Vilhena weather in August

In August, Vilhena sees average daytime highs of 31°C and overnight lows near 20°C, with 24 mm of rain across 4.8 wet days and about 11.6 hours of daylight. It is the 1st-warmest and 10th-wettest month of the year here.

Day-to-day highs hold fairly steady near 31°C through the month. The sky is clear or mostly clear about 63% of the time in August, and the air most often feels comfortable.

Daylight stretches from about 11 h 24 min at the start of August to 11 h 42 min by month's end. Set against the rest of the year, August is Vilhena's 2nd-clearest and 2nd-windiest month. For the whole year in context, see Vilhena's year-round climate.

Daytime high
31°
1st warmest
Overnight low
20°
4th coldest
Rainfall
24 mm
4.8 wet days
Daylight
11 h 36 min
6:17 AM – 5:52 PM
Cloud cover
36%
2nd clearest
Wind
8 km/h
2nd windiest
Solar energy
5.4 kWh/m²
Travel score
5.1
out of 10

Temperature in August

Average highAverage lowShaded bands: 10–90% of days

Day-to-day highs hold fairly steady near 31°C through the month.

A typical August day in Vilhena reaches about 31°C in the afternoon and slips back to 20°C overnight — a 12°C spread between the day's warmth and the night's chill. On most days the high lands between 28°C and 34°C. Set against its neighbours, August runs about 2°C warmer than July and on par with September.

15°20°25°30°35°151015202531
Avg high (°C)Avg low (°C)
13119
23119
33119
43119
53119
63119
73119
83119
93119
103119
113119
123119
133120
143120
153220
163220
173220
183220
193220
203220
213220
223220
233220
243220
253220
263220
273220
283220
293220
303220
313221

How August really feels in Vilhena

Once humidity and wind are folded in, August 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

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

Vilhena weather by month

How August compares with the rest of the year at a glance. August is the 1st-warmest and 10th-wettest month here — the current month is highlighted below.

MonthHigh / Low (°C)Rainfall (mm)Wet daysDaylight (hours)Travel score
Jan28° / 21°26729.412.73.2
Feb28° / 21°2742712.43.3
Mar28° / 21°24128.612.13.2
Apr29° / 21°12821.511.74.0
May28° / 20°5712.111.45.5
Jun29° / 19°14311.36.6
Jul30° / 18°102.111.36.4
Aug31° / 20°244.811.65.1
Sep31° / 21°8413.511.94.0
Oct30° / 21°16522.412.33.5
Nov29° / 21°20725.612.63.3
Dec28° / 21°25928.112.73.3

Cloud cover in August

ClearMostly clearPartly cloudyMostly cloudyOvercast

The sky is clear or mostly clear about 63% of the time in August.

Beyond those clear spells, partly cloudy skies cover about 20% of August, with mostly cloudy or overcast conditions the remaining 17%. Skies tend to cloud over as the month goes on.

0%25%50%75%100%151015202531
Clearer (%)Cloudier (%)
18614
28614
38614
48614
58614
68614
78614
88515
98515
108515
118416
128317
138317
148317
158218
168218
178218
188218
198218
208218
218218
228119
238119
248119
258119
267921
277921
287921
297921
307822
317723

Chance of precipitation in August

Any precipitation

Vilhena gets around 24 mm of rain over 4.8 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 16% and peaks near 26% on the wettest days. The odds climb toward the end of the month.

0%10%20%30%40%151015202531
Rain chance (%)
18
28
38
48
59
69
710
810
911
1012
1112
1213
1314
1414
1515
1615
1716
1816
1917
2017
2118
2219
2320
2420
2521
2622
2722
2823
2924
3025
3126

Humidity in August

DryComfortableHumidMuggyOppressiveMiserable

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

By dew point, August lands in the comfortable band about 31% of days. Sticky, muggy-or-worse air turns up on roughly 26% of them.

0%25%50%75%100%151015202531
Dry (%)Comfortable (%)Humid (%)Muggy (%)Oppressive (%)
1214422131
2224322121
3224322121
4224223121
5224123122
6224024132
7223924132
8223824142
9223724142
10233624153
11233524163
12233424173
13233324183
14233223193
15233123203
16223123213
17223023223
18213023243
19212922263
20202823272
21192723292
22182623312
23172524322
24162424332
25152325353
26142225363
27132126373
28122026383
29121927393
30111827404
31101727414

Wind in August

Winds average 8 km/h in August.

Across August, daily wind ranges from about 7 km/h on the calmest days to 8 km/h at its breeziest. It stays fairly steady from day to day.

051015151015202531
Wind speed (km/h)Feels
18calm
28calm
38calm
48calm
58calm
68calm
78calm
88calm
98calm
108calm
118calm
128calm
138calm
148calm
158calm
168calm
178calm
188calm
198calm
208calm
218calm
228calm
238calm
248calm
258calm
267calm
277calm
287calm
297calm
307calm
317calm

Sunrise & sunset in August

DaylightNight

Daylight runs from about 11 h 24 min at the start of August to 11 h 42 min by month's end. The lit band spans sunrise to sunset each day.

Days grow by about 18 minutes over August. Sunrise moves from 6:24 AM to 6:08 AM, and sunset from 5:50 PM to 5:53 PM.

