Nueva Rosita weather in September

In September, Nueva Rosita sees average daytime highs of 33°C and overnight lows near 22°C, with 74 mm of rain across 9.3 wet days and about 12.2 hours of daylight. It is the 5th-warmest and 1st-wettest month of the year here.

Highs ease over the month, from about 35°C in the first days to 32°C by the end. The sky is clear or mostly clear about 52% of the time in September, and the air most often feels muggy.

Daylight stretches from about 12 h 36 min at the start of September to 11 h 48 min by month's end. Set against the rest of the year, September is Nueva Rosita's 9th-clearest and 9th-windiest month. For the whole year in context, see Nueva Rosita's year-round climate.

Daytime high
33°
5th warmest
Overnight low
22°
9th coldest
Rainfall
74 mm
9.3 wet days
Daylight
12 h 12 min
6:34 AM – 6:44 PM
Cloud cover
45%
9th clearest
Wind
10 km/h
9th windiest
Solar energy
5.22 kWh/m²
Travel score
3.7
out of 10

Nueva Rosita is municipal seat of San Juan de Sabinas, State of Coahuila, Mexico.

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 35°C in the first days to 32°C by the end.

A typical September day in Nueva Rosita reaches about 33°C in the afternoon and slips back to 22°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 29°C and 37°C. Set against its neighbours, September runs about 4°C cooler than August and about 4°C warmer than October.

15°20°25°30°35°40°151015202530
Avg high (°C)Avg low (°C)
13524
23524
33524
43424
53424
63424
73424
83423
93423
103323
113323
123323
133323
143323
153323
163323
173322
183322
193322
203322
213222
223222
233222
243221
253221
263221
273221
283221
293221
303220

How September really feels in Nueva Rosita

Once humidity and wind are folded in, September averages 29 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
29
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.

Nueva Rosita weather by month

How September compares with the rest of the year at a glance. September is the 5th-warmest and 1st-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 122.610.47.7
Feb23° / 10°152.6118.2
Mar27° / 14°233.411.87.4
Apr32° / 18°263.912.65.0
May35° / 22°558.113.42.9
Jun37° / 25°426.513.71.9
Jul37° / 25°526.913.61.8
Aug37° / 25°505.7131.9
Sep33° / 22°749.312.23.7
Oct29° / 18°425.111.36.3
Nov24° / 12°193.310.68.2
Dec20° / 152.710.37.7

Cloud cover in September

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 52% of the time in September.

Beyond those clear spells, partly cloudy skies cover about 18% of September, with mostly cloudy or overcast conditions the remaining 30%. Skies tend to open up as the month goes on.

0%25%50%75%100%151015202530
Clearer (%)Cloudier (%)
16931
26832
36832
46832
56733
66733
76634
86733
96733
106733
116733
126733
136733
146733
156832
166931
176931
186931
197030
207030
217129
227129
237228
247327
257426
267525
277525
287624
297624
307723

Chance of precipitation in September

Any precipitation

Nueva Rosita gets around 74 mm of rain over 9.3 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 30% and peaks near 34% on the wettest days. The odds ease toward the end of the month.

0%10%20%30%40%151015202530
Rain chance (%)
130
230
331
432
533
633
734
834
934
1034
1134
1234
1333
1433
1533
1632
1732
1831
1930
2030
2129
2228
2327
2425
2525
2624
2723
2822
2922
3021

Humidity in September

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, September lands in the muggy band about 37% of days. Sticky, muggy-or-worse air turns up on roughly 64% of them.

0%25%50%75%100%151015202530
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)Miserable (%)
1351943301
2351942311
3351941320
4451841320
5451840330
6451839340
7451839340
8541839350
9541838350
10541838350
11551838340
12551838340
13551838330
14651838320
15661938310
16671938300
17771938290
18782037280
19892037260
209102036250
219102136240
2210112135220
2311122134210
2412132134200
2513132133190
2614142233180
2715142232170
2816142231160
2917142231160
3018142230150

Wind in September

Winds average 10 km/h in September.

