moderate), about 1.7× the cleanest month (October, 18 µg/m³).

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

010203040JanFebMarAprMayJunJulAugSepOctNovDecModerateMay 1530 µg/m³Oct 2118 µg/m³
PM2.5 (µg/m³)Level
Jan21Moderate
Feb22Moderate
Mar23Moderate
Apr27Moderate
May31Moderate
Jun25Moderate
Jul24Moderate
Aug20Moderate
Sep19Moderate
Oct18Moderate
Nov18Moderate
Dec22Moderate
Location & terrain

Where is Tamuín?

Tamuín sits at 22.0°N, 98.8°W, 27 m above sea level, in Mexico. The nearest listed city is Ciudad Valles, 24 km away.

Topography around Tamuín

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

Within 3 km, the terrain around Tamuín has only modest variations in elevation — a maximum elevation change of 20 m around an average of 23 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 533 m; within 80 km, extreme variations in elevation — a maximum elevation change of 2,890 m.

The land around Tamuín is covered by cropland (41%) and grassland (34%) within 3 km, grassland (48%) and trees (28%) within 16 km, and trees (42%) and grassland (35%) within 80 km.

3 km
20 m
16 km
533 m
80 km
2,890 m
treesshrubsgrasslandcroplandartificial surfaceswater
September weather nearby: Ciudad Valles 24 km · Ébano 48 km · Pánuco 62 km · Tamazunchale 83 km · Ciudad Mante 84 km · Cárdenas 89 km · Tantoyuca 93 km · Altamira 97 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 Tamuín (22.0055°, -98.7797°, elevation 27 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).