12 AM4 AM8 AM12 PM4 PM8 PM12 AM151015202531
Daylight (h)Sunrise (AM)Sunset (PM)
111.46:245:50
211.46:235:50
311.46:235:50
411.56:235:50
511.56:225:50
611.56:225:50
711.56:225:51
811.56:215:51
911.56:215:51
1011.56:205:51
1111.56:205:51
1211.56:195:51
1311.56:195:52
1411.66:185:52
1511.66:185:52
1611.66:175:52
1711.66:175:52
1811.66:165:52
1911.66:165:52
2011.66:155:52
2111.66:155:52
2211.66:145:52
2311.66:145:52
2411.76:135:53
2511.76:125:53
2611.76:125:53
2711.76:115:53
2811.76:105:53
2911.76:105:53
3011.76:095:53
3111.76:085:53

Solar energy in August

Daily solar energy (kWh/m²)

Average shortwave solar energy reaching the ground each day in August, about 5.4 kWh/m².

For context, solar energy here swings from a low near 4.53 kWh/m² to a high of 5.73 kWh/m² in October across the year — August's 5.4 kWh/m² sits near the top of that range.

0246151015202531
Solar energy (kWh/m²)Level
15.2Bright
25.2Bright
35.3Bright
45.3Bright
55.3Bright
65.3Bright
75.3Bright
85.3Bright
95.3Bright
105.4Bright
115.4Bright
125.4Bright
135.4Bright
145.4Bright
155.4Bright
165.4Bright
175.4Bright
185.4Bright
195.4Bright
205.4Bright
215.5Bright
225.5Bright
235.5Bright
245.5Bright
255.5Bright
265.5Bright
275.5Bright
285.5Bright
295.5Bright
305.5Bright
315.5Bright
Planning a trip in August

Hazard calendar for Vilhena

In seasonPeak

None of Vilhena's seasonal hazards are active in August. The full-year calendar below shows when the rainy season, cyclone risk and dust haze do peak.

Vilhena's monsoon runs October–April, when most of the year's rain falls.

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

Is August a good time to visit Vilhena?

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

5.1
Sightseeing
4th-best month of the year
7.7
Beach & pool
3rd-best month of the year

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

What to pack for Vilhena in August

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

In August, Vilhena sees daytime highs around 31°C and nights near 20°C. Pack light clothes. Worth having: sun protection. About 5 days see rain.

light clothessun protection

UV index in Vilhena in August

LowModerateHighVery highExtreme

Clear-sky midday UV in August 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 Vilhena peaks around January 22 at about 15 (extreme) — sunscreen, a hat and midday shade are essential. It bottoms out near September 15 at about 4 (moderate).

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

025710JanFebMarAprMayJunJulAugSepOctNovDecExtremeVery highModerateExtremeJan 22UV 15Sep 15UV 4
UV index (midday)Level
Jan15Extreme
Feb15Extreme
Mar14Extreme
Apr13Extreme
May10Very high
Jun9Very high
Jul8Very high
Aug10Very high
Sep3Moderate
Oct12Extreme
Nov13Extreme
Dec14Extreme

Air quality in Vilhena in August

GoodModeratePoorUnhealthyVery unhealthy

Average fine-particle pollution (PM2.5) through the year — so you can see where August falls, not just the annual average.

Air quality in Vilhena is worst in September — around 62 µg/m³ PM2.5 (unhealthy), about 7.2× the cleanest month (May, 9 µg/m³).

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

020406080JanFebMarAprMayJunJulAugSepOctNovDecGoodModeratePoorModerateSep 1459 µg/m³May 159 µg/m³
PM2.5 (µg/m³)Level
Jan10Good
Feb10Good
Mar10Good
Apr9Good
May9Good
Jun9Good
Jul11Good
Aug39Poor
Sep62Unhealthy
Oct22Moderate
Nov16Moderate
Dec11Good
Location & terrain

Where is Vilhena?

Vilhena sits at 12.7°S, 60.1°W, 591 m above sea level, in Brazil. The nearest listed city is Colorado do Oeste, 60 km away.

Topography around Vilhena

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

Within 3 km, the terrain around Vilhena has only modest variations in elevation — a maximum elevation change of 75 m around an average of 585 m above sea level; within 16 km, only modest variations in elevation — a maximum elevation change of 226 m; within 80 km, significant variations in elevation — a maximum elevation change of 438 m.

The land around Vilhena is covered by artificial surfaces (47%) and grassland (26%) within 3 km, trees (50%), cropland (24%) and grassland (20%) within 16 km, and trees (76%) within 80 km.

3 km
75 m
16 km
226 m
80 km
438 m
treesshrubsgrasslandcroplandartificial surfacesbare terrain
August weather nearby: Colorado do Oeste 60 km · Cerejeiras 88 km · Comodoro 110 km · Pimenta Bueno 165 km · Espigão dOeste 165 km · Sapezal 169 km · Cacoal 202 km · Rolim de Moura 208 km

Brazil travel facts

Travel advisory
Level 2
Exercise Increased Caution
Power plugs
Type C / N
127 / 220 V · 60 Hz
Prices
≈ 46% of US
price level, 2025
GDP per capita
$10,713
2025
Happiness
6.6 / 10
World Happiness, 2025
Safe drinking water
89%
of population, 2024
Homicide rate
19.3
per 100k, 2023
Road deaths
16
per 100k/yr, 2019
Income group
Upper middle
World Bank
English
Low
EF EPI 482
Religion
Roman Catholic 57%Evangelical 27%none 9%other 4%

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 Vilhena (-12.7406°, -60.1458°, elevation 591 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).