Across September, daily wind ranges from about 10 km/h on the calmest days to 11 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202530
Wind speed (km/h)Feels
111calm
211calm
310calm
410calm
510calm
610calm
710calm
810calm
910calm
1010calm
1110calm
1210calm
1310calm
1410calm
1510calm
1610calm
1710calm
1810calm
1910calm
2010calm
2110calm
2210calm
2310calm
2410calm
2510calm
2610calm
2710calm
2810calm
2910calm
3010calm

Sunrise & sunset in September

DaylightNight

Daylight runs from about 12 h 36 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 48 minutes over September. Sunrise moves from 6:27 AM to 6:41 AM, and sunset from 7:02 PM to 6:27 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202530
Daylight (h)Sunrise (AM)Sunset (PM)
112.66:277:02
212.66:287:01
312.56:287:00
412.56:296:59
512.56:296:57
612.46:296:56
712.46:306:55
812.46:306:54
912.46:316:53
1012.36:316:51
1112.36:326:50
1212.36:326:49
1312.26:336:48
1412.26:336:47
1512.26:346:45
1612.26:346:44
1712.16:356:43
1812.16:356:42
1912.16:366:40
2012.06:366:39
2112.06:376:38
2212.06:376:37
2312.06:386:36
2411.96:386:34
2511.96:396:33
2611.96:396:32
2711.96:406:31
2811.86:406:30
2911.86:416:28
3011.86:416:27

Solar energy in September

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in September, about 5.22 kWh/m².

For context, solar energy here swings from a low near 3.36 kWh/m² to a high of 6.72 kWh/m² in June across the year — September's 5.22 kWh/m² falls in the middle.

0246151015202530
Solar energy (kWh/m²)Level
15.7Bright
25.7Bright
35.6Bright
45.5Bright
55.5Bright
65.5Bright
75.4Bright
85.4Bright
95.3Bright
105.3Bright
115.3Bright
125.3Bright
135.2Bright
145.2Bright
155.2Bright
165.2Bright
175.2Bright
185.2Bright
195.2Bright
205.2Bright
215.2Bright
225.2Bright
235.1Bright
245.1Bright
255.1Bright
265.1Bright
275.1Bright
285.1Bright
295.1Bright
305.0Bright
Planning a trip in September

Is September a good time to visit Nueva Rosita?

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

3.7
Sightseeing
8th-best month of the year
6.5
Beach & pool
5th-best month of the year

September is a weaker month for outdoor sightseeing in Nueva Rosita. The water and warmth also suit a beach or pool day.

What to pack for Nueva Rosita in September

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

In September, Nueva Rosita sees daytime highs around 33°C and nights near 22°C. Pack light clothes. Worth having: rain gear and sun protection. About 9 days see rain.

light clothesrain gearsun protection

UV index in Nueva Rosita in September

LowModerateHighVery highExtreme

Clear-sky midday UV in September peaks around 10 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Nueva Rosita peaks around July 17 at about 12 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 18 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecHighVery highExtremeVery highHighModerateJul 17UV 12Dec 18UV 4
UV index (midday)Level
Jan5Moderate
Feb7High
Mar8Very high
Apr10Extreme
May11Extreme
Jun11Extreme
Jul12Extreme
Aug11Extreme
Sep10Very high
Oct7Very high
Nov5High
Dec4Moderate

Air quality in Nueva Rosita 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 Nueva Rosita is worst in July — around 17 µg/m³ PM2.5 (moderate), about 3.0× the cleanest month (January, 6 µg/m³).

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

01020JanFebMarAprMayJunJulAugSepOctNovDecGoodModerateGoodJul 1617 µg/m³Jan 196 µg/m³
PM2.5 (µg/m³)Level
Jan6Good
Feb6Good
Mar7Good
Apr9Good
May14Moderate
Jun14Moderate
Jul17Moderate
Aug14Moderate
Sep12Good
Oct8Good
Nov7Good
Dec7Good
Location & terrain

Where is Nueva Rosita?

Nueva Rosita sits at 27.9°N, 101.2°W, 379 m above sea level, in Mexico. The nearest listed city is Sabinas, 13 km away.

Topography around Nueva Rosita

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

Within 3 km, the terrain around Nueva Rosita has only modest variations in elevation — a maximum elevation change of 79 m around an average of 379 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 159 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,828 m.

The land around Nueva Rosita is covered by shrubs (42%), artificial surfaces (27%) and bare terrain (20%) within 3 km, shrubs (86%) within 16 km, and shrubs (91%) within 80 km.

3 km
79 m
16 km
159 m
80 km
1,828 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
September weather nearby: Sabinas 13 km · Palaú 21 km · Ciudad Melchor Múzquiz 30 km · Allende 58 km · Nava 70 km · San Buenaventura 103 km · Piedras Negras 109 km · Eagle Pass 111 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 Nueva Rosita (27.9371°, -101.2175°, elevation 379 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).