Río Grande weather in August

In August, Río Grande sees average daytime highs of 27°C and overnight lows near 16°C, with 70 mm of rain across 10.9 wet days and about 12.8 hours of daylight. It is the 5th-warmest and 3rd-wettest month of the year here.

Highs ease over the month, from about 27°C in the first days to 26°C by the end. The sky is clear or mostly clear about 41% of the time in August, and the air most often feels dry.

Daylight stretches from about 13 h 06 min at the start of August to 12 h 30 min by month's end. Set against the rest of the year, August is Río Grande's 10th-clearest and 8th-windiest month. For the whole year in context, see Río Grande's year-round climate.

Daytime high
27°
5th warmest
Overnight low
16°
10th coldest
Rainfall
70 mm
10.9 wet days
Daylight
12 h 48 min
6:31 AM – 7:21 PM
Cloud cover
50%
10th clearest
Wind
11 km/h
8th windiest
Solar energy
6.73 kWh/m²
Travel score
6.5
out of 10

Río Grande is Mexican town in the state of Zacatecas.

Founded
1562

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

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Highs ease over the month, from about 27°C in the first days to 26°C by the end.

A typical August day in Río Grande reaches about 27°C in the afternoon and slips back to 16°C overnight — a 11°C spread between the day's warmth and the night's chill. On most days the high lands between 24°C and 30°C. Set against its neighbours, August runs on par with July and about 2°C warmer than September.

10°15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
12716
22716
32716
42716
52716
62716
72716
82716
92716
102716
112716
122716
132716
142716
152716
162716
172716
182716
192716
202715
212715
222615
232615
242615
252615
262615
272615
282615
292615
302615
312615

Río Grande weather by month

How August compares with the rest of the year at a glance. August is the 5th-warmest and 3rd-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan20° / 132.410.77.8
Feb23° / 111.611.28.5
Mar25° / 81.411.88.5
Apr28° / 12°71.612.57.4
May30° / 15°153.213.16.2
Jun29° / 16°568.513.46.0
Jul27° / 16°7811.213.36.4
Aug27° / 16°7010.912.86.5
Sep25° / 15°8611.812.16.6
Oct25° / 12°284.811.48.1
Nov23° / 112.210.88.5
Dec21° / 81.810.68.0

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 41% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 23% of August, with mostly cloudy or overcast conditions the remaining 36%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
16931
26931
36931
47030
57030
66931
76931
86931
96832
106832
116832
126832
136733
146634
156634
166634
176535
186436
196436
206337
216238
226238
236139
246040
255941
265842
275743
285644
295446
305446
315347

Chance of precipitation in August

Any precipitation

Río Grande gets around 70 mm of rain over 10.9 wet days in August. The line is the day-by-day chance of measurable precipitation.

Day to day, the chance of measurable rain averages around 36% and peaks near 44% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%50%151015202531
Rain chance (%)
133
233
333
433
533
633
733
834
934
1034
1134
1234
1334
1434
1534
1634
1734
1835
1935
2035
2136
2236
2337
2438
2539
2640
2741
2842
2943
3043
3144

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the dry band about 63% of days. It rarely turns muggy — the humid and sticky bands barely register.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)
170282
270282
370282
469292
569292
668293
767303
867303
967303
1066313
1166313
1265323
1365323
1465323
1565323
1664333
1764333
1864333
1964333
2063343
2163343
2262353
2361363
2460373
2559383
2658393
2756413
2855423
2954433
3052453
3150464

Wind in August

Winds average 11 km/h in August.

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

051015151015202531
Wind speed (km/h)Feels
111calm
211calm
311calm
411calm
511calm
611calm
711calm
811calm
911calm
1011calm
1111calm
1211calm
1311calm
1411calm
1511calm
1611calm
1711calm
1811calm
1911calm
2011calm
2111calm
2211calm
2311calm
2411calm
2511calm
2611calm
2711calm
2811calm
2911calm
3011calm
3111calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 13 h 06 min at the start of August to 12 h 30 min by month's end. The lit band spans sunrise to sunset each day.

Days shrink by about 36 minutes over August. Sunrise moves from 6:25 AM to 6:37 AM, and sunset from 7:32 PM to 7:07 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
113.16:257:32
213.16:257:31
313.16:267:30
413.16:267:30
513.06:277:29
613.06:277:29
713.06:277:28
813.06:287:27
913.06:287:27
1013.06:297:26
1112.96:297:25
1212.96:307:24
1312.96:307:24
1412.96:307:23
1512.96:317:22
1612.86:317:21
1712.86:327:20
1812.86:327:20
1912.86:327:19
2012.86:337:18
2112.76:337:17
2212.76:347:16
2312.76:347:15
2412.76:347:14
2512.66:357:13
2612.66:357:12
2712.66:357:11
2812.66:367:10
2912.66:367:09
3012.56:377:08
3112.56:377:07

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 6.73 kWh/m².

For context, solar energy here swings from a low near 4.54 kWh/m² to a high of 7.81 kWh/m² in May across the year — August's 6.73 kWh/m² falls in the middle.

02468151015202531
Solar energy (kWh/m²)Level
17.1Intense
27.0Intense
37.0Intense
47.0Intense
57.0Intense
67.0Intense
77.0Intense
87.0Intense
96.9Intense
106.9Intense
116.9Intense
126.9Intense
136.8Intense
146.8Intense
156.8Intense
166.8Intense
176.7Intense
186.7Intense
196.7Intense
206.6Intense
216.6Intense
226.5Intense
236.5Intense
246.4Intense
256.4Intense
266.3Intense
276.3Intense
286.3Intense
296.2Intense
306.2Intense
316.1Intense
Planning a trip in August

Is August a good time to visit Río Grande?

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

6.5
Sightseeing
9th-best month of the year
6.5
Beach & pool
7th-best month of the year

August is a reasonable time to visit Río Grande for sightseeing. The water and warmth also suit a beach or pool day.

What to pack for Río Grande in August

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

In August, Río Grande sees daytime highs around 27°C and nights near 16°C. Pack sun protection. Worth having: light clothes and rain gear. About 11 days see rain.

sun protectionlight clothesrain gear

UV index in Río Grande in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August peaks around 13 (very high — sun protection essential). The full-year curve, shaded by WHO exposure level, is below.

Under clear skies, the midday UV index in Río Grande peaks around May 21 at about 14 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near December 19 at about 6 (high).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecVery highExtremeVery highHighMay 21UV 14Dec 19UV 6
UV index (midday)Level
Jan7High
Feb10Very high
Mar11Extreme
Apr13Extreme
May14Extreme
Jun14Extreme
Jul13Extreme
Aug13Extreme
Sep12Extreme
Oct10Very high
Nov7Very high
Dec6High
Location & terrain

Where is Río Grande?

Río Grande sits at 23.8°N, 103.0°W, 1,859 m above sea level, in Mexico. The nearest listed city is Juan Aldama, 63 km away.

Topography around Río Grande

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

Within 3 km, the terrain around Río Grande has only modest variations in elevation — a maximum elevation change of 96 m around an average of 1,878 m above sea level; within 16 km, significant variations in elevation — a maximum elevation change of 396 m; within 80 km, very significant variations in elevation — a maximum elevation change of 1,533 m.

The land around Río Grande is covered by shrubs (40%), artificial surfaces (30%) and cropland (20%) within 3 km, shrubs (77%) within 16 km, and shrubs (64%) and cropland (30%) within 80 km.

3 km
96 m
16 km
396 m
80 km
1,533 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
August weather nearby: Juan Aldama 63 km · Sombrerete 66 km · Fresnillo 74 km · Vicente Guerrero 97 km · Víctor Rosales 103 km · Zacatecas 126 km · Guadalupe Victoria 130 km · Jerez de García Salinas 131 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 Río Grande (23.8273°, -103.0341°, elevation 1,859 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. Topography is sampled from the Copernicus DEM GLO-90 elevation model (© ESA/Airbus) and ESA WorldCover 2021 land cover (CC BY 4.